结果贬值在时间控制中的持续时间特异性效应，对训练量的敏感性存在差异。
Duration-specific effects of outcome devaluation in temporal control are differentially sensitive to amount of training.
作者信息
Araiba Sho, El Massioui Nicole, Brown Bruce L, Doyère Valérie
机构信息
Graduate Center of the City University of New York, New York, New York 10016, USA.
Institut des Neurosciences Paris-Saclay (Neuro-PSI), UMR 9197, Université Paris Sud, CNRS, Université Paris Saclay, Orsay 91405, France.
出版信息
Learn Mem. 2018 Nov 15;25(12):629-633. doi: 10.1101/lm.047878.118. Print 2018 Dec.
This study demonstrates that overtraining in temporal discrimination modifies temporal stimulus control in a bisection task and produces habitual responding, as evidenced through insensitivity to food devaluation. Rats were trained or overtrained in a 2- versus 8-sec temporal discrimination task, with each duration associated with a lever (left or right) and food (grain or sucrose). Overtraining produced a leftward shift in the bisection point. Devaluation treatment induced a differential loss of responding depending on stimulus duration (short versus long) and the level of training (training versus overtraining). The relationships between timing behavior and habitual behavior are discussed.
本研究表明，时间辨别任务中的过度训练会改变二分任务中的时间刺激控制，并产生习惯性反应，这一点可通过对食物贬值不敏感得到证明。大鼠在2秒对8秒的时间辨别任务中接受训练或过度训练，每个时长与一个杠杆（左或右）及食物（谷物或蔗糖）相关联。过度训练使二分点向左偏移。贬值处理根据刺激时长（短与长）和训练水平（训练与过度训练）导致反应的差异性丧失。本文讨论了时间行为与习惯性行为之间的关系。
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