CIRCADIAN FOOD-ANTICIPATORY ACTIVITY - FORMAL MODELS AND PHYSIOLOGICAL-MECHANISMS

被引:702
作者
MISTLBERGER, RE
机构
[1] Department of Psychology, Simon Fraser University, Burnaby
基金
加拿大自然科学与工程研究理事会;
关键词
FOOD RESTRICTION; CIRCADIAN RHYTHMS; ENTRAINMENT; LEARNING; FORAGING; WHEEL RUNNING;
D O I
10.1016/0149-7634(94)90023-X
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Rats and other species exhibit food-anticipatory activity (FAA) to daily mealtime under circadian (24 h) food access schedules. A critical review of several explanatory models indicates that hourglass clocks and associative learning processes are inadequate to explain many properties of FAA in intact and suprachiasmatic nuclei ablated rodents. A computational learning model, involving circadian clock consultation and phase memory, accounts for some but not all of these properties. An entrainment model, invoking separate, compound food- and light-entrainable oscillators, provides a more complete account of FAA. However, FAA may be simulated best by a model that combines oscillator entrainment with clock consultation and memory for circadian phase. Species as diverse as bees, birds, and mammals appear to share many features of FAA in common; differences may be explained in terms of oscillator organization and the ability to represent multiple circadian phases memorially. Physiological mechanisms of FAA are largely unknown; strategies for localization of entrainment pathways and oscillators, and a modest data base, are reviewed.
引用
收藏
页码:171 / 195
页数:25
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