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Beyond amplitude:Phase integration in bird vocalization recognition with MHAResNet 认领 引用 被引量：3
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作者 Jiangjian Xie Zhulin Hao +2 位作者 Chunhe Hu Changchun Zhang Junguo Zhang 《Avian Research》 SCIE CAS CSCD 2025年第1期119-128,共10页
Bird vocalizations are pivotal for ecological monitoring,providing insights into biodiversity and ecosystem health.Traditional recognition methods often neglect phase information,resulting in incomplete feature repres... Bird vocalizations are pivotal for ecological monitoring,providing insights into biodiversity and ecosystem health.Traditional recognition methods often neglect phase information,resulting in incomplete feature representation.In this paper,we introduce a novel approach to bird vocalization recognition(BVR)that integrates both amplitude and phase information,leading to enhanced species identification.We propose MHARes Net,a deep learning(DL)model that employs residual blocks and a multi-head attention mechanism to capture salient features from logarithmic power(POW),Instantaneous Frequency(IF),and Group Delay(GD)extracted from bird vocalizations.Experiments on three bird vocalization datasets demonstrate our method's superior performance,achieving accuracy rates of 94%,98.9%,and 87.1%respectively.These results indicate that our approach provides a more effective representation of bird vocalizations,outperforming existing methods.This integration of phase information in BVR is innovative and significantly advances the field of automatic bird monitoring technology,offering valuable tools for ecological research and conservation efforts. 展开更多
关键词 Bird vocalization recognition Feature fusion Phase information Residual network
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Vocal characteristics of distress and reproductive vocalizations in North American wapiti 认领 引用 被引量：1
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作者 Cora Anne Romanow Tobias Riede Susan Lingle 《Current Zoology》 SCIE CAS CSCD 2025年第5期545-559,共15页
Variation in the vocal behavior of nonhuman vertebrates includes graded transitions and more dramatic changes.Wapiti males produce a reproductive bugle that has a fundamental frequency that surpasses 2,000 Hz with evi... Variation in the vocal behavior of nonhuman vertebrates includes graded transitions and more dramatic changes.Wapiti males produce a reproductive bugle that has a fundamental frequency that surpasses 2,000 Hz with evidence of biphonation and other nonlinear phenomena.Here,we analyze the acoustic structure of captive wapiti vocalizations to compare the male bugle with 3 categories of distress vocalizations:neonate distress(capture)calls,calf isolation calls,and adult female isolation calls.These 4 high-arousal call categories serve a common general function in recruiting conspecifics but occur in different behavioral contexts(capture,isolation,reproduction).Our goal was to distinguish characteristics that vary in graded steps that may correspond to an animal’s age or size from characteristics that are unique to the bugle.Characteristics of the high and loud fundamental(G0)varied in an age/size-graded manner with a decrease in minimum G0,an increase in the maximum and range of G0,with no evidence of sex differences.The nonlinear phenomena of deterministic chaos,biphonation,and frequency jumps were present in all 4 call categories and became more common from the distress vocalizations of neonates to calves to adult females to the male bugle.Two temporal characteristics sharply distinguished the bugle from the 3 categories of distress vocalizations:these included a prolonged call duration and a maximum G0 that occurred much later in the call for the bugle than for distress vocalizations.Our results suggest that distress vocalizations of different age groups and the reproductive bugle of wapiti share a high G0,with age/size-graded changes in G0 and nonlinear phenomena,but differ sharply in temporal characteristics. 展开更多
关键词 age and sex differences bioacoustics Cervus distress vocalizations elk fundamental frequency nonlinear phenomena ontogeny production reproduction
The vocalization of the red junglefowl is a signal of body size and individual health 认领 引用 被引量：2
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作者 郝佩佩 赵凯 +3 位作者 黄希 饶晓东 梁伟 张雁云 《Current Zoology》 SCIE CAS CSCD 2023年第4期393-400,共8页
