Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Vocal Behavior"”.
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Neural mechanisms of early motor control in the vocal behavior of juvenile songbirds
… properly coordinate motor gestures into complex behavioral sequences? To a surprising extent, for many advanced vertebrate behaviors this knowledge is neither innately programmed nor acquired via deterministic developmental rules, but must be learned through trial-and-error exploration. This …
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Orchestration : the movement and vocal behavior of free-ranging Norwegian killer whales (Orcinus orca)
Studying the social and cultural transmission of behavior among animals helps to identify patterns of interaction and information content flowing between individuals. Killer whales are likely to acquire traits culturally based on their population-specific feeding behaviors and group-distinctive …
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Orchestration : the movement and vocal behavior of free-ranging Norwegian killer whales (Orcinus orca)
Studying the social and cultural transmission of behavior among animals helps to identify patterns of interaction and information content flowing between individuals. Killer whales are likely to acquire traits culturally based on their population-specific feeding behaviors and group-distinctive …
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The distinct neural mechanisms underlying the production of stereotyped and exploratory vocal behavior in songbirds
… serve, humans can perform an incredible range of behaviors, most of which are learned. How do we and other animals learn complicated sequential behaviors, and once they are learned how are they executed? This thesis is an investigation into the neural basis of the two modes of behavior that occur …
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Acoustic-phonetic analysis of the prespeech vocalizations of babies with cleft palate
… means of investigating the prespeech vocalizations of babies with cleft palate. Because prespeech vocalizations appear to play an important role in the acquisition of language, it is vital to have a means of identifying these vocalizations beyond the phonemic inventory which omits …
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Harbor Seal (Phoca vitulina) Reproductive Advertisement Behavior And The Effects Of Vessel Noise
… mating pinnipeds, male harbor seals produce vocalizations during the breeding season that function in male-male interactions and possibly as an attractant for females. I investigated multiple aspects of these reproductive advertisement displays in a population of harbor seals in Glacier Bay …
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Vocal Response of Bottlenose Dolphins (<i>Tursiops truncatus</i>) to a Novel Stimulus
… communication. Although some aspects of dolphin vocal behavior are well understood, less is known about vocalizations in different behavioral contexts and how these vocal behaviors may indicate habituation and sensitization. The focus of this study was to investigate how bottlenose dolphins …
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Dialects, Sex-specificity, and Individual Recognition in the Vocal Repertoire of the Puerto Rican Parrot (Amazona vittata)
… portion of the study reported here documents the vocal behavior of A. vittata during the reproductive season and examines the possibility of using vocalizations to identify individuals, determine the sex of individuals and determine the location of an individual's breeding territory. Objectives of …
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Cell Type-Specific Roles of FoxP Transcription Factors in Vocalization and Cognition
… important functions in neural circuits mediating vocalization and sensorimotor learning. Their known gene targets regulate neuronal development, activity, and plasticity, and animal models of FoxP2 and FoxP1 function have linked some of these molecular functions with neurophysiological and …
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Acoustical analyses of chicken vocalizations
Vocalizations of the domestic chicken were recorded and analyzed by quantitative and qualitative methods in two experiments. In Experiment 1, recordings were made from males and females from two lines of White Leghorn chickens housed in individual battery cages. Five call types: crow, disturbance …
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The choreography of belonging : toothed whale spatial cohesion and acoustic communication
… studied toothed whale, but research on acoustic behavior has been limited by an inability to identify the vocalizing individual or measure inter-animal distances in the wild. This thesis resolves these problems by simultaneously deploying acoustic tags on closely-associated pairs of known …
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The role of social environment in shaping vocal communication systems in wild songbirds
For many taxa, vocal communication is an essential means of navigating continuously changing social and ecological environments. Among passerine birds, vocal signals are critical to survival and play an important role in mate attraction, territory defense, and predator avoidance. In my …
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The choreography of belonging : toothed whale spatial cohesion and acoustic communication
… studied toothed whale, but research on acoustic behavior has been limited by an inability to identify the vocalizing individual or measure inter-animal distances in the wild. This thesis resolves these problems by simultaneously deploying acoustic tags on closely-associated pairs of known …
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Young infants' attention and emotional responses to dynamic and static bimodal displays of affect
… to elucidate the function of adult facial and vocal behavior for infant perception and expression of affect. Nine infants were studied longitudinally at 2 months and at 3 1/2 months using a dynamic visual display that consisted of a videotape of a woman moving her face while expressing …
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Flight Vocalizations and Displays of Adult Chimney Swifts (Chaetura Pelagica): Description and Function
<p>The vocalizations of many songbirds have been well documented and analyzed, but less is known about the vocal behavior of many non-passerines, including swifts. While flying alone as well as during aerial displays with conspecifics, Chimney Swifts (Chaetura pelagica) often utter a twitter call …
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Interrelationships of conspecific responses to call quality and body size of male Rana clamitans (Anura: Ranidae)
The vocal behavior of male Rana clamitans was studied during the summers of 1974-1976 near Blacksburg, Montgomery Co., Virginia to test the hypothesis that call quality varies among callers and this variation produces different responses in recipient conspecifics. The studied call repertoire …
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Mechanisms of Vocal Coordination in Zebra Finches
… they can be used adaptably to coordinate behavior with other individuals. It is not known, however, what each animal needs to learn in order to achieve and maintain synchronized call patterns with others. To study this process, we have developed a vocal robot that can be programed to …
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Diversity of Form, Content, and Function in the Vocal Signals of Adult Male Blue Monkeys (Cercopithecus mitis stuhlmanni): An Evolutionary Approach to Understanding a Signal Repertoire
… virtually every vertebrate taxonomic division, vocal signals play key roles in predator avoidance, reproduction, competition, and mediating social interactions. Understanding signaling systems, and the various selection factors relating to their evolution and maintenance, therefore provides …
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Influence of Mouse Motor Cortex on Vocal Musculature
<p>Learned vocal communication and spoken language are complex behaviors we have long sought to understand. Studying the neurobiology of speech and language will be advanced by investigating its component traits in model organisms. Most vertebrates share common brainstem circuits for vocalization, …
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Dialect Use Within a Socially Fluid Group of Southern Resident Killer Whales, <i>Orcinus orca</i>
<p>Resident killer whales, <em>Orcinus orca</em>, of the Northeastern Pacific form stable kinship-based matrifocal associations and communicate with group-specific repertoires of discrete calls (dialects) that reflect these associations. The gradual fission of matrilines is usually consistent with …
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