Sims M H, Laratta L J
Department of Animal Science, College of Veterinary Medicine, University of Tennessee, Knoxville 37901.
Am J Vet Res. 1988 Nov;49(11):1876-81.
Visual-evoked potentials (VEP) were studied in 8 healthy adult cats anesthetized with xylazine HCl and ketamine HCl. Monocular visual stimulation was accomplished by a 3 x 5 matrix of light-emitting diodes. Subcutaneous needle electrodes placed in the scalp at various locations and a contact lens electrode on the cornea were used to record cortical and electroretinographic activities, respectively. Multiple electrode pairings and unilateral optic nerve transsection were used to distinguish between retinal and postretinal potentials recorded from scalp electrodes. The VEP was a robust polyphasic cortical potential, with peak latencies between 0 and 110 ms. Using the light-emitting diode method of stimulation, a VEP was recorded which was not contaminated by volume-conducted retinal activity.
在8只使用盐酸赛拉嗪和盐酸氯胺酮麻醉的健康成年猫身上研究了视觉诱发电位（VEP）。通过一个3×5的发光二极管矩阵实现单眼视觉刺激。分别使用置于头皮不同位置的皮下针电极和角膜上的隐形眼镜电极来记录皮层活动和视网膜电图活动。采用多电极配对和单侧视神经横断术来区分从头皮电极记录到的视网膜电位和视网膜后电位。VEP是一种强大的多相皮层电位，峰潜伏期在0到110毫秒之间。使用发光二极管刺激方法记录到的VEP未被容积传导的视网膜活动所污染。
