Equine and Animal Cognition Reference Database -- Query Results

	Equine and Animal Cognition Reference Database Home \| Show All \| Simple Search \| Advanced Search	Login Quick Search: Field: contains: ...
	11-20 of 32 records found matching your query:

Search & Display Options

Select All Deselect All

<< 1 2 3 4 >>

List View

Citations

Details

	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.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0001-4966	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:6736426			Approved	no
	Call Number	refbase @ user @			Serial	703
Permanent link to this record



	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	The representation of social relations by monkeys			Type	Journal Article
	Year	1990	Publication	Cognition	Abbreviated Journal	Cognition
	Volume	37	Issue	1-2	Pages	167-196
	Keywords	Animals; Cercopithecus aethiops/psychology; Concept Formation; Dominance-Subordination; Female; Macaca fascicularis/psychology; Male; Social Behavior; *Social Environment
	Abstract	Monkeys recognize the social relations that exist among others in their group. They know who associates with whom, for example, and other animals' relative dominance ranks. In addition, monkeys appear to compare types of social relations and make same/different judgments about them. In captivity, longtailed macaques (Macaca fascicularis) trained to recognize the relation between one adult female and her offspring can identify the same relation among other mother-offspring pairs, and distinguish this relation from bonds between individuals who are related in a different way. In the wild, if a vervet monkey (Cercopithecus aethiops) has seen a fight between a member of its own family and a member of Family X, this increases the likelihood that it will act aggressively toward another member of Family X. Vervets act as if they recognize some similarity between their own close associates and the close associates of others. To make such comparisons the monkeys must have some way of representing the properties of social relationships. We discuss the adaptive value of such representations, the information they contain, their structure, and their limitations.
	Address	Department of Anthropology, University of Pennsylvania, Philadelphia 19104
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0010-0277	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:2269006			Approved	no
	Call Number	refbase @ user @			Serial	702
Permanent link to this record



	Author	Seyfarth, R.M.; Cheney, D.L.
	Title	Meaning and mind in monkeys			Type	Journal Article
	Year	1992	Publication	Scientific American	Abbreviated Journal	Sci Am
	Volume	267	Issue	6	Pages	122-128
	Keywords	Animals; Behavior, Animal; Female; Haplorhini; Male; Speech; Vocalization, Animal
	Abstract
	Address	University of Pennsylvania
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0036-8733	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:1439710			Approved	no
	Call Number	refbase @ user @			Serial	701
Permanent link to this record



	Author	Owren, M.J.; Dieter, J.A.; Seyfarth, R.M.; Cheney, D.L.
	Title	Vocalizations of rhesus (Macaca mulatta) and Japanese (M. fuscata) macaques cross-fostered between species show evidence of only limited modification			Type	Journal Article
	Year	1993	Publication	Developmental psychobiology	Abbreviated Journal	Dev Psychobiol
	Volume	26	Issue	7	Pages	389-406
	Keywords	Animals; Animals, Newborn; Behavior, Animal; Discrimination Learning; Environment; Female; Macaca; Macaca mulatta; Male; Sound Spectrography; *Vocalization, Animal
	Abstract	Two rhesus and two Japanese macaque infants were cross-fostered between species in order to study the effects of auditory experience on vocal development. Both the cross-fostered and normally raised control subjects were observed over the first 2 years of life and their vocalizations were tape-recorded. We classified 8053 calls by ear, placed each call in one of six acoustic categories, and calculated the rates at which different call-types were used in different social contexts. Species differences were found in the use of “coo” and “gruff” vocalizations among control subjects. Japanese macaques invariably produced coos almost exclusively. In contrast, rhesus macaques produced a mixture of coos and gruffs and showed considerable interindividual variation in the relative use of one call type or the other. Cross-fostered Japanese macaques adhered to their species-typical behavior, rarely using gruffs. Cross-fostered rhesus subjects also exhibited species-typical behavior in many contexts, but in some situations produced coos and gruffs at rates that were intermediate between those shown by normally raised animals of the two species. This outcome suggests that environmentally mediated modification of vocal behavior may have occurred, but that the resulting changes were quite limited.
	Address	California Regional Primate Research Center, University of California, Davis
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0012-1630	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:8270122			Approved	no
	Call Number	refbase @ user @			Serial	700
Permanent link to this record



