Identification of a brain center whose activity discriminates a choice behavior in zebrafish

Billy Y.B. Lau, Priya Mathur, Georgianna G. Gould, Su Guo

Producción científica: Articlerevisión exhaustiva

161 Citas (Scopus)

Resumen

The ability to make choices and carry out appropriate actions is critical for individual survival and well-being. Choice behaviors, from hard-wired to experience-dependent, have been observed across the animal kingdom. Although differential engagement of sensory neuronal pathways is a known mechanism, neurobiological substrates in the brain that underlie choice making downstream of sensory perception are not well understood. Here, we report a behavioral paradigm in zebrafish in which a half-light/half-dark visual image evokes an innate choice behavior, light avoidance. Neuronal activity mapping using the immediate early gene c-fos reveals the engagement of distinct brain regions, including the medial zone of the dorsal telencephalic region (Dm) and the dorsal nucleus of the ventral telencephalic area (Vd), the teleost anatomical homologs of the mammalian amygdala and striatum, respectively. In animals that were subjected to the identical sensory stimulus but displayed little or no avoidance, strikingly, the Dm and Vd were not engaged, despite similar levels of activation in the brain nuclei involved in visual processing. Based on these findings and previous connectivity data, we propose a neural circuitry model in which the Dm serves as a brain center, the activity of which predicates this choice behavior in zebrafish.

Idioma originalEnglish (US)
Páginas (desde-hasta)2581-2586
Número de páginas6
PublicaciónProceedings of the National Academy of Sciences of the United States of America
Volumen108
N.º6
DOI
EstadoPublished - feb 8 2011

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