Progressive anticipation in behavior and brain activation of rats exposed to scheduled daily palatable food

Highlights • Anticipation of a daily scheduled palatable meal is observed as early as day 3 of the entrainment protocol. • Rats exhibit increased interaction and effort like behaviors to obtain a piece of chocolate out of a wire-mesh box. • The prefrontal cortex exhibits on day 3 increased c-Fos on...

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Bibliographic Details
Published in:Neuroscience 2014-12, Vol.281, p.44-53
Main Authors: Blancas, A, González-García, S.D, Rodríguez, K, Escobar, C
Format: Article
Language:English
Subjects:
accumbens
Animals
Anticipation, Psychological - physiology
Arcuate Nucleus of Hypothalamus - metabolism
Behavior, Animal - physiology
Biological and medical sciences
Chocolate
Chronobiology
Circadian Rhythm - physiology
circadian rhythms
Feeding Behavior - physiology
food anticipatory activity
food entrainment
Fundamental and applied biological sciences. Psychology
Male
Neurology
Nucleus Accumbens - metabolism
Piriform Cortex - metabolism
prefrontal cortex
Prefrontal Cortex - metabolism
Proto-Oncogene Proteins c-fos - metabolism
Rats
Rats, Wistar
Reward
Time Factors
Vertebrates: anatomy and physiology, studies on body, several organs or systems
Vertebrates: nervous system and sense organs
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Summary:Highlights • Anticipation of a daily scheduled palatable meal is observed as early as day 3 of the entrainment protocol. • Rats exhibit increased interaction and effort like behaviors to obtain a piece of chocolate out of a wire-mesh box. • The prefrontal cortex exhibits on day 3 increased c-Fos on anticipating a palatable meal. • Behavioral and brain activation anticipating a palatable meal appears gradually suggesting a learned time-keeping process.
ISSN:0306-4522
1873-7544
DOI:10.1016/j.neuroscience.2014.09.036