Hippocampal function is required for feedback control of an internal clock's criterion.

Hippocampal function is required for feedback control of an internal clock's criterion.
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内部时钟标准的反馈控制需要海马功能。

DOI:
10.1037//0735-7044.102.1.54
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发表时间:
1988
影响因子:
1.9
通讯作者:
Meck,WH
Meck,WH
中科院分区:
医学4区
文献类型:
--
作者:
Meck,WH

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使用离散试验峰值间期程序来评估海马区损伤对内部时钟标准控制的影响。大鼠首先接受穹隆海马伞损伤或假手术。手术后,大鼠接受20-S峰间隔法训练,随后转入10-S峰间隔法训练。假手术的大鼠对有时可以得到加固的时间反应最大(S 10或20),并且表现出类似于生物反馈控制系统的连续峰值时间的振荡。相比之下,穹隆海马伞损毁大鼠的最大反应时间比加固前早约20%(S 8或16),并且没有显示出连续的高峰时间值控制。综上所述,这些结果表明,穹隆海马伞损毁减少了存储在参考记忆中的强化记忆时间,干扰了存储在工作记忆中的时间标准的内部控制,并且不影响动物对刺激持续时间的敏感性或新的时间标准的获得。
A discrete-trial peak-interval procedure was used to evaluate the effects of hippocampal damage on the control of an internal clock's criterion. Rats first received either lesions of the fimbria-fornix or sham operations. Following surgery rats were trained on a 20-s peak-interval procedure and later were transferred to a 10-s peak-interval procedure. Rats with sham operations were maximally responsive about the time that reinforcement was sometimes made available (10 or 20 s) and showed an oscillation of successive peak-time values similar to biological feedback control systems. In contrast, rats with fimbria-fornix lesions were maximally responsive at a time about 20% earlier than the time that reinforcement was made available (8 or 16 s) and showed no control of successive peak-time values. Taken together, these results demonstrate that a fimbria-fornix lesion reduces the remembered time of reinforcement stored in reference memory, interferes with the internal control of temporal criteria stored in working memory, and has no effect on the animal's sensitivity to stimulus duration or the acquisition of a new temporal criterion.
DOI: --
发表时间: 1985
影响因子: 29.3
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DOI: --
发表时间: 1982
期刊: Philosophical transactions of the Royal Society of London. Series B, Biological sciences
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