Changes of brainstem auditory evoked potential and visual evoked potential in vertebrobasilar transient ischemic attack patients

The Aim of the study is to compare the changes in Brainstem Auditory Evoked Potential and Visual Evoked Potential in VertebroBasilar Transient Ischemic Attack patients