Records |
Author |
Seyfarth, R.M.; Cheney, D.L. |
Title |
The acoustic features of vervet monkey grunts |
Type |
Journal Article |
Year |
1984 |
Publication |
The Journal of the Acoustical Society of America |
Abbreviated Journal |
J Acoust Soc Am |
Volume |
75 |
Issue |
5 |
Pages |
1623-1628 |
Keywords |
*Acoustics; Animals; Auditory Perception; Cercopithecus/*physiology; Cercopithecus aethiops/*physiology; Cues; Dominance-Subordination; Female; Male; Social Behavior; Sound Spectrography; *Vocalization, Animal |
Abstract |
East African vervet monkeys give short (125 ms), harsh-sounding grunts to each other in a variety of social situations: when approaching a dominant or subordinate member of their group, when moving into a new area of their range, or upon seeing another group. Although all these vocalizations sound similar to humans, field playback experiments have shown that the monkeys distinguish at least four different calls. Acoustic analysis reveals that grunts have an aperiodic F0, at roughly 240 Hz. Most grunts exhibit a spectral peak close to this irregular F0. Grunts may also contain a second, rising or falling frequency peak, between 550 and 900 Hz. The location and changes in these two frequency peaks are the cues most likely to be used by vervets when distinguishing different grunt types. |
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English |
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ISSN |
0001-4966 |
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Notes |
PMID:6736426 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
703 |
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Author |
Zentall, S.S.; Zentall, T.R. |
Title |
Activity and task performance of hyperactive children as a function of environmental stimulation |
Type |
Journal Article |
Year |
1976 |
Publication |
Journal of consulting and clinical psychology |
Abbreviated Journal |
J Consult Clin Psychol |
Volume |
44 |
Issue |
5 |
Pages |
693-697 |
Keywords |
Achievement; Acoustic Stimulation; *Arousal; Auditory Perception; Child; Humans; Hyperkinesis/*etiology; Photic Stimulation; Visual Perception |
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English |
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ISSN |
0022-006X |
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Notes |
PMID:965541 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
272 |
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Author |
Harland, M.M.; Stewart, A.J.; Marshall, A.E.; Belknap, E.B. |
Title |
Diagnosis of deafness in a horse by brainstem auditory evoked potential |
Type |
Journal Article |
Year |
2006 |
Publication |
The Canadian Veterinary Journal. La Revue Veterinaire Canadienne |
Abbreviated Journal |
Can Vet J |
Volume |
47 |
Issue |
2 |
Pages |
151-154 |
Keywords |
Acoustic Stimulation/veterinary; Animals; Deafness/congenital/diagnosis/*veterinary; Evoked Potentials, Auditory, Brain Stem/*physiology; Horse Diseases/congenital/*diagnosis; Horses; Male; Pigmentation/physiology; Sensitivity and Specificity |
Abstract |
Deafness was confirmed in a blue-eyed, 3-year-old, overo paint horse by brainstem auditory evoked potential. Congenital inherited deafness associated with lack of facial pigmentation was suspected. Assessment of hearing should be considered, especially in paint horses, at the time of pre-purchase examination. Brainstem auditory evoked potential assessment is well tolerated and accurate. |
Address |
Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Wire Road, Auburn, Alabama, USA |
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English |
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ISSN |
0008-5286 |
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Notes |
PMID:16579041 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
5680 |
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Author |
Gentner, T.Q.; Fenn, K.M.; Margoliash, D.; Nusbaum, H.C. |
Title |
Recursive syntactic pattern learning by songbirds |
Type |
Journal Article |
Year |
2006 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume |
440 |
Issue |
7088 |
Pages |
1204-1207 |
Keywords |
Acoustic Stimulation; *Animal Communication; Animals; Auditory Perception/*physiology; Humans; *Language; Learning/*physiology; Linguistics; Models, Neurological; Semantics; Starlings/*physiology; Stochastic Processes |
Abstract |
Humans regularly produce new utterances that are understood by other members of the same language community. Linguistic theories account for this ability through the use of syntactic rules (or generative grammars) that describe the acceptable structure of utterances. The recursive, hierarchical embedding of language units (for example, words or phrases within shorter sentences) that is part of the ability to construct new utterances minimally requires a 'context-free' grammar that is more complex than the 'finite-state' grammars thought sufficient to specify the structure of all non-human communication signals. Recent hypotheses make the central claim that the capacity for syntactic recursion forms the computational core of a uniquely human language faculty. Here we show that European starlings (Sturnus vulgaris) accurately recognize acoustic patterns defined by a recursive, self-embedding, context-free grammar. They are also able to classify new patterns defined by the grammar and reliably exclude agrammatical patterns. Thus, the capacity to classify sequences from recursive, centre-embedded grammars is not uniquely human. This finding opens a new range of complex syntactic processing mechanisms to physiological investigation. |
Address |
Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois 60637, USA. tgentner@ucsd.edu |
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English |
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Series Volume |
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Edition |
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ISSN |
1476-4687 |
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Notes |
PMID:16641998 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
353 |
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Author |