Bird songs are considered a sexually selected trait that can reflect the individual health of males as well as the vitality of potential mates and their competitors.Vocalization features should,therefore,be related to... Bird songs are considered a sexually selected trait that can reflect the individual health of males as well as the vitality of potential mates and their competitors.Vocalization features should,therefore,be related to parasite load and body condition.Here,we performed a thorough acoustic analysis of the display calls of 9-month-old sub-adults and 18-month-old adults of pasture-raised red junglefowls Gallus gallus.We investigated whether the calls of pasture-raised red junglefowls can indicate body size and body condition,in addition to the influence of parasitic infection intensity on the expression of sexual traits.We found that frequency-related syllable parameters were significantly positively correlated with wing length in adults,whereas body weight was independent of both the frequency and temporal parameters of calls.In addition,we correlated parasitic load with the expression of sexually selected traits and discovered a positive association between the intensity of parasite infection and wing length in sub-adults,independent of vocal parameters.Overall,the results suggest that the vocalization of red junglefowls may convey reliable body size information,which will facilitate further studies of different vocal parameters in the transmission of bird vocalizations. 展开更多
关键词 blood parasite male quality morphology red junglefowl Gallus gallus vocalization
High frequency components in avian vocalizations 认领 引用
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作者 李建强 张雁云 张正旺 《Chinese Birds》 2011年第3期125-131,共7页
Ultrasonic communication in vertebrates is attracting increasing research interest.To determine if ultrasonic vocalization is common in birds,we recorded their vocalizations with ultrasound detectors in the Dongzhai N... Ultrasonic communication in vertebrates is attracting increasing research interest.To determine if ultrasonic vocalization is common in birds,we recorded their vocalizations with ultrasound detectors in the Dongzhai National Nature Reserve of Henan Province,China.We found varying degrees of high frequency components in the vocalizations of 14 species and in several of these species,the frequency of harmonics was up to the range of ultrasound.We suggest that more studies are required to determine whether the high frequency components in avian vocalizations have functions and what these functions are.In addition,the ability of birds to hear sounds in the high frequency range also requires re-examination. 展开更多
关键词 avian vocalization high frequency components ultrasound functions
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Medial Preoptic Area Modulates Courtship Ultrasonic Vocalization in Adult Male Mice 认领 引用 被引量：3
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作者 Shu-Chen Gao Yi-Chao Wei +1 位作者 Shao-Ran Wang Xiao-Hong Xu 《Neuroscience Bulletin》 SCIE CAS CSCD 2019年第4期697-708,共12页
Adult male mice emit highly complex ultrasonic vocalizations(USVs)in response to female conspecifics.Such US Vs,thought to facilitate courtship behaviors,are routinely measured as a behavioral index in mouse models of... Adult male mice emit highly complex ultrasonic vocalizations(USVs)in response to female conspecifics.Such US Vs,thought to facilitate courtship behaviors,are routinely measured as a behavioral index in mouse models of neurodevelopmental and psychiatric disorders such as autism.While the regulation of US Vs by genetic factors has been extensively characterized,the neural mechanisms that control USV production remain largely unknown.Here,we report that optogenetic activation of the medial preoptic area(mPOA)elicited the production of USVs that were acoustically similar to courtship US Vs in adult mice.Moreover,mPOA vesicular GABA transporter-positive(Vgat +)neurons were more effective at driving USV production than vesicular glutamate transporter 2-positive neurons.Furthermore,ablation of mPOA Vgat+ neurons resulted in altered spectral features and syllable usage of USVs in targeted males.Together,these results demonstrate that the mPOA plays a crucial role in modulating courtship USVs and this may serve as an entry point for future dissection of the neural circuitry underlying USV production. 展开更多
关键词 mPOA Optogenetics Vgat Vglut2 Ultrasonic vocalization Courtship
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Ultrasonic vocalizations in mice: relevance for ethologic and neurodevelopmental disorders studies 认领 引用 被引量：1
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作者 Marika Premoli Maurizio Memo Sara Anna Bonini 《Neural Regeneration Research》 SCIE CAS CSCD 2021年第6期1158-1167,共10页
