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Hunger-driven motivational state competition.
Neuron 92, 187-201 (2016)
Behavioral choice is ubiquitous in the animal kingdom and is central to goal-oriented behavior. Hypothalamic Agouti-related peptide (AgRP) neurons are critical regulators of appetite. Hungry animals, bombarded by multiple sensory stimuli, are known to modify their behavior during times of caloric need, rapidly adapting to a consistently changing environment. Utilizing ARC AgRP neurons as an entry point, we analyzed the hierarchical position of hunger related to rival drive states. Employing a battery of behavioral assays, we found that hunger significantly increases its capacity to suppress competing motivational systems, such as thirst, anxiety-related behavior, innate fear, and social interactions, often only when food is accessible. Furthermore, real-time monitoring of ARC AgRP activity revealed time-locked responses to conspecific investigation in addition to food presentation, further establishing that, even at the level of ARC AgRP neurons, choices are remarkably flexible computations, integrating internal state, external factors, and anticipated yield.
Impact Factor
Scopus SNIP
Altmetric
13.974
3.404
Anmerkungen
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Feeding-behavior; Neural Circuits; Neuropeptide-y; Consummatory Behaviors; Lateral Hypothalamus; Dopamine Neurons; Mice; Nucleus; Agrp; Activation
Sprache
Veröffentlichungsjahr
2016
HGF-Berichtsjahr
0
ISSN (print) / ISBN
0896-6273
e-ISSN
1097-4199
Zeitschrift
Neuron
Quellenangaben
Band: 92,
Heft: 1,
Seiten: 187-201
Verlag
Cell Press
Verlagsort
Cambridge, Mass.
Begutachtungsstatus
Peer reviewed
WOS ID
WOS:000386760700020
Erfassungsdatum
2016-11-30