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Titolo:
Song selectivity and sensorimotor signals in vocal learning and production
Autore:
Solis, MM; Brainard, MS; Hessler, NA; Doupe, AJ;
Indirizzi:
Univ Calif San Francisco, Keck Ctr Integrat Neurosci, San Francisco, CA 94143 USA Univ Calif San Francisco San Francisco CA USA 94143 ancisco, CA 94143 USA Univ Calif San Francisco, Dept Physiol, San Francisco, CA 94143 USA Univ Calif San Francisco San Francisco CA USA 94143 ancisco, CA 94143 USA Univ Calif San Francisco, Dept Psychiat, San Francisco, CA 94143 USA Univ Calif San Francisco San Francisco CA USA 94143 ancisco, CA 94143 USA Univ Washington, Dept Psychol, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 Dept Psychol, Seattle, WA 98195 USA
Titolo Testata:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
fascicolo: 22, volume: 97, anno: 2000,
pagine: 11836 - 11842
SICI:
0027-8424(20001024)97:22<11836:SSASSI>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADULT ZEBRA FINCHES; ANTERIOR FOREBRAIN; NEURONAL-ACTIVITY; REWARD EXPECTATION; AUDITORY-FEEDBACK; PRIMATE STRIATUM; CONTROL NUCLEUS; NEURAL ACTIVITY; BASAL GANGLIA; HUMAN SPEECH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Doupe, AJ Univ Calif San Francisco, Keck Ctr Integrat Neurosci, San Francisco, CA 94143 USA Univ Calif San Francisco San Francisco CA USA 94143 A 94143 USA
Citazione:
M.M. Solis et al., "Song selectivity and sensorimotor signals in vocal learning and production", P NAS US, 97(22), 2000, pp. 11836-11842

Abstract

Bird song, like human speech, is a learned vocal behavior that requires auditory feedback. Both as juveniles, while they learn to sing,and as adults,songbirds use auditory feedback to compare their own vocalizations with aninternal model of a target song. Here we describe experiments that explorea role for the songbird anterior forebrain pathway (AFP), a basal ganglia-forebrain circuit, in evaluating song feedback and modifying vocal output. First, neural recordings in anesthetized, juvenile birds show that single AFP neurons are specialized to process the song stimuli that are compared during sensorimotor learning. AFP neurons are tuned to both: the bird's own song and the tutor song, even when these stimuli are manipulated to be very different from each other, Second, behavioral experiments in adult birds demonstrate that lesions to the AFP block the deterioration of song that normally follows deafening. This observation suggests that deafening results: in an instructive signal, indicating a mismatch between feedback and the internal song model, and that the AFP is involved in generating or transmitting this instructive signal. Finally, neural recordings from behaving birds reveal robust singing-related activity in the AFP. This activity is likely to originate from premotor areas and could be modulated by auditory feedbackof the bird's own voice. One possibility is that this activity represents an efference copy, predicting the sensory consequences of motor commands. Overall, these studies illustrate that sensory and motor processes are highly interrelated in this circuit devoted to vocal learning, as: is true for brain areas involved in speech.

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Documento generato il 19/01/20 alle ore 20:20:08