Kolev O I
University Hospital of Neurology and Psychiatry, Department of Otoneurology, Sofia, Bulgaria.
J Vestib Res. 1995 Jan-Feb;5(1):19-23.
This study describes a hitherto unknown phenomenon in healthy humans: visual hallucinations evoked by caloric vestibular stimulation. The hallucinations are of elementary type. The following quantitative and qualitative characteristics of the hallucinatory images were measured: latency, duration, location in the visual field, relation to the provoked vertigo, colour of the hallucinatory image and the background, number, size, shape, distance from the eyes, and motion. Two mechanisms are proposed to explain the genesis of these hallucinations. One mechanism is direct: change in the spontaneous activity of the visual system in several levels; the other mechanism is indirect: transient haemodynamic disturbance in the visual system.
冷热前庭刺激诱发的视幻觉。这些幻觉属于基本类型。对视幻觉图像的以下定量和定性特征进行了测量：潜伏期、持续时间、在视野中的位置、与诱发眩晕的关系、幻觉图像及其背景的颜色、数量、大小、形状、与眼睛的距离以及运动。提出了两种机制来解释这些幻觉的产生。一种机制是直接的：视觉系统多个层面的自发活动发生改变；另一种机制是间接的：视觉系统的短暂血流动力学紊乱。
