Please use this identifier to cite or link to this item: https://repositorio.ufrn.br/jspui/handle/123456789/23368
Title: Unstable neurons underlie a stable learned behavior
Authors: Liberti III, William A
Markowitz, Jeffrey E
Perkins, L Nathan
Liberti, Derek C
Leman, Daniel P
Guitchounts, Grigori
Velho, Tarciso
Kotton, Darrell N
Lois, Carlos
Gardner, Timothy J
Keywords: Birdsong;Premotor cortex
Issue Date: Oct-2016
Portuguese Abstract: Motor skills can be maintained for decades, but the biological basis of this memory persistence remains largely unknown. The zebra finch, for example, sings a highly stereotyped song that is stable for years, but it is not known whether the precise neural patterns underlying song are stable or shift from day to day. Here we demonstrate that the population of projection neurons coding for song in the premotor nucleus, HVC, change from day to day. The most dramatic shifts occur over intervals of sleep. In contrast to the transient participation of excitatory neurons, ensemble measurements dominated by inhibition persist unchanged even after damage to downstream motor nerves. These observations offer a principle of motor stability: spatiotemporal patterns of inhibition can maintain a stable scaffold for motor dynamics while the population of principal neurons that directly drive behavior shift from one day to the next.
URI: https://repositorio.ufrn.br/jspui/handle/123456789/23368
Appears in Collections:ICe - Artigos publicados em periódicos

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