McCasland, James S. and Konishi, Masukazu (1981) Interaction between Auditory and Motor Activities in an Avian Song Control Nucleus. Proceedings of the National Academy of Sciences of the United States of America, 78 (12). pp. 7815-7819. ISSN 0027-8424 http://resolver.caltech.edu/CaltechAUTHORS:MCCpnas81
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Discrete telencephalic nuclei HVc (hyperstriatum ventrale, pars caudale) and RA (nucleus robustus archistriatalis) have been implicated by lesion studies in the control of vocalization in songbirds. We demonstrate directly the role of HVc in vocalization by presenting neuronal recordings taken from HVc of singing birds. Intracellular recordings from anesthetized birds have shown that many neurons in HVc respond to auditory stimuli. We confirm this result in the extracellular recordings from awake-behaving birds and further demonstrate responses of HVc neurons to playback of the bird's own song. The functional significance of these reponses is not yet clear, but behavioral studies show that auditory feedback plays a crucial role in the development of normal song. We show that the song-correlated temporal pattern of neural activity persists even in the deaf bird. Furthermore, we show that in the normal bird, the activity pattern correlated with production of certain song elements can be clearly distinguished from the pattern of auditory responses to the same song elements. This result implies that an interaction occurs in HVc of the singing bird between motor and auditory activity. Through experiments involving playback of sound while the bird is singing, we show that the interaction consists of motor inhibition of auditory activity in HVc and that this inhibition decays slowly over a period of seconds after the song terminates.
|Additional Information:||Copyright © 1981 by the National Academy of Sciences Communicated by Roger W. Sperry, August 24, 1981 We wish to thank Steve Petersen and Andy Moiseff for critical comments on the manuscript. This work was supported by a National Institutes of Health predoctoral training grant (to J.S.M.) and by a grant from the Pew Memorial Trust. The publication costs of this article were defrayed in part by page charge payment. This article must therefore be hereby marked "advertisement" in accordance with 18 U. S. C. §1734 solely to indicate this fact.|
|Subject Keywords:||motor system; sensorimotor integration; avian vocalizations; chronic recording; learning and memory|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||24 Dec 2005|
|Last Modified:||26 Dec 2012 08:43|
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