Galvanic vestibular stimulation modifies vection paths in healthy subjects.
Galvanic vestibular stimulation modifies vection paths in healthy subjects.
复制标题
电流前庭刺激改变健康受试者的矢量路径。
作者：
J. Lepecq;C. de Waele;Sophie Mertz;Claudine A. Teyssedre;P. T. Huy;P. Baudonniere;P. Vidal
本研究旨在确定前庭输入是否有助于自我运动方向的感知。通过研究双耳双极前庭电刺激（GVS）对视觉诱导的自我运动（即，vection）。固定的坐姿受试者提交的视动刺激诱导向前或向上的线性向量。在感知向量的同时，给予不同强度和斜坡持续时间的梯形GVS。受试者在整个实验过程中通过操纵杆指示他们感知的自我运动路径的形状和方向，并且在每次试验后通过操纵3D人体模型。结果表明：结果表明：（1）GVS引起的运动路径改变，（2）GVS发作后运动路径改变的发生率高于GVS消失后运动路径改变的发生率，（3）GVS发作后运动路径改变的发生率与GVS的强度有关，而与GVS变化的陡度无关，（4）运动路径以倾斜或弯曲的方式向外侧偏移，（5）GVS发作后运动路径改变的发生率与GVS发作后运动路径改变的程度无关。5）GVS开始后，电子的运动轨迹向阴极侧偏移。这是第一次，前庭信息，已经知道有助于诱导的vection，被证明修改自我运动知觉过程中的vection。
The present study aimed at determining whether vestibular inputs contribute to the perception of the direction of self-motion. This question was approached by investigating the effects of binaural bipolar galvanic vestibular stimulation (GVS) on visually induced self-motion (i.e., vection) in healthy subjects. Stationary seated subjects were submitted to optokinetic stimulation inducing either forward or upward linear vection. While perceiving vection, they were administered trapezoidal GVS of different intensities and ramp durations. Subjects indicated the shape and direction of their perceived self-motion path throughout the experiment by a joystick, and after each trial by the manipulation of a 3D mannequin. Results show that: 1) GVS induced alterations of the path of vection; 2) these alterations occurred more often after GVS onset than after GVS offset; 3) the occurrence of vection path alterations after GVS onset depended on the intensity of GVS but not on the steepness of the GVS variation; 4) the vection path deviated laterally according to either an oblique or a curved path; and 5) the vection path deviated toward the cathode side after GVS onset. It is the first time that vestibular information, already known to contribute to the induction of vection, is shown to modify self-motion perception during the course of vection.
DOI：
10.1364/josaa.7.000160
发表时间：
1990
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
W. Warren;D. Hannon
通讯作者：
W. Warren;D. Hannon
DOI：
10.1037/0096-1523.14.4.646
发表时间：
1988-11-01
影响因子：
2.1
作者：
WARREN, WH;MORRIS, MW;KALISH, M
通讯作者：
KALISH, M
DOI：
10.1037//0096-1523.11.2.122
发表时间：
1985-04
期刊：
Journal of experimental psychology. Human perception and performance
影响因子：
--
作者：
G. Andersen;M. Braunstein
通讯作者：
G. Andersen;M. Braunstein