Suzuki M, Sitizyo K, Takeuchi T, Saito T
Department of Veterinary Physiology, Faculty of Agriculture, Tottori University, Japan.
J Vet Med Sci. 1991 Oct;53(5):911-5. doi: 10.1292/jvms.53.911.
Visual evoked potential (VEP) was studied in five adult male guinea pigs weighing 350-750 g. VEPs were recorded with chronically implanted electrodes. Photic stimulation was presented in the following order: binocular, left eye, right eye, and screened binocular. The averages of the responses were made from 140 samples. When a single eye was exposed to photic stimulation, the ipsilateral VEP was different from the contralateral VEP; the peaks N140 and P200 disappeared, and the peak latencies of N75 and P100 were significantly (P less than 0.05) longer than those in the contralateral hemisphere. Peak-to-peak amplitude N40-P55 in the ipsilateral VEP was significantly (P less than 0.05) lower than that in the contralateral VEP. The contralateral VEP by monocular stimulation was generally indistinguishable from the response to binocular stimulation. As described above, when only a single eye was exposed to flashes, the ipsilateral dural VEP was different from the contralateral dural VEP.
对5只体重在350 - 750克的成年雄性豚鼠进行了视觉诱发电位（VEP）研究。通过长期植入电极记录VEP。光刺激按以下顺序呈现：双眼、左眼、右眼和遮蔽双眼。对140个样本的反应进行了平均。当单眼受到光刺激时，同侧VEP与对侧VEP不同；N140和P200波峰消失，N75和P100的波峰潜伏期显著（P < 0.05）长于对侧半球。同侧VEP中N40 - P55的峰峰值幅度显著（P < 0.05）低于对侧VEP。单眼刺激时的对侧VEP通常与双眼刺激的反应无法区分。如上所述，当仅单眼暴露于闪光时，同侧硬脑膜VEP与对侧硬脑膜VEP不同。
