The predictive brain: Anticipatory control of head direction for the steering of locomotion
The predictive brain: Anticipatory control of head direction for the steering of locomotion
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DOI：
10.1097/00001756-199604260-00015
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发表时间：
1996-04-26
期刊：
影响因子：
1.7
通讯作者：
Berthoz, A
中科院分区：
文献类型：
--
作者：
Grasso, R;Glasauer, S;Berthoz, A
这项研究调查了人类沿着计划的圆形轨迹行走时头部方向的控制。五名健康的志愿者被要求在灯光下蒙着眼睛沿着圆形轨迹匀速行走。实时分析头部和行走方向。头部方向系统地预测了运动方向的变化（约 200 毫秒）。预期间隔取决于圆的曲率。在光线下，头部方向相对于行走方向发生偏离，朝向所执行轨迹的内凹面。结果表明，头部方向是以预测方式逐步控制的。 “走到你看到的地方”策略似乎是沿着圆形轨迹转向的基础。
THE control of head direction in humans walking along planned circular trajectories was investigated in this study. Five healthy volunteers were asked to walk at a constant speed along circular trajectories in the light and while blindfolded. Head and walking directions were analysed on a real-time basis. Head direction systematically anticipated changes in the direction of locomotion (by about 200 ms). The anticipation interval depended on the curvature of the circle. In the light, head orientation was deviated with respect to the walking direction, toward the inner concavity of the performed trajectory. The results suggest that head direction is controlled on a step-by-step basis in a predictive fashion. A 'go where you look' strategy seems to underlie steering along circular trajectories.