Mikami A
Hokkaido Igaku Zasshi. 1980 Jul;55(4):323-33.
In order to search inferotemporal (IT) neuron activities related to processes of visual discrimination and visual short-term memory, the monkeys were trained to do so called Konorski's task. In the task, the monkey was seated in a primate chair and a pair of color stimuli (red or green) was presented from the same two colored light-emitting-diode (LED) before and after a fixed delay interval of 1-5 sec. The monkey was rewarded for pressing one of two levers when two stimuli were the same in color, and the other side when two stimuli were different. A total of 101 neurons were recorded from the anterior IT (between A3-A15). About 80% of recorded neurons activated by LED and about 60% of them showed different discharge rates to different colors (color selectivity). About 80% of color selective neurons showed stronger responses to the second visual stimuli than the first stimuli. These color selective neurons were recorded from the posterior part of the anterior IT (between A3-A10). No color dependent activities were observed during delay period. The data suggested that the IT neurons were related to a process of visual discrimination so that a physically identical stimulus which had a different meaning in the behavioral context would be differentiated.
为了寻找与视觉辨别和视觉短期记忆过程相关的颞下（IT）神经元活动，对猴子进行了所谓的科诺尔斯基任务训练。在该任务中，猴子坐在灵长类动物椅上，在1至5秒的固定延迟间隔前后，从相同的两个彩色发光二极管（LED）呈现一对颜色刺激（红色或绿色）。当两个刺激颜色相同时，猴子按下两个杠杆中的一个会得到奖励；当两个刺激颜色不同时，按下另一侧的杠杆会得到奖励。从前颞下（A3 - A15之间）总共记录了101个神经元。约80%的记录神经元被LED激活，其中约60%对不同颜色表现出不同的放电率（颜色选择性）。约80%的颜色选择性神经元对第二个视觉刺激的反应比第一个刺激更强。这些颜色选择性神经元是从颞下前部的后部（A3 - A10之间）记录到的。在延迟期未观察到颜色依赖性活动。数据表明，IT神经元与视觉辨别过程相关，因此在行为背景中有不同意义的物理上相同的刺激能够被区分开来。
