RESPONSES OF INFERIOR TEMPORAL CORTEX AND HIPPOCAMPAL-NEURONS DURING DELAYED MATCHING-TO-SAMPLE IN MONKEYS (MACACA-FASCICULARIS)
RESPONSES OF INFERIOR TEMPORAL CORTEX AND HIPPOCAMPAL-NEURONS DURING DELAYED MATCHING-TO-SAMPLE IN MONKEYS (MACACA-FASCICULARIS)
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DOI：
10.1037/0735-7044.108.3.443
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发表时间：
1994-06-01
影响因子：
1.9
通讯作者：
GROSS, CG
中科院分区：
文献类型：
--
作者：
COLOMBO, M;GROSS, CG
本研究记录了2只猕猴在认知-视觉和视觉-视觉延迟匹配任务下下颞叶皮层和海马的单单位活动。本研究的主要目的是比较两个区域之间的延迟神经元的反应特性。作者指出：（a）IT皮层延迟活动通常对特定刺激具有选择性，而海马延迟活动通常是非选择性的;（B）海马的延迟活动水平通常大于IT皮层;（c）与IT皮层延迟活动不同，海马延迟活动的幅度往往随着延迟的进展而增加。作者还检查了延迟活动的功能意义，并注意到当猴子执行75%-100%正确时遇到延迟神经元的概率高于50%-75%正确时。这些研究结果的意义进行了讨论的视觉识别记忆。
Single-unit activity was recorded from inferior temporal (IT) cortex and the hippocampus in 2 macaques trained on auditory-visual and visual-visual delayed matching-to-sample tasks. The main purpose of the study was to compare the response properties of delay neurons between the 2 areas. The authors noted that (a) IT cortex delay activity was usually selective to a particular stimulus, whereas hippocampal delay activity was usually nonselective; (b) the level of delay activity was generally larger in the hippocampus than in IT cortex; and (c) unlike IT cortex delay activity, hippocampal delay activity tended to increase in magnitude as the delay progressed. The authors also examined the functional significance of delay activity and noted a higher probability of encountering a delay neuron when the monkeys were performing 75%-100% correct as compared with 50%-75% correct. The significance of these findings for visual recognition memory is discussed.