故意改变视觉诱发电位。
Deliberate alteration of the visual evoked potential.
作者信息
Tan C T, Murray N M, Sawyers D, Leonard T J
出版信息
J Neurol Neurosurg Psychiatry. 1984 May;47(5):518-23. doi: 10.1136/jnnp.47.5.518.
Abstract
Seven out of 12 normal subjects could deliberately produce abnormal pattern-reversal visual evoked potentials (VEPs) which simulated disorders of the anterior visual pathways without detection. In six the mechanism was near-point accommodation and in one eccentric fixation. If voluntary suppression of the VEPs is suspected various modifications to the recording technique may be of value. These include the use of a large check size and stimulus field and binocular stimulation.
摘要
12名正常受试者中有7名能够故意产生异常的图形翻转视觉诱发电位（VEP），这些电位模拟了视觉前通路的紊乱且未被检测到。其中6名受试者的机制是近点调节，1名是偏心注视。如果怀疑存在VEP的自主抑制，记录技术的各种改进可能会有帮助。这些改进包括使用大的方格尺寸和刺激野以及双眼刺激。
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