The Experts below are selected from a list of 16860 Experts worldwide ranked by ideXlab platform
Richard Mooney - One of the best experts on this subject based on the ideXlab platform.
-
Neural correlates of categorical perception in learned Vocal Communication
Nature neuroscience, 2009Co-Authors: Jonathan F. Prather, Stephen Nowicki, Rindy C. Anderson, Susan Peters, Richard MooneyAbstract:The division of continuously variable acoustic signals into discrete perceptual categories is a fundamental feature of Vocal Communication, including human speech. Despite the importance of categorical perception to learned Vocal Communication, the neural correlates underlying this phenomenon await identification. We found that individual sensorimotor neurons in freely behaving swamp sparrows expressed categorical auditory responses to changes in note duration, a learned feature of their songs, and that the neural response boundary accurately predicted the categorical perceptual boundary measured in field studies of the same sparrow population. Furthermore, swamp sparrow populations that learned different song dialects showed different categorical perceptual boundaries that were consistent with the boundary being learned. Our results extend the analysis of the neural basis of perceptual categorization into the realm of Vocal Communication and advance the learned Vocalizations of songbirds as a model for investigating how experience shapes categorical perception and the activity of categorically responsive neurons.
-
Precise auditory–Vocal mirroring in neurons for learned Vocal Communication
Nature, 2008Co-Authors: Jonathan F. Prather, Stephen Nowicki, Susan Peters, Richard MooneyAbstract:Brain mechanisms for Communication must establish a correspondence between sensory and motor codes used to represent the signal. One idea is that this correspondence is established at the level of single neurons that are active when the individual performs a particular gesture or observes a similar gesture performed by another individual. Although neurons that display a precise auditory-Vocal correspondence could facilitate Vocal Communication, they have yet to be identified. Here we report that a certain class of neurons in the swamp sparrow forebrain displays a precise auditory-Vocal correspondence. We show that these neurons respond in a temporally precise fashion to auditory presentation of certain note sequences in this songbird's repertoire and to similar note sequences in other birds' songs. These neurons display nearly identical patterns of activity when the bird sings the same sequence, and disrupting auditory feedback does not alter this singing-related activity, indicating it is motor in nature. Furthermore, these neurons innervate striatal structures important for song learning, raising the possibility that singing-related activity in these cells is compared to auditory feedback to guide Vocal learning.
-
precise auditory Vocal mirroring in neurons for learned Vocal Communication
Nature, 2008Co-Authors: Jonathan F. Prather, Stephen Nowicki, Susan Peters, Richard MooneyAbstract:Brain mechanisms for Communication must establish a correspondence between sensory and motor codes used to represent the signal. One idea is that this correspondence is established at the level of single neurons that are active when the individual performs a particular gesture or observes a similar gesture performed by another individual. Although neurons that display a precise auditory-Vocal correspondence could facilitate Vocal Communication, they have yet to be identified. Here we report that a certain class of neurons in the swamp sparrow forebrain displays a precise auditory-Vocal correspondence. We show that these neurons respond in a temporally precise fashion to auditory presentation of certain note sequences in this songbird's repertoire and to similar note sequences in other birds' songs. These neurons display nearly identical patterns of activity when the bird sings the same sequence, and disrupting auditory feedback does not alter this singing-related activity, indicating it is motor in nature. Furthermore, these neurons innervate striatal structures important for song learning, raising the possibility that singing-related activity in these cells is compared to auditory feedback to guide Vocal learning.
E. Sue Savage-rumbaugh - One of the best experts on this subject based on the ideXlab platform.
-
Vocal Communication as a function of differential rearing experiences inPan paniscus: A preliminary report
International Journal of Primatology, 1991Co-Authors: William D. Hopkins, E. Sue Savage-rumbaughAbstract:There is little evidence of Vocal learning in nonhuman primates despite the well-documented abilities found in avian species. We describe the Vocal repertoire of five bonobos ( Pan paniscus ), four of which live in a seminatural environment. The fifth subject, Kanzi, has been reared with humans during the course of language training. The data indicated that the four bonobos living in a seminatural environment exhibit a variety of species-typical Vocalizations. In addition to producing all the species-typical Vocalization, Kanzi produced four structurally unique Vocalizations that were not heard among the other subjects. These data suggest that Kanzi has learned Vocalizations that are novel due to his unique rearing experience. Discussion is focused on the flexibility of Vocal Communication and Vocal comprehension in Pan paniscus .
