Investigation of long-term recognition and association memory in unit responses from inferotemporal cortex.
Investigation of long-term recognition and association memory in unit responses from inferotemporal cortex.
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颞下皮层单位反应中长期识别和联想记忆的研究。
DOI：
10.1007/bf00230436
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发表时间：
1993
影响因子：
2
通讯作者：
Ringo,JL
中科院分区：
文献类型：
--
作者：
Sobotka,S;Ringo,JL
我们研究了识别和联想记忆的反应中的单个单位分离在下颞叶皮层的猕猴，而它执行的视觉辨别任务。单位反应表现出显着的识别记忆（减少响应图像重复）。此外，再认记忆似乎是这些单位的永久功能。这种记忆在最近一次呈现更熟悉的图像后至少1小时记录的反应中是明显的，并且可能是在数月的训练中建立起来的。对于这些细胞，短期识别记忆（秒）和长期识别记忆（小时加）显着相关（0.68）。在这些相同的细胞的联想记忆进行了研究与10个抽象的图像已随机和永久配对。猴子已经学会区分这五对图像和其他类似的图像。无论是尖峰计数，也不是时间响应形状（由主成分分析确定）显示已配对的图像的相似性增加。同时具有短期和长期识别记忆的细胞对先前配对的刺激的反应并不比随机预期的更相似。
We investigated recognition and association memory in the responses of single units isolated in the inferior temporal cortex of a macaque while it performed a visual discrimination task. The unit responses showed significant recognition memory (a decreased response upon image repetition). Furthermore, a recognition memory appeared to be a permanent feature in these units. Such memory was evident in responses recorded at least 1 h after the most recent presentations of the more familiar images and may have been built up over the months of training. For these cells, the shorter-term recognition memory (seconds) and the longer-term recognition memory (hour plus) were significantly correlated (0.68). In these same cells associative memory was investigated with ten abstract images which had been randomly and permanently paired. The monkey had been taught to discriminate these five pairs from other similar pairs of images. Neither the spike count nor temporal response shape (as determined by a principal-components analysis) showed increased similarity for the images that had been paired. The cells that had both short-term and long-term recognition memory had responses to previously paired stimuli that were no more similar than expected by chance.