Westine D M, Enderle J D
Department of Electrical & Electronics Engineering, North Dakota State University, Fargo 58105.
Biomed Sci Instrum. 1991;27:171-80.
Horizontal saccades are initiated in the lab by a display of nine LEDs spaced five degrees apart and centered with respect to primary position (looking straight ahead). From this setup, there are seventy two combinations of unique saccades. Temporal and spatial information from these recorded saccades are compared to saccades generated from a hypothetical model using the same experiment paradigm. The model uses two neural integrator feedback loops within the premotor circuitry. One is to control the duration of the high frequency burst of neural activity that caused the muscles to contract at saccade velocities and the other to produce the proper neural signal necessary to keep the eye in its new post-saccade position. Depending on the initial position of the eye, different temporal and spatial schemes are necessary to produce the same size saccade. These control strategies are realized by modifying known neural signals within the premotor circuitry.
在实验室中，水平扫视是通过九个间隔为五度且相对于初始位置（直视前方）居中排列的发光二极管（LED）显示来启动的。基于此设置，存在七十二种独特扫视的组合。将这些记录的扫视的时间和空间信息与使用相同实验范式从假设模型生成的扫视进行比较。该模型在运动前神经回路中使用两个神经积分器反馈回路。一个用于控制导致肌肉在扫视速度下收缩的神经活动高频爆发的持续时间，另一个用于产生将眼睛保持在扫视后新位置所需的适当神经信号。根据眼睛的初始位置，需要不同的时间和空间方案来产生相同大小的扫视。这些控制策略是通过修改运动前神经回路内已知的神经信号来实现的。