Mice use ultrasonic vocalizations(USVs)to communicate each other and to convey their emotional state.USVs have been greatly characterized in specific life phases and contexts,such as mother isolation-induced USVs for ... Mice use ultrasonic vocalizations(USVs)to communicate each other and to convey their emotional state.USVs have been greatly characterized in specific life phases and contexts,such as mother isolation-induced USVs for pups or female-induced USVs for male mice during courtship.USVs can be acquired by means of specific tools and later analyzed on the base of both quantitative and qualitative parameters.Indeed,different ultrasonic call categories exist and have already been defined.The understanding of different calls meaning is still missing,and it will represent an essential step forward in the field of USVs.They have long been studied in the ethological context,but recently they emerged as a precious instrument to study pathologies characterized by deficits in communication,in particular neurodevelopmental disorders(NDDs),such as autism spectrum disorders.This review covers the topics of USVs characteristics in mice,contexts for USVs emission and factors that modulate their expression.A particular focus will be devoted to mouse USVs in the context of NDDs.Indeed,several NDDs murine models exist and an intense study of USVs is currently in progress,with the aim of both performing an early diagnosis and to find a pharmacological/behavioral intervention to improve patients’quality of life. 展开更多
关键词 autism spectrum disorders behavioral phenotyping emotional state environmental modulation maternal immune activation mouse models neurodevelopmental disorders social context ultrasonic communication vocalizations classification
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Taxonomic revision of the Savanna Nightjar(Caprimulgus affinis)complex based on vocalizations reveals three species 认领 引用
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作者 George Sangster Kim Manzon Cancino Robert O.Hutchinson 《Avian Research》 SCIE CSCD 2021年第4期526-533,共8页
Background:The Savanna Nightjar(Caprimulgus affinis)is a widespread,polytypic species which was previously treated as two or three species.It is currently treated as a single species based on superficial similarity of... Background:The Savanna Nightjar(Caprimulgus affinis)is a widespread,polytypic species which was previously treated as two or three species.It is currently treated as a single species based on superficial similarity of their songs but no detailed comparisons of the songs in this complex have been made.Methods:A total of 15 acoustic variables were measured for the songs of 86 individuals representing 8 of the 10 subspecies in the complex.Results:Three major groups can be distinguished based on univariate and multivariate analyses:a northern group consisting of the subspecies C.a.monticolus,C.a.amoyensis and C.a.stictomus;a southern group consisting of C.a.affinis,C.a.kasuidori,C.a.timorensis and C.a.propinquus;and a third group in the Philippines consisting of C.a.griseatus.Conclusions:It is here argued that these groups are best treated as species,and that Franklin's Nightjar(C.monticolus)and Kayumanggi Nightjar(C.griseatus)are reinstated as separate species. 展开更多
关键词 Caprimulgidae Macrogeograpic variation Taxonomy Vocalizations
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Previously unknown behavior in parasitic cuckoo females:male-like vocalization during migratory activity 认领 引用
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作者 Swetlana G.Meshcheryagina Alexey Opaev 《Avian Research》 SCIE CSCD 2021年第1期1-16,共16页
Background:In the last decade,enigmatic male-like cuckoo calls have been reported several times in East Asia.These calls exhibited a combination of vocal traits of both Oriental Cuckoo(Cuculus optatus)and Common Cucko... Background:In the last decade,enigmatic male-like cuckoo calls have been reported several times in East Asia.These calls exhibited a combination of vocal traits of both Oriental Cuckoo(Cuculus optatus)and Common Cuckoo(Cuculus canorus)advertising calls,and some authors therefore suggested that the enigmatic calls were produced by either Common×Oriental Cuckoo male hybrids or Common Cuckoo males having a gene mutation.However,the exact identity of calling birds are still unknown.Methods:We recorded previously unknown male-like calls from three captive Oriental Cuckoo females,and compared these calls with enigmatic vocalizations recorded in the wild as well as with advertising vocalizations of Common and Oriental Cuckoo males.To achieve this,we measured calls automatically.Besides,we video-recorded captive female emitting male-like calls,and compared these recordings with the YouTube recordings of calling males of both Common and Oriental Cuckoos to get insight into the mechanism of call production.Results:The analysis showed that female male-like calls recorded in captivity were similar to enigmatic calls recorded in the wild.Therefore,Oriental Cuckoo females might produce the latter calls.Two features of these female calls appeared to be unusual among birds.First,females produced male-like calls at the time