NEURONAL CORRELATES OF A PERCEPTUAL DECISION
NEURONAL CORRELATES OF A PERCEPTUAL DECISION
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DOI：
10.1038/341052a0
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发表时间：
1989-09-07
期刊：
影响因子：
64.8
通讯作者：
MOVSHON, JA
中科院分区：
文献类型：
--
作者：
NEWSOME, WT;BRITTEN, KH;MOVSHON, JA
神经元活动和心理物理判断之间的关系一直是感觉处理专业的学生感兴趣的问题。以前对这个问题的分析比较了人类或动物观察者在检测或辨别任务中的表现与单个神经元携带的信号，但由于神经元和感知数据不是在相同的时间和相同的条件下获得的，因此受到了阻碍1 -4。我们现在已经测量了猴子和视觉皮层神经元的表现，而动物执行的心理物理任务与所研究的神经元的特性很好地匹配。在这里，我们报告说，在这项任务中，大多数神经元的可靠性和敏感性等于或超过了猴子。因此，我们认为，在我们的条件下，心理物理判断可以基于相对少量的神经元的活动。
THE relationship between neuronal activity and psychophysical judgement has long been of interest to students of sensory processing. Previous analyses of this problem have compared the performance of human or animal observers in detection or discrimination tasks with the signals carried by individual neurons, but have been hampered because neuronal and perceptual data were not obtained at the same time and under the same conditions1–4. We have now measured the performance of monkeys and of visual cortical neurons while the animals performed a psychophysical task well matched to the properties of the neurons under study. Here we report that the reliability and sensitivity of most neurons on this task equalled or exceeded that of the monkeys. We therefore suggest that under our conditions, psychophysical judgements could be based on the activity of a relatively small number of neurons.