Conjunction of vocal production and perception regulates expression of the immediate early gene ZENK in a novel cortical region of songbirds.

Journal of Neurophysiology
S W BottjerDaniel Chang

Abstract

The cortical nucleus LMAN (lateral magnocellular nucleus of the anterior nidopallium) provides the output of a basal ganglia pathway that is necessary for acquisition of learned vocal behavior during development in songbirds. LMAN is composed of two subregions, a core and a surrounding shell, that give rise to independent pathways that traverse the forebrain in parallel. The LMAN(shell) pathway forms a recurrent loop that includes a cortical region, the dorsal region of the caudolateral nidopallium (dNCL), hitherto unknown to be involved with learned vocal behavior. Here we show that vocal production strongly induces the IEG product ZENK in dNCL of zebra finches. Hearing tutor song while singing is more effective at inducing expression in dNCL of juvenile birds during the auditory-motor integration stage of vocal learning than is hearing conspecific song. In contrast, hearing conspecific song is relatively more effective at inducing expression in adult birds, regardless of whether they are producing song. Furthermore, ZENK+ neurons in dNCL include projection neurons that are part of the LMAN(shell) recurrent loop and a high proportion of dNCL projection neurons express ZENK in singing juvenile birds that hear tutor song. Thus j...Continue Reading

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Citations

Sep 6, 2013·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Jennifer M Achiro, Sarah W Bottjer
Jul 7, 2017·The Journal of Comparative Neurology·Amy K Paterson, Sarah W Bottjer
Dec 13, 2018·Journal of Neurophysiology·Rachel C Yuan, Sarah W Bottjer
Mar 6, 2021·Current Opinion in Neurobiology·Parker Rundstrom, Nicole Creanza

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