Parr, L.A. |
Title |
Perceptual biases for multimodal cues in chimpanzee (Pan troglodytes) affect recognition |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
3 |
Pages |
171-178 |
Keywords |
Acoustic Stimulation; *Animal Communication; Animals; Auditory Perception/physiology; Cues; Discrimination Learning/*physiology; Facial Expression; Female; Male; Pan troglodytes/*psychology; Perceptual Masking/*physiology; Photic Stimulation; Recognition (Psychology)/*physiology; Visual Perception/physiology; *Vocalization, Animal |
Abstract |
The ability of organisms to discriminate social signals, such as affective displays, using different sensory modalities is important for social communication. However, a major problem for understanding the evolution and integration of multimodal signals is determining how humans and animals attend to different sensory modalities, and these different modalities contribute to the perception and categorization of social signals. Using a matching-to-sample procedure, chimpanzees discriminated videos of conspecifics' facial expressions that contained only auditory or only visual cues by selecting one of two facial expression photographs that matched the expression category represented by the sample. Other videos were edited to contain incongruent sensory cues, i.e., visual features of one expression but auditory features of another. In these cases, subjects were free to select the expression that matched either the auditory or visual modality, whichever was more salient for that expression type. Results showed that chimpanzees were able to discriminate facial expressions using only auditory or visual cues, and when these modalities were mixed. However, in these latter trials, depending on the expression category, clear preferences for either the visual or auditory modality emerged. Pant-hoots and play faces were discriminated preferentially using the auditory modality, while screams were discriminated preferentially using the visual modality. Therefore, depending on the type of expressive display, the auditory and visual modalities were differentially salient in ways that appear consistent with the ethological importance of that display's social function. |
Address |
Division of Psychobiology, Yerkes National Primate Research Center, Emory University, 954 Gatewood Road, GA 30329, Atlanta, USA. parr@rmy.emory.edu |
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ISSN |
1435-9448 |
ISBN |
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Conference |
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Notes |
PMID:14997361 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2544 |
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Author |
Shettleworth, S.J. |
Title |
Stimulus relevance in the control of drinking and conditioned fear responses in domestic chicks (Gallus gallus) |
Type |
Journal Article |
Year |
1972 |
Publication |
Journal of comparative and physiological psychology |
Abbreviated Journal |
J Comp Physiol Psychol |
Volume |
80 |
Issue |
2 |
Pages |
175-198 |
Keywords |
Acoustic Stimulation; Animals; Auditory Perception; Chickens; *Conditioning (Psychology); Conditioning, Classical; Discrimination Learning; *Drinking Behavior; Electroshock; *Fear; *Light; Motor Activity; Photic Stimulation; Punishment; Quinine; *Sound; Taste; Visual Perception |
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ISSN |
0021-9940 |
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Notes |
PMID:5047826 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
390 |
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Author |
Seyfarth, R.M.; Cheney, D.L. |
Title |
Signalers and receivers in animal communication |
Type |
Journal Article |
Year |
2003 |
Publication |
Annual review of psychology |
Abbreviated Journal |
Annu Rev Psychol |
Volume |
54 |
Issue |
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Pages |
145-173 |
Keywords |
Affect; *Animal Communication; Animals; Arousal; Auditory Perception; Motivation; *Social Behavior; Social Environment; Species Specificity; *Vocalization, Animal |
Abstract |
In animal communication natural selection favors callers who vocalize to affect the behavior of listeners and listeners who acquire information from vocalizations, using this information to represent their environment. The acquisition of information in the wild is similar to the learning that occurs in laboratory conditioning experiments. It also has some parallels with language. The dichotomous view that animal signals must be either referential or emotional is false, because they can easily be both: The mechanisms that cause a signaler to vocalize do not limit a listener's ability to extract information from the call. The inability of most animals to recognize the mental states of others distinguishes animal communication most clearly from human language. Whereas signalers may vocalize to change a listener's behavior, they do not call to inform others. Listeners acquire information from signalers who do not, in the human sense, intend to provide it. |
Address |
Department of Psychology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. seyfarth@psych.upenn.edu |
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ISSN |
0066-4308 |
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PMID:12359915 |
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no |
Call Number |
refbase @ user @ |
Serial |
690 |
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Author |
Hauber, M.E.; Pearson, H.E.; Reh, A.; Merges, A. |
Title |
Discrimination between host songs by brood parasitic brown-headed cowbirds ( Molothrus ater) |
Type |
Journal Article |
Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
5 |
Issue |
3 |
Pages |
129-137 |
Keywords |
Animals; *Auditory Perception; *Discrimination Learning; Female; Male; Sexual Behavior; *Songbirds; *Vocalization, Animal |
Abstract |
