Repeated spatial acquisition: effects of NMDA antagonists and morphine.

Repeated spatial acquisition: effects of NMDA antagonists and morphine.
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重复空间采集:NMDA 拮抗剂和吗啡的作用。

DOI:
10.1037//1064-1297.11.1.79
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发表时间:
2003
影响因子:
2.3
通讯作者:
Pitts,RaymondC
Pitts,RaymondC
中科院分区:
医学3区
文献类型:
--
作者:
Galizio,Mark;Keith,JulianR;Mansfield,WillJ;Pitts,RaymondC

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研究了吗啡和2种N-甲基-D-天冬氨酸(NMDA)受体拮抗剂苯环利定和LY235959的作用。在表演部分,受试者游到一个隐藏的平台上,这个平台总是在泳池的同一位置。在采购部分,每次会议都将平台移到不同的位置。基线训练在成绩部分产生了快速和直接的游泳到平台,在获得部分产生了陡峭的会话内学习曲线。所有三种化合物都以剂量依赖的方式增加游泳距离、逃避潜伏期和减慢游泳速度,但只有吗啡在习得时持续产生选择性损伤。NMDA拮抗剂通常只在影响行为的剂量时才影响获得,尽管苯环利定在一些动物身上产生了选择性效应。这些结果不同于对灵长类动物反应链的研究,表明任务和物种变量可能是药物影响获得性的重要决定因素。
Effects of morphine and 2 N-methyl-D-aspartate (NMDA) receptor antagonists, phencyclidine and LY235959, were studied using a within-subject, repeated-acquisition/performance procedure adapted to the Morris Swim Task. In the performance component, subjects swam to a hidden platform that was always in the same location in the pool. In the acquisition component, the platform was moved to a different place for each session. Baseline training produced rapid and direct swims to the platform in the performance component and steep within-session learning curves in the acquisition component. All 3 compounds increased swim distances, escape latencies, and slowed swim speed in a dose-dependent manner, but only morphine consistently produced selective impairments on acquisition. NMDA antagonists generally affected acquisition only at doses that also disrupted performance, although phencyclidine produced selective effects in some animals. These outcomes were different than those from studies of response chains in primates, suggesting that task and species variables may be important determinants of drug effects on acquisition.(PsycINFO Database Record (c) 2016 APA, all rights reserved)
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