of spring and autumn migratory activity and on migration in the wild.Because of this,functional significance of this call remained puzzling.Secondly,the male-like female call unexpectedly combined features of both closed-mouth(closed beak and simultaneous inflation of the‘throat sac')and open-mouth(prominent harmonic spectrum and the maximum neck extension observed at the beginning of a sound)vocal behaviors.Conclusions:The Cuculus vocalizations outside the reproductive season remain poorly understood.Here,we found for the first time that Oriental Cuckoo females can produce male-like calls in that time.Because of its rarity,this call might be an atavism.Indeed,female male-like vocalizations are still known in non-parasitic tropical and apparently more basal cuckoos only.Therefore,our findings may shed light on the evolution of vocal communication in avian brood parasites. 展开更多
关键词 Closed-mouth vocal behavior Cuckoo call Cuculus optatus Female song Male-like vocalization
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Perception and Recognition of Vocalization in Anuran Mate Choice 认领 引用
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作者 Fang LU Yezhong TANG Qin CHEN 《Asian Herpetological Research》 SCIE CSCD 2020年第4期394-400,共7页
Vocal communications in frogs and toads have been highly diversified and become a hot topic in the fields of herpetology,ecology,and behavioral neuroscience.The present short review summarized several interesting phen... Vocal communications in frogs and toads have been highly diversified and become a hot topic in the fields of herpetology,ecology,and behavioral neuroscience.The present short review summarized several interesting phenomena of vocal communication found mainly in anurans that might contribute to the individual identification of mates or rivals,including call matching,aggressive signaling,acoustic complexity,signal exaggeration,the first note effect and left hemisphere dominance.Investigations on the perception and recognition of vocal communications will facilitate our comprehension of the adaptive mechanisms and evolutionary paths of anuran signaling systems.We proposed here that comparative studies on acoustic signal structures,codes of sender status,and auditory neural responses based on phylogenetic relationships across species can highlight further the evolutionary trajectory in anurans. 展开更多
关键词 anuran adaptive mechanism evolution phonotaxis vocal communication
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Exploration of Arabic reading, in terms of the vocalization of the text form by registering the eyes movements of pupils 认领 引用
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作者 Djemaia Bensoltana Boualem Asselah 《World Journal of Neuroscience》 CAS 2013年第4期263-268,共6页
The intrinsic factors such as the visual constraints, extrinsic such as biomechanics, interface such as the support: the writing, the linguistics, the typography, the sense of progress of the language, have their impa... The intrinsic factors such as the visual constraints, extrinsic such as biomechanics, interface such as the support: the writing, the linguistics, the typography, the sense of progress of the language, have their impact on the habit, and the fittest and particularly the efficiency in reading. We suspect that circuits and zones involved in horizontal orientation “right to the left” are not the same the other way around hanging the linguistic collection. Reading Arabic provided with a specific difference in vocalization proves to be a valuable model verification two major issues which arouse language perception: [lexical processing: is it instantaneous (visual memory) or delayed (memory-tampon)? ···]. And a comparison with other models of language detection mechanisms and brain areas mnemonics which is involved in making information. Results are significatively: children vocalized mode is best seen. It must extend the duration of the mode without vowels. In our opinion, our study is original, and we introduced what a valuable tool in the diagnosis of visual and cognitive strategy by the biotechnology technical based on variations in terms of reading. This opens a horizon of opportunity for the application of the method to the Arabic language to determine the differences in eye size reflecting the effects of task variables in reading and a comparative study of other languages. 展开更多
关键词 Eye Movements in Reading-Learning in School Method Photoelectric Saccadic Ocular Lexical Vocalization in Arabic
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浅析英语中的R Dropping与L Vocalization 认领 引用
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作者 曹国平 《山东外语教学》 北大核心 1989年第3期14-18,共5页
