MENTAL ROTATION OF THE NEURONAL POPULATION VECTOR
MENTAL ROTATION OF THE NEURONAL POPULATION VECTOR
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DOI：
10.1126/science.2911737
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发表时间：
1989-01-13
期刊：
影响因子：
56.9
通讯作者：
MASSEY, JT
中科院分区：
文献类型：
--
作者：
GEORGOPOULOS, AP;LURITO, JT;MASSEY, JT
一只恒河猴经过训练，可以从垂直于和逆时针的方向移动其手臂，从目标光的方向从试验到试验的位置变化。假设该问题的解决方案涉及从光向到运动方向的想象运动向量的创造和精神旋转。该假设是通过记录任务执行过程中运动皮层中细胞的活性并在反应时间内连续时间间隔计算神经元载体的活性。人口矢量以平均732.的平均速率逐渐逆时针从光的方向旋转到运动的方向。每秒。这些结果为精神旋转假说提供了直接的神经证据，并表明神经元媒介是“读取”并识别神经合奏的认知操作的有用工具。
A rhesus monkey was trained to move its arm in a direction that was perpendicular to and counterclockwise from the direction of a target light that changed in position from trial to trial. Solution of this problem was hypothesized to involve the creation and mental rotation of an imagined movement vector from the direction of the light to the direction of the movement. This hypothesis was tested directly by recording the activity of cells in the motor cortex during performance of the task and computing the neuronal population vector in successive time intervals during the reaction time. The population vector rotated gradually counterclockwise from the direction of the light to the direction of the movement at an average rate of 732.degree. per second. These results provide direct, neural evidence for the mental rotation hypothesis and indicate that the neuronal population vector is a useful tool for "reading out" and identifying cognitive operations of neuroal ensembles.