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QUINPIROLE-INDUCED SENSITIZATION TO NOISY/SPARSE PERIODIC INPUT: TEMPORAL SYNCHRONIZATION AS A COMPONENT OF OBSESSIVE-COMPULSIVE DISORDER
被引:32
作者:
Gu, B. M.
[1
]
Cheng, R. K.
[1
]
Yin, B.
[1
]
Meck, W. H.
[1
]
机构:
[1] Duke Univ, Dept Psychol & Neurosci, Durham, NC 27708 USA
来源:
关键词:
duration discrimination;
cyclic behavior;
interval timing;
rhythm production;
timing and time perception;
CLOCK-SPEED;
INTERNAL CLOCK;
DORSOMEDIAL STRIATUM;
AGONIST QUINPIROLE;
NUCLEUS-ACCUMBENS;
NEURAL MECHANISMS;
CHECKING BEHAVIOR;
RECEPTOR-BINDING;
TIMING BEHAVIOR;
WORKING-MEMORY;
D O I:
10.1016/j.neuroscience.2011.01.048
中图分类号:
Q189 [神经科学];
学科分类号:
071006 ;
摘要:
Quinpirole-sensitized rats were tested on a discrete-trials 40-s peak-interval procedure using lever pressing as the instrumental response. Although there was no evidence of rhythmical activity in lever pressing, periodic output was observed in a secondary response (food-cup entries) during the inter-trial interval following the delivery of reinforcement on fixed-interval trials, but not during unreinforced probe trials. This repetitive pattern of behavior with a 40-s period points to the primacy of reinforcement as a time marker and an increased tendency to synchronize to noisy and sparse periodic input as a result of reduced inhibitory control in cortico-striatal circuits following chronic quinpirole administration. Parallels between quinpirole-induced rhythmical behavior and the repetitive motor habits frequently observed in obsessive-compulsive disorder are discussed. (C) 2011 IBRO. Published by Elsevier Ltd. All rights reserved.
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页码:143 / 150
页数:8
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