在英语语音发展史上,从15世纪至18世纪是一个上升时期,语音的演变较多较快.到了十九世纪,英语语音就处于一个相对稳定的停滞阶段,语音基本没有变化.但是20世纪的情况又有所不同,英语语音的发展再次出现了上升时期,而且在速度上还超过了... 在英语语音发展史上,从15世纪至18世纪是一个上升时期,语音的演变较多较快.到了十九世纪,英语语音就处于一个相对稳定的停滞阶段,语音基本没有变化.但是20世纪的情况又有所不同,英语语音的发展再次出现了上升时期,而且在速度上还超过了上一次,特别是在二次世界大战以后.R Dropping出现在第一次上升期中,而L Vocalizatiou则从本世纪初出现,也就是第二次上升期中.两者在英语语音史上都起了重要的历史作用。 展开更多
关键词 英语语音 L Vocalization R Dropping 元音化 停滞阶段 双元音 国际英语 增音 音段 十九世纪
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Humans identify negative (but not positive) arousal in silver fox vocalizations: implications for the adaptive value of interspecific eavesdropping 认领 引用 被引量：2
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作者 Piera FILIPPI Svetlana S. GOGOLEVA +2 位作者 Elena V. VOLODINA Ilya A. VOLODIN Bart de BOER 《Current Zoology》 SCIE CAS CSCD 2017年第4期445-456,共12页
The ability to identify emotional arousal in heterospecific vocalizations may facilitate behaviors that increase survival opportunities. Crucially, this ability may orient inter-species interactions, par- ticularly be... The ability to identify emotional arousal in heterospecific vocalizations may facilitate behaviors that increase survival opportunities. Crucially, this ability may orient inter-species interactions, par- ticularly between humans and other species. Research shows that humans identify emotional arousal in vocalizations across multiple species, such as cats, dogs, and piglets. However, no previ- ous study has addressed humans＂ ability to identify emotional arousal in silver foxes. Here, we adopted low- and high-arousal calls emitted by three strains of silver fox--Tame, Aggressive, and Unselected--in response to human approach. Tame and Aggressive foxes are genetically selected for friendly and attacking behaviors toward humans, respectively. Unselected foxes show aggres- sive and fearful behaviors toward humans. These three strains show similar levels of emotional arousal, but different levels of emotional valence in relation to humans. This emotional information is reflected in the acoustic features of the calls. Our data suggest that humans can identify high- arousal calls of Aggressive and Unselected foxes, but not of Tame foxes. Further analyses revealed that, although within each strain different acoustic parameters affect human accuracy in identifying high-arousal calls, spectral center of gravity, harmonic-to-noise ratio, and F0 best predict humans＇ ability to discriminate high-arousal calls across all strains. Furthermore, we identified in spectral center of gravity and F0 the best predictors for humans＇ absolute ratings of arousal in each call. Implications for research on the adaptive value of inter-specific eavesdropping are discussed. 展开更多
关键词 eavesdropping emotional arousal emotional valence inter-species communication silver foxes vocal communication.
Lack of response to conspecific juvenile vocalizations in two avian brood parasites 认领 引用 被引量：1
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作者 Rocío Prieto María Cecilia De Mársico +1 位作者 Juan C.Reboreda Romina C.Scardamaglia 《Current Zoology》 SCIE CAS CSCD 2024年第5期589-595,共7页
Juveniles of interspecific avian brood parasites need to locate and recognize conspecifics to continue their life cycle after being reared by individuals of another species.However,little is known about the recognitio... Juveniles of interspecific avian brood parasites need to locate and recognize conspecifics to continue their life cycle after being reared by individuals of another species.However,little is known about the recognition mechanisms and cues involved in this critical stage of their lives.It has been proposed that adult parasites could show some kind of parental behavior by actively searching and interacting with conspecific young,which in turn could serve the juveniles to learn and/or reinforce the learning of conspecific characteristics.Since acoustic communication is one of the main channels used by birds,if such form of parental behavior by adult avian brood parasites does exist,adult cowbirds should recognize and respond positively to vocalizations of conspecific juveniles.We experimentally tested whether adult shiny Molothrus bonariensis and screaming M.rufoaxillaris cowbirds respond positively towards acoustic signals of conspecific juveniles using two playback experiments,one conducted in semi-captivity and the other in the field.In both cases,we presented 3 types of playbacks to adults of both cowbird species:vocalizations of shiny cowbird juveniles,vocalizations of screaming cowbird juveniles,and white noise as a control.In the experiment in semi-captivity,no significant differences were found between treatments.In the field experiment,no conspecifics approached the playback area,but hosts of the species whose playback was played were attracted to the loudspeaker.In conclusion,our results do not support the predictions we tested from the parental behavior hypothesis and indicate that adult shiny and screaming cowbirds do not respond positively to acoustic signals of conspecific juveniles,at least not to the type of signals used in our experiments. 展开更多