	Author	Owren, M.J.; Seyfarth, R.M.; Cheney, D.L.
	Title	The acoustic features of vowel-like grunt calls in chacma baboons (Papio cyncephalus ursinus): implications for production processes and functions			Type	Journal Article
	Year	1997	Publication	The Journal of the Acoustical Society of America	Abbreviated Journal	J Acoust Soc Am
	Volume	101	Issue	5 Pt 1	Pages	2951-2963
	Keywords	Animals; Female; Papio; Sound Spectrography; Vocalization, Animal
	Abstract	The acoustic features of 216 baboon grunts were investigated through analysis of field-recorded calls produced by identified females in known contexts. Analyses addressed two distinct questions: whether the acoustic features of these tonal sounds could be characterized using a source-filter approach and whether the acoustic features of grunts varied by individual caller and social context. Converging evidence indicated that grunts were produced through a combination of periodic laryngeal vibration and a stable vocal tract filter. Their acoustic properties closely resembled those of prototypical human vowel sounds. In general, variation in the acoustic features of the grunts was more strongly related to caller identity than to the social contexts of calling. However, two acoustic parameters, second formant frequency and overall spectral tilt, did vary consistently depending on whether the caller was interacting with an infant or participating in a group move. Nonetheless, in accordance with the general view that identity cueing is a compelling function in animal communication, it can be concluded that much of the observed variability in grunt acoustics is likely to be related to this aspect of signaling. Further, cues related to vocal tract filtering appear particularly likely to play an important role in identifying individual calling animals.
	Address	Department of Psychology, Reed College, Portland, Oregon 97202, USA. michael.owren@reed.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0001-4966	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9165741			Approved	no
	Call Number	refbase @ user @			Serial	698
Permanent link to this record



	Author	Rendall, D.; Cheney, D.L.; Seyfarth, R.M.
	Title	Proximate factors mediating “contact” calls in adult female baboons (Papio cynocephalus ursinus) and their infants			Type	Journal Article
	Year	2000	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	114	Issue	1	Pages	36-46
	Keywords	Animals; Animals, Wild; Botswana; Female; Maternal Behavior; Motivation; Orientation; Papio/psychology; Social Environment; Sound Spectrography; *Vocalization, Animal
	Abstract	“Contact” calls are widespread in social mammals and birds, but the proximate factors that motivate call production and mediate their contact function remain poorly specified. Field study of chacma baboons (Papio cynocephalus ursinus) revealed that contact barks in adult females were motivated by separation both from the group at large and from their dependent infants. A variety of social and ecological factors affect the probability of separation from either one or both. Results of simultaneous observations and a playback experiment indicate that the contact function of calling between mothers and infants was mediated by occasional maternal retrieval rather than coordinated call exchange. Mothers recognized the contact barks of their own infants and often were strongly motivated to locate them. However, mothers did not produce contact barks in reply unless they themselves were at risk of becoming separated from the group.
	Address	Department of Psychology, University of Pennsylvania, USA. d.rendall@uleth.ca
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10739310			Approved	no
	Call Number	refbase @ user @			Serial	695
Permanent link to this record



	Author	Fischer, J.; Cheney, D.L.; Seyfarth, R.M.
	Title	Development of infant baboons' responses to graded bark variants			Type	Journal Article
	Year	2000	Publication	Proceedings. Biological sciences / The Royal Society	Abbreviated Journal	Proc Biol Sci
	Volume	267	Issue	1459	Pages	2317-2321
	Keywords	Animal Communication; Animals; Behavior, Animal; Female; Male; Models, Psychological; Papio/growth & development/physiology; *Vocalization, Animal
	Abstract	We studied the development of infant baboons' (Papio cynocephalus ursinus) responses to conspecific 'barks' in a free-ranging population in the Okavango Delta, Botswana. These barks grade from tonal, harmonically rich calls into calls with a more noisy, harsh structure. Typically, tonal variants are given when the signaller is at risk of losing contact with the group or a particular individual ('contact barks'), whereas harsh variants are given in response to predators ('alarm barks'). We conducted focal observations and playback experiments in which we presented variants of barks recorded from resident adult females. By six months of age, infants reliably discriminated between typical alarm and contact barks and they responded more strongly to intermediate alarm calls than to typical contact barks. Infants of six months and older also recognized their mothers by voice. The ability to discriminate between different call variants developed with increasing age. At two and a half months of age, infants failed to respond at all, whereas at four months they responded irrespective of the call type that was presented. At six months, infants showed adult-like responses by responding strongly to alarm barks but ignoring contact barks. We concluded that infants gradually learn to attach the appropriate meaning to alarm and contact barks.
	Address	Department of Psychology, University of Pennsylvania, 3815 Walnut Street, Philadelphia, PA 19104, USA. fischerj@eva.mpg.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0962-8452	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11413649			Approved	no
	Call Number	refbase @ user @			Serial	694
Permanent link to this record



	Author	Seyfarth, R.M.; Cheney, D.L.
	Title	What are big brains for?			Type	Journal Article
	Year	2002	Publication	Proceedings of the National Academy of Sciences of the United States of America	Abbreviated Journal	Proc. Natl. Acad. Sci. U.S.A.
	Volume	99	Issue	7	Pages	4141-4142
	Keywords	Animals; Brain/anatomy & histology; Intelligence; Learning; Primates/anatomy & histology/psychology; Social Behavior
	Abstract
	Address	Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. seyfarth@psych.upenn.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0027-8424	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11929989			Approved	no
	Call Number	refbase @ user @			Serial	692
Permanent link to this record



	Author	Fischer, J.; Hammerschmidt, K.; Cheney, D.L.; Seyfarth, R.M.
	Title	Acoustic features of male baboon loud calls: influences of context, age, and individuality			Type	Journal Article
	Year	2002	Publication	The Journal of the Acoustical Society of America	Abbreviated Journal	J Acoust Soc Am
	Volume	111	Issue	3	Pages	1465-1474
	Keywords	Age Factors; Animal Communication; Animals; Individuality; Male; Papio; Social Environment; Sound Spectrography; Vocalization, Animal
	Abstract	The acoustic structure of loud calls (“wahoos”) recorded from free-ranging male baboons (Papio cynocephalus ursinus) in the Moremi Game Reserve, Botswana, was examined for differences between and within contexts, using calls given in response to predators (alarm wahoos), during male contests (contest wahoos), and when a male had become separated from the group (contact wahoos). Calls were recorded from adolescent, subadult, and adult males. In addition, male alarm calls were compared with those recorded from females. Despite their superficial acoustic similarity, the analysis revealed a number of significant differences between alarm, contest, and contact wahoos. Contest wahoos are given at a much higher rate, exhibit lower frequency characteristics, have a longer “hoo” duration, and a relatively louder “hoo” portion than alarm wahoos. Contact wahoos are acoustically similar to contest wahoos, but are given at a much lower rate. Both alarm and contest wahoos also exhibit significant differences among individuals. Some of the acoustic features that vary in relation to age and sex presumably reflect differences in body size, whereas others are possibly related to male stamina and endurance. The finding that calls serving markedly different functions constitute variants of the same general call type suggests that the vocal production in nonhuman primates is evolutionarily constrained.
	Address	Department of Psychology, University of Pennsylvania, Philadelphia 19104, USA. fischer@eva.mpg.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0001-4966	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11931324			Approved	no
	Call Number	refbase @ user @			Serial	691
Permanent link to this record



	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		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
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0066-4308	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:12359915			Approved	no
	Call Number	refbase @ user @			Serial	690
Permanent link to this record

Select All Deselect All

<< 1 2 3 4 >>

Details

CQL Search | Library Search | Show Record | Extract Citations

Help