Songbirds can learn both to produce and to discriminate between different classes of acoustic stimuli. Varying levels of auditory discrimination may improve the fitness of individuals in certain ecological and social contexts and, thus, selection is expected to mold the cognitive abilities of different species according to the potential benefits of acoustic processing. Although fine-scale auditory discrimination of conspecific songs and calls has been frequently reported for brood parasitic brown-headed cowbirds ( Molothrus ater), it remains unclear why and how they perceive differently the songs of their many host species. Using habituation-dishabituation paradigms and measuring behavioral and physiological (heart-rate) responses, we found that captive female cowbirds consistently discriminated between songs of two host species, the song sparrow ( Melospiza melodia) and the red-winged blackbird ( Agelaius phoeniceus). Playback experiments with stimuli composed of con-specific followed by heterospecific vocalizations in the field also demonstrated discrimination between these heterospecific songs even though cowbirds were not attracted to playbacks of either host species' songs alone. Our results do not directly support a nest-searching function of heterospecific song discrimination by cowbirds and are most consistent with a function of the parasites' avoidance of attacks by their aggressive hosts. These data demonstrate discrimination between heterospecific vocalizations by brown-headed cowbirds and add a novel dimension to the already expansive auditory perceptual abilities of brood parasitic species and other songbirds. |
Address |
Field Neurobiology and Behavior, Cornell, University, Ithaca, NY 14853, USA. hauberm@socrates.berkeley.edu |
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ISSN |
1435-9448 |
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Notes |
PMID:12357285 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2600 |
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Author |
Cheney, D.L.; Seyfarth, R.M.; Silk, J.B. |
Title |
The responses of female baboons (Papio cynocephalus ursinus) to anomalous social interactions: evidence for causal reasoning? |
Type |
Journal Article |
Year |
1995 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
Volume |
109 |
Issue |
2 |
Pages |
134-141 |
Keywords |
Animals; Attention; Auditory Perception; *Awareness; *Concept Formation; *Dominance-Subordination; Fear; Female; Hierarchy, Social; Papio/*psychology; *Social Behavior; Social Environment; Vocalization, Animal |
Abstract |
Baboons' (Papio cynocephalus ursinus) understanding of cause-effect relations in the context of social interactions was examined through use of a playback experiment. Under natural conditions, dominant female baboons often grunt to more subordinate mothers when interacting with their infants. Mothers occasionally respond to these grunts by uttering submissive fear barks. Subjects were played causally inconsistent call sequences in which a lower ranking female apparently grunted to a higher ranking female, and the higher ranking female apparently responded with fear barks. As a control, subjects heard a sequence made causally consistent by the inclusion of grunts from a 3rd female that was dominant to both of the others. Subjects responded significantly more strongly to the causally inconsistent sequences, suggesting that they recognized the factors that cause 1 individual to give submissive vocalizations to another. |
Address |
Department of Biology, University of Pennsylvania, Philadelphia 19104, USA |
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English |
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Series Volume |
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Edition |
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ISSN |
0735-7036 |
ISBN |
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Notes |
PMID:7758289 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
348 |
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Author |
Heffner, R.S.; Heffner, H.E. |
Title |
Localization of tones by horses: use of binaural cues and the role of the superior olivary complex |
Type |
Journal Article |
Year |
1986 |
Publication |
Behavioral Neuroscience |
Abbreviated Journal |
Behav Neurosci |
Volume |
100 |
Issue |
1 |
Pages |
93-103 |
Keywords |
Animals; Auditory Pathways/physiology; Auditory Perception/*physiology; Avoidance Learning/physiology; Brain Mapping; Electroshock; Female; Horses/*physiology; Male; Olivary Nucleus/anatomy & histology/*physiology; Orientation/physiology; Pitch Perception/physiology; Sound Localization/*physiology |
Abstract |
The ability of horses to use binaural time and intensity difference cues to localize sound was assessed in free-field localization tests by using pure tones. The animals were required to discriminate the locus of a single tone pip ranging in frequency from 250 Hz to 25 kHz emitted by loudspeakers located 30 degrees to the left and right of the animals' midline (60 degrees total separation). Three animals were tested with a two-choice procedure; 2 additional animals were tested with a conditioned avoidance procedure. All 5 animals were able to localize 250 Hz, 500 Hz, and 1 kHz but were completely unable to localize 2 kHz and above. Because the frequency of ambiguity for the binaural phase cue delta phi for horses in this test was calculated to be 1.5 kHz, these results indicate that horses can use binaural time differences in the form of delta phi but are unable to use binaural intensity differences. This finding was supported by an unconditioned orientation test involving 4 additional horses, which showed that horses correctly orient to a 500-Hz tone pip but not to an 8-kHz tone pip. Analysis of the superior olivary complex, the brain stem nucleus at which binaural interactions first take place, reveals that the lateral superior olive (LSO) is relatively small in the horse and lacks the laminar arrangement of bipolar cells characteristic of the LSO of most mammals that can use binaural delta I. |
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Edition |
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0735-7044 |
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Notes |
PMID:3954885 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
5634 |
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