关键词 brood parasitism fledglings Molothrus parental behavior hypothesis vocal recognition
Parametric Modeling of Glottal Flow in Form of Piecewise Differential Equations 认领 引用
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作者 MUSHTAQ Tahir MURTAZA Sadaf +2 位作者 SALEEM Muhammad FARHAD Khurram EJAZ Muhammad Faisal 《Journal of Shanghai Jiaotong university(Science)》 EI 2026年第4期1048-1056,I0021,共9页
For realistic speech generation,variation in glottal waveform models has long been proposed.Due to simplicity and efficiency,the parametric models of the glottal flow are very popular in the field of speech generation... For realistic speech generation,variation in glottal waveform models has long been proposed.Due to simplicity and efficiency,the parametric models of the glottal flow are very popular in the field of speech generation.The proposed work presents a new approach to modeling the glottal flow.The current model is comprised of two piecewise differential equations that generate a glottal pulse.The first and second differential equations generate the opening and closing phases of the vocal folds,respectively while the closed phase is taken as zero.There are four parameters involved in the proposed model to bring variation in the shape of the glottal pulse.The current model is very flexible in designing a glottal pulse and is comparable with the famous Liljencrants-Fant model,Rosenberg model,and KLGLOTT88 model.This comparison supports its successful implementation as a voice source in speech synthesis which also leads to the validity of our differential equation-based glottal model. 展开更多
关键词 glottal flow Liljencrants-Fant glottal model vocal folds parametric model differential form
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Bridging the gap between subjective and objective measures:A multimodal protocol for adolescent depression detection 认领 引用
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作者 Yan Zeng Jian Yang Li Kuang 《World Journal of Psychiatry》 SCIE 2026年第4期351-360,共10页
BACKGROUND Adolescent depression is a pressing global public health challenge.Current screening largely depends on self-reported questionnaires,which are vulnerable to response biases and underreporting.Integrating ob... BACKGROUND Adolescent depression is a pressing global public health challenge.Current screening largely depends on self-reported questionnaires,which are vulnerable to response biases and underreporting.Integrating objective behavioral signals with validated scales may bridge this subjective-objective gap and improve detection performance.AIM To develop a novel multimodal protocol integrating video-recorded facial expressions,vocal prosody,and the Chinese Secondary School Students Depression Scale(CSSSDS)to improve the accuracy and robustness of depression detection for adolescents in China' Mainland.METHODS A total of 771 adolescents(aged 12-18 years,mean 15.23±1.68)were recruited.Facial expressions,reading-aloud voices,and CSSSDS scale data were collected from all participants.Five machine learning algorithms[extreme gradient boosting(XGBoost),logistic regression,random forest,support vector machine,and artificial neural network]were trained under two conditions:(1)A multimodal protocol that combined facial expressions,vocal prosody,and the CSSSDS;and(2)A bimodal protocol that combined facial expressions and vocal prosody.Performance was evaluated using accuracy,precision,recall,F1 score,area under the receiver operating characteristic curve(AUC-ROC),and area under the precision-recall curve(AUC-PR)with repeated 10-fold cross-validation.RESULTS Statistical analysis confirmed XGBoost as the preferred algorithm in both multimodal and bimodal protocols,showing statistically significant superiority(P1.0).The multimodal model also demonstrated significantly greater stability in core discriminative metrics(AUC-ROC,AUC-PR,and recall;all P<0.05).CONCLUSION The XGBoost-driven multimodal model demonstrated superior discriminative power,greater stability,and a balanced precision-recall profile compared with bimodal models and other algorithms.Nevertheless,limitations related to sample size,use of a regionspecific scale,and task-driven data collection mean that further validation in larger,more diverse,and ecologically valid settings is warranted. 展开更多
关键词 Adolescent depression Multimodal detection Facial expression Vocal prosody Machine learning Extreme gradient boosting
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Sex differences in the influence of social context, salient social stimulation and amphetamine on ultrasonic vocalizations in prairie voles 认领 引用 被引量：1
