Projection neurons within a vocal motor pathway are born during song learning in zebra finches
- 1 July 1988
- journal article
- Published by Springer Science and Business Media LLC in Nature
- Vol. 334 (6178), 149-151
- https://doi.org/10.1038/334149a0
Abstract
Many birds learn song during a restricted 'sensitive' period. Juveniles memorize a song model, and then learn the pattern of muscle contractions necessary to reproduce the song. Of the neural changes accompanying avian song learning, perhaps the most remarkable is the production of new neurons which are inserted into the hyperstriatum ventralis pars caudalis (HVc), a region critical for song production. We report here that in young male zebra finches many of the new neurons incorporated into the HVc innervate the robust nucleus of the archistriatum (RA) which projects to motor neurons controlling the vocal musculature. Furthermore, far fewer of these new neurons are incorporated into the HVc of either adult males that are beyond the sensitive learning period, or young females (who do not develop song). Thus, a major portion of the vocal motor pathway is actually created during song learning. This may enable early sensory experience and vocal practice to not only modify existing neuronal circuits, but also shape the insertion and initial synaptic contacts of neurons controlling adult song.Keywords
This publication has 12 references indexed in Scilit:
- Sexual differentiation of androgen accumulation within the zebra finch brain through selective cell loss and additionJournal of Comparative Neurology, 1987
- Changes in neuronal number, density and size account for increases in volume of song-control nuclei during song development in zebra finchesNeuroscience Letters, 1986
- Song learning in zebra finches: some effects of song model availability on what is learnt and whenAnimal Behaviour, 1985
- Cells born in adult canary forebrain are local interneuronsJournal of Neuroscience, 1985
- Neuronal growth, atrophy and death in a sexually dimorphic song nucleus in the zebra finch brainNature, 1985
- Birdsong as a Model in Which to Study Brain Processes Related to LearningOrnithological Applications, 1984
- Neuronal production, migration, and differentiation in a vocal control nucleus of the adult female canary brain.Proceedings of the National Academy of Sciences of the United States of America, 1983
- Auditory responses in the zebra finch's motor system for songBrain Research, 1981
- Sexual Dimorphism in Vocal Control Areas of the Songbird BrainScience, 1976
- Central control of song in the canary, Serinus canariusJournal of Comparative Neurology, 1976