Eye-head coordination for the steering of locomotion in humans:: an anticipatory synergy
Eye-head coordination for the steering of locomotion in humans:: an anticipatory synergy
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DOI：
10.1016/s0304-3940(98)00625-9
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发表时间：
1998-09-04
影响因子：
2.5
通讯作者：
Berthoz, A
中科院分区：
文献类型：
--
作者：
Grasso, R;Prévost, P;Berthoz, A
我们调查了6名健康志愿者在光线和闭眼条件下沿沿着90度角轨迹行走时的头部和注视方向。我们发现，头部和眼睛系统性地偏离了弯曲轨迹的未来方向。预期铅约为1秒，引人注目的是，在黑暗中观察到相同的行为。在沿着轨迹（从终点到起点）的向后（BW）运动中，注视向相反方向偏离，使得向前运动模式不出现时间反转。定向运动在光下在向前（FW）方向上显示出更高的幅度、再现性和时间提前。我们认为，预期的定向协同作用属于人类导航的行为剧目，并可能反映需要准备一个稳定的参考框架，预期的行动。(C)1998爱思唯尔科学爱尔兰有限公司保留所有权利。
We investigated head and gaze orientation in six healthy volunteers walking along 90 degrees corner trajectories, both at light and with eyes closed. We found that head and eyes systematically deviated toward the future direction of the curved trajectory. Anticipation lead was about 1 s, Strikingly, the same behaviour was observed in darkness. In backward (BW) locomotion along the trajectory (from end- to start-point), gaze deviated toward the opposite direction, such that the forward locomotor pattern did not appear time-reversed, Orienting movements displayed higher amplitude, reproducibility and time lead in the forward (FW) direction at light. We suggest that anticipatory orienting synergies belong to the behavioural repertoire of human navigation and may reflect the need to prepare a stable reference frame for intended action. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.