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作者 Sean T.MA Shanna L.RESENDEZ Brandon J.ARAGONA 《Integrative Zoology》 SCIE CSCD 2014年第3期280-293,共14页
Prairie voles(Microtus ochrogaster)are a socially monogamous rodent species and their cooperative behaviors require extensive communication between conspecifics.Rodents use ultrasonic vocalizations(USVs)to communicate... Prairie voles(Microtus ochrogaster)are a socially monogamous rodent species and their cooperative behaviors require extensive communication between conspecifics.Rodents use ultrasonic vocalizations(USVs)to communicate and because a prairie vole breeder pair must engage in extensive cooperation for successful reproduction,auditory communication may be critical for this species.Therefore,we sought to characterize USVs in adult male and female prairie voles,and to determine how these calls are influenced by social context,salient social stimuli and the psychostimulant drug of abuse amphetamine(AMPH).Here,we characterize prairie vole USVs by showing the range of frequencies of prairie vole USVs,the proportion of various call types,how these call types compare between males and females,and how they are influenced by social stimulation and AMPH.AMPH caused a robust increase in the number of USVs in both males and females and there was a dramatic sex difference in the complexity of call structures of AMPH-induced USVs,with males emitting more elaborate calls.Moreover,we show that novel(i.e.salient)social cues evoked differential increases in USVs across sex,with males showing a much more robust increase in USV production,both with respect to the frequency and complexity of USV production.Exposure to an estrous female in particular caused an extraordinary increase in USVs in male subjects.These data suggest that USVs may be a useful measure of social motivation in this species,including how social behaviors can be impacted by drugs of abuse. 展开更多
关键词 amphetamine dopamine mate choice pair bonding ultrasonic vocalization
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Removing non-avian sounds enhances correlations between acoustic indices and bird vocal activity in urban environments 认领 引用
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作者 Qihao Jiang Ruirui Mao +5 位作者 Yilin Zhao Jiangjian Xie Congtian Lin Rui Zhu Zhishu Xiao Jiang Chang 《Avian Research》 SCIE CAS CSCD 2026年第2期489-498,共10页
Acoustic indices have been increasingly explored as possible proxies for biodiversity,yet in complex environments non-avian sounds often mask bird vocalizations,compromising assessment accuracy and ecological represen... Acoustic indices have been increasingly explored as possible proxies for biodiversity,yet in complex environments non-avian sounds often mask bird vocalizations,compromising assessment accuracy and ecological representativeness.To address this,we developed an integrated framework that combines deep learning-based soundscape classification with a threshold-optimized strategy for removing non-avian recordings.A multilabel model was trained to identify 12 representative soundscape categories.Non-avian recordings were then removed using threshold criteria optimized through systematic evaluation of threshold combinations,maximizing correlations between six acoustic indices[acoustic complexity index(ACI),acoustic diversity index(ADI),acoustic evenness index(AEI),bioacoustic index(BIO),normalized difference soundscape index(NDSI),acoustic entropy index(H)]and bird vocal activity while retaining as much useable recording data as possible to avoid excessive reduction of sample size.To validate the effectiveness of our framework,generalized additive models and random forest regressions were used to compare diel patterns and predict bird vocal activity before and after removal.Using data from 19 passive acoustic recorders in the Central Green Forest Park,Beijing,we found insect sounds exerted the strongest masking effect on relationships between indices and bird vocal activity.Applying optimized removal improved temporal alignment of indices with bird vocal activity and enhanced predictive performance.This study demonstrates that threshold-guided removal of non-avian recordings strengthen the ecological interpretability and predictive utility of acoustic indices in biodiversity monitoring. 展开更多
关键词 Acoustic indices Bird vocal activity Non-target removal Soundscape classification Urban Environment
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Microgeographic variation in the songs of an endemic Hawaiian honeycreeper 认领 引用
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作者 Paulo C.Ditzel Esther Sebastián-González Patrick J.Hart 《Avian Research》 SCIE CAS CSCD 2026年第1期116-122,共7页
