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Front Behav Neurosci. 2012 Nov 27;6:83. doi: 10.3389/fnbeh.2012.00083. eCollection 2012.

Food entrainment: major and recent findings.

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1
Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido Mossoró, Brazil ; Programa de Pós-Graduação em Psicobiologia, Universidade Federal do Rio Grande do Norte Natal, Brazil.

Abstract

Mammals exhibit daily anticipatory activity to cycles of food availability. Studies on such food anticipatory activity (FAA) have been conducted mainly in nocturnal rodents. They have identified FAA as the behavioral output of a food entrained oscillator (FEO), separate of the known light entrained oscillator (LEO) located in the suprachiasmatic nucleus (SCN) of hypothalamus. Here we briefly review the main characteristics of FAA. Also, we present results on four topics of food anticipation: (1) possible input signals to FEO, (2) FEO substrate, (3) the importance of canonical clock genes for FAA, and (4) potential practical applications of scheduled feeding. This mini review is intended to introduce the subject of food entrainment to those unfamiliar with it but also present them with relevant new findings on the issue.

KEYWORDS:

circadian rhythm; food anticipatory activity (FAA); food entrained oscillator (FEO); neuronal activation; scheduled feeding

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