-
Vocal Communication as a function of differential rearing experiences in Pan paniscus: A preliminary report
International Journal of Primatology, 1991Co-Authors: William D. Hopkins, E. Sue Savage-rumbaughAbstract:There is little evidence of Vocal learning in nonhuman primates despite the well-documented abilities found in avian species. We describe the Vocal repertoire of five bonobos (Pan paniscus), four of which live in a seminatural environment. The fifth subject, Kanzi, has been reared with humans during the course of language training. The data indicated that the four bonobos living in a seminatural environment exhibit a variety of species-typical Vocalizations. In addition to producing all the species-typical Vocalization, Kanzi produced four structurally unique Vocalizations that were not heard among the other subjects. These data suggest that Kanzi has learned Vocalizations that are novel due to his unique rearing experience. Discussion is focused on the flexibility of Vocal Communication and Vocal comprehension inPan paniscus.
Jonathan F. Prather - One of the best experts on this subject based on the ideXlab platform.
-
Neural correlates of categorical perception in learned Vocal Communication
Nature neuroscience, 2009Co-Authors: Jonathan F. Prather, Stephen Nowicki, Rindy C. Anderson, Susan Peters, Richard MooneyAbstract:The division of continuously variable acoustic signals into discrete perceptual categories is a fundamental feature of Vocal Communication, including human speech. Despite the importance of categorical perception to learned Vocal Communication, the neural correlates underlying this phenomenon await identification. We found that individual sensorimotor neurons in freely behaving swamp sparrows expressed categorical auditory responses to changes in note duration, a learned feature of their songs, and that the neural response boundary accurately predicted the categorical perceptual boundary measured in field studies of the same sparrow population. Furthermore, swamp sparrow populations that learned different song dialects showed different categorical perceptual boundaries that were consistent with the boundary being learned. Our results extend the analysis of the neural basis of perceptual categorization into the realm of Vocal Communication and advance the learned Vocalizations of songbirds as a model for investigating how experience shapes categorical perception and the activity of categorically responsive neurons.
-
Precise auditory–Vocal mirroring in neurons for learned Vocal Communication
Nature, 2008Co-Authors: Jonathan F. Prather, Stephen Nowicki, Susan Peters, Richard MooneyAbstract:Brain mechanisms for Communication must establish a correspondence between sensory and motor codes used to represent the signal. One idea is that this correspondence is established at the level of single neurons that are active when the individual performs a particular gesture or observes a similar gesture performed by another individual. Although neurons that display a precise auditory-Vocal correspondence could facilitate Vocal Communication, they have yet to be identified. Here we report that a certain class of neurons in the swamp sparrow forebrain displays a precise auditory-Vocal correspondence. We show that these neurons respond in a temporally precise fashion to auditory presentation of certain note sequences in this songbird's repertoire and to similar note sequences in other birds' songs. These neurons display nearly identical patterns of activity when the bird sings the same sequence, and disrupting auditory feedback does not alter this singing-related activity, indicating it is motor in nature. Furthermore, these neurons innervate striatal structures important for song learning, raising the possibility that singing-related activity in these cells is compared to auditory feedback to guide Vocal learning.
-
precise auditory Vocal mirroring in neurons for learned Vocal Communication
Nature, 2008Co-Authors: Jonathan F. Prather, Stephen Nowicki, Susan Peters, Richard MooneyAbstract:Brain mechanisms for Communication must establish a correspondence between sensory and motor codes used to represent the signal. One idea is that this correspondence is established at the level of single neurons that are active when the individual performs a particular gesture or observes a similar gesture performed by another individual. Although neurons that display a precise auditory-Vocal correspondence could facilitate Vocal Communication, they have yet to be identified. Here we report that a certain class of neurons in the swamp sparrow forebrain displays a precise auditory-Vocal correspondence. We show that these neurons respond in a temporally precise fashion to auditory presentation of certain note sequences in this songbird's repertoire and to similar note sequences in other birds' songs. These neurons display nearly identical patterns of activity when the bird sings the same sequence, and disrupting auditory feedback does not alter this singing-related activity, indicating it is motor in nature. Furthermore, these neurons innervate striatal structures important for song learning, raising the possibility that singing-related activity in these cells is compared to auditory feedback to guide Vocal learning.
William D. Hopkins - One of the best experts on this subject based on the ideXlab platform.
-
Vocal Communication as a function of differential rearing experiences inPan paniscus: A preliminary report
International Journal of Primatology, 1991Co-Authors: William D. Hopkins, E. Sue Savage-rumbaughAbstract:There is little evidence of Vocal learning in nonhuman primates despite the well-documented abilities found in avian species. We describe the Vocal repertoire of five bonobos ( Pan paniscus ), four of which live in a seminatural environment. The fifth subject, Kanzi, has been reared with humans during the course of language training. The data indicated that the four bonobos living in a seminatural environment exhibit a variety of species-typical Vocalizations. In addition to producing all the species-typical Vocalization, Kanzi produced four structurally unique Vocalizations that were not heard among the other subjects. These data suggest that Kanzi has learned Vocalizations that are novel due to his unique rearing experience. Discussion is focused on the flexibility of Vocal Communication and Vocal comprehension in Pan paniscus .
-
Vocal Communication as a function of differential rearing experiences in Pan paniscus: A preliminary report
International Journal of Primatology, 1991Co-Authors: William D. Hopkins, E. Sue Savage-rumbaughAbstract:There is little evidence of Vocal learning in nonhuman primates despite the well-documented abilities found in avian species. We describe the Vocal repertoire of five bonobos (Pan paniscus), four of which live in a seminatural environment. The fifth subject, Kanzi, has been reared with humans during the course of language training. The data indicated that the four bonobos living in a seminatural environment exhibit a variety of species-typical Vocalizations. In addition to producing all the species-typical Vocalization, Kanzi produced four structurally unique Vocalizations that were not heard among the other subjects. These data suggest that Kanzi has learned Vocalizations that are novel due to his unique rearing experience. Discussion is focused on the flexibility of Vocal Communication and Vocal comprehension inPan paniscus.
Darcy B. Kelley - One of the best experts on this subject based on the ideXlab platform.
-
Generation, Coordination, and Evolution of Neural Circuits for Vocal Communication
The Journal of neuroscience : the official journal of the Society for Neuroscience, 2020Co-Authors: Darcy B. Kelley, Irene H. Ballagh, Charlotte L. Barkan, Andrés Bendesky, Taffeta M. Elliott, Ben J. Evans, Ian C. Hall, Young Mi Kwon, Ursula Kwong-brown, Elizabeth C. LeiningerAbstract:In many species, Vocal Communication is essential for coordinating social behaviors including courtship, mating, parenting, rivalry, and alarm signaling. Effective Communication requires accurate production, detection, and classification of signals, as well as selection of socially appropriate responses. Understanding how signals are generated and how acoustic signals are perceived is key to understanding the neurobiology of social behaviors. Here we review our long-standing research program focused on Xenopus, a frog genus which has provided valuable insights into the mechanisms and evolution of vertebrate social behaviors. In Xenopus laevis, Vocal signals differ between the sexes, through development, and across the genus, reflecting evolutionary divergence in sensory and motor circuits that can be interrogated mechanistically. Using two ex vivo preparations, the isolated brain and Vocal organ, we have identified essential components of the Vocal production system: the sexually differentiated larynx at the periphery, and the hindbrain Vocal central pattern generator (CPG) centrally, that produce sex- and species-characteristic sound pulse frequencies and temporal patterns, respectively. Within the hindbrain, we have described how intrinsic membrane properties of neurons in the Vocal CPG generate species-specific Vocal patterns, how Vocal nuclei are connected to generate Vocal patterns, as well as the roles of neurotransmitters and neuromodulators in activating the circuit. For sensorimotor integration, we identified a key forebrain node that links auditory and Vocal production circuits to match socially appropriate Vocal responses to acoustic features of male and female calls. The availability of a well supported phylogeny as well as reference genomes from several species now support analysis of the genetic architecture and the evolutionary divergence of neural circuits for Vocal Communication. Xenopus thus provides a vertebrate model in which to study Vocal Communication at many levels, from physiology, to behavior, and from development to evolution. As one of the most comprehensively studied phylogenetic groups within vertebrate Vocal Communication systems, Xenopus provides insights that can inform social Communication across phyla.
-
The Xenopus Amygdala Mediates Socially Appropriate Vocal Communication Signals
The Journal of neuroscience : the official journal of the Society for Neuroscience, 2013Co-Authors: Ian C. Hall, Irene H. Ballagh, Darcy B. KelleyAbstract:Social interaction requires that relevant sensory information is collected, classified, and distributed to the motor areas that initiate an appropriate behavioral response. Vocal exchanges, in particular, depend on linking auditory processing to an appropriate motor expression. Because of its role in integrating sensory information for the purpose of action selection, the amygdala has been implicated in social behavior in many mammalian species. Here, we show that two nuclei of the extended amygdala play essential roles in Vocal Communication in the African clawed frog, Xenopus laevis. Transport of fluorescent dextran amines identifies the X. laevis central amygdala (CeA) as a target for ascending auditory information from the central thalamic nucleus and as a major afferent to the Vocal pattern generator of the hindbrain. In the isolated (ex vivo) brain, electrical stimulation of the CeA, or the neighboring bed nucleus of the stria terminalis (BNST), initiates bouts of fictive calling. In vivo, lesioning the CeA of males disrupts the production of appropriate Vocal responses to females and to broadcasts of female calls. Lesioning the BNST in males produces an overall decrease in calling behavior. Together, these results suggest that the anuran CeA evaluates the valence of acoustic cues and initiates socially appropriate Vocal responses to Communication signals, whereas the BNST plays a role in the initiation of Vocalizations.
-
Neurobiology of Vocal Communication: mechanisms for sensorimotor integration and Vocal patterning.
Current opinion in neurobiology, 2010Co-Authors: Darcy B. Kelley, Andrew H. BassAbstract:This review will focus on recent developments in the sensorimotor integration of Vocal Communication. Two broad themes are emphasized: the evolution of Vocal production and perception, and the role of social context. Advances include: a proposal for the emergence of Vocal patterning during vertebrate evolution, the role of sensory mechanisms such as categorical perception in decoding Communication signals, contributions of sensorimotor integration phenomena including mirror neurons and Vocal learning, and mechanisms of hormone-dependent plasticity in both auditory and Vocal systems. Transcriptional networks activated in humans but not in chimps by the FoxP2 gene suggest molecular mechanisms underlying Vocal gestures and the emergence of human language.
-
Vocal Communication in frogs
Current opinion in neurobiology, 2004Co-Authors: Darcy B. KelleyAbstract:The robust nature of Vocal Communication in frogs has long attracted the attention of natural philosophers and their biologically inclined successors. Each frog species produces distinctive calls that facilitate pre-mating reproductive isolation and thus speciation. In many terrestrial species, a chorus of simultaneously calling males attracts females to breeding sites; reproductive females then choose and locate one male, using distinctive acoustic cues. Males compete with each other Vocally and sometimes physically as well. Anuran acoustic signaling systems are thus subject to the strong pressures of sexual selection. We are beginning to understand the ways in which Vocal signals are produced and decoded by the nervous system and the roles of neurally active hormones in both processes.
-
Vocal Communication between male Xenopus laevis
Animal behaviour, 2003Co-Authors: Martha L. Tobias, Candace Barnard, Robert O'hagan, Sam Horng, Masha Rand, Darcy B. KelleyAbstract:This study focuses on the role of male-male Vocal Communication in the reproductive repertoire of the South African clawed frog, Xenopus laevis. Six male and two female call types were recorded from native ponds in the environs of Cape Town, South Africa. These include all call types previously recorded in the laboratory as well as one previously unidentified male call: chirping. The amount of calling and the number of call types increased as the breeding season progressed. Laboratory recordings indicated that all six male call types were directed to males; three of these were directed to both sexes and three were directed exclusively to males. Both female call types were directed exclusively to males. The predominant call type, in both field and laboratory recordings, was the male advertisement call. Sexual state affected male Vocal behaviour. Male pairs in which at least one male was sexually active (gonadotropin injected) produced all call types, whereas pairs of uninjected males rarely called. Some call types were strongly associated with a specific behaviour and others were not. Clasped males always growled and clasping males typically produced amplectant calls or chirps; males not engaged in clasping most frequently advertised. The amount of advertising produced by one male was profoundly affected by the presence of another male. Pairing two sexually active males resulted in suppression of advertisement calling in one; suppression was released when males were isolated after pairing. Vocal dominance was achieved even in the absence of physical contact (clasping). We suggest that X. laevis males gain a reproductive advantage by competing for advertisement privileges and by Vocally suppressing neighbouring males.