Many bird species are known to differ in their vocal repertoires between populations across a range of geographic scales.This is generally assumed to be caused by acoustic drift and social learning of small difference... Many bird species are known to differ in their vocal repertoires between populations across a range of geographic scales.This is generally assumed to be caused by acoustic drift and social learning of small differences in songs among individuals in separate populations.To determine the extent to which vocal repertoire is structured in a highly nomadic species with a low degree of isolation among populations,we characterized the vocalizations of the'Apapane(Himatione sanguinea)and described the variations in its songs on a microgeographic scale.'Apapane had significant shifts in their songs in both fragmented and non-fragmented forest habitats,with little to no overlap in song meme structure within distances as short as 2 km,despite birds moving freely between areas with distinct songs.Forest fragments had unique song compositions and shared more syllables with closer fragments than with the ones further apart.Furthermore,microgeographic variation was relatively stable at a given recording location even over multiple years.This pattern of song differentiation in a highly mobile species at the microgeographic scale may be a consequence of their ability to learn new vocalizations over their life and of intraspecific mimicry,or“vocal matching”by individuals visiting other populations. 展开更多
关键词 Bioacoustics Dialects Habitat fragmentation Hawaiian honeycreepers Microgeographic repertoire Vocal matching
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Nonlinear oscillation of pathological vocal folds during vocalization 认领 引用 被引量：2
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作者 WAN Ni PENG DanDan +1 位作者 SUN Min ZHANG Dong 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第7期1324-1328,共5页
The extended two-mass model is adopted to analyze the nonlinear oscillation of pathological vocal folds during vocalization. Redundant tissue or area in laryngeal patients is modeled as a massless rigid connected to t... The extended two-mass model is adopted to analyze the nonlinear oscillation of pathological vocal folds during vocalization. Redundant tissue or area in laryngeal patients is modeled as a massless rigid connected to the upper mass of the vocal folds, and a parameter Q is introduced to represent the change of glottal configurations and tension imbalance between the left and right sides of vocal folds. Numerical simulations demonstrate that the pathological vocal-fold decreases the threshold of Q to generate nonlinear vocal oscillation, indicating the improvement of the sensitivity of vocal folds to asymmetries and enhancing the coupling between two sides. Furthermore, the pathological vocal-fold can lower the fundamental frequency and eliminate high-order harmonics, For example, the fundamental frequency decreases from 119.94 Hz to 84.95 Hz when Q=0.58 and the sub-glottal pressure 1450 Pa. However, there are no prominent effects on the amplitudes of sub-harmonic and low-order harmonics. 展开更多
关键词 nonlinear oscillation two-mass model asymmetrical vocal fold
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Control pattern of vocal center for vocalization in ruddy bunting(Emberiza rutila) 认领 引用 被引量：1
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作者 赵静 蒋锦昌 李东风 《Science China(Life Sciences)》 CAS 2003年第6期615-622,共8页
High vocal center (HVC) can produce single sound with one or two syllables by the sin-gle-type vocal control pattern in songbirds ruddy bunting (Emberiza rutila). It obviously shows left-side dominance in controlling ... High vocal center (HVC) can produce single sound with one or two syllables by the sin-gle-type vocal control pattern in songbirds ruddy bunting (Emberiza rutila). It obviously shows left-side dominance in controlling double syllables, principal frequency (PF) and increasing sound intensity of the evoked calls. Meanwhile, the complex-type control pattern can produce complex calls with multisyllable, and also shows significant left-side dominance in controlling the number of syllables, tone changing and sound intensity. These indicate that left-side HVC controls higher frequency and complicated sentence structure. The basic vocal center, dorsomedial nucleus of the intercollicular complex (DM), controls the monosyllable sound in songbirds, and shows left-side dominance in controlling both the number of syllable and sound intensity. These results not only provide some direct evidence for left-side dominance in high vocal center, but also indicate that there is some internal connection between the high and basic vocal centers in songbirds. 展开更多
关键词 ruddy bunting, high vocal center, basic vocal center, control pattern, left-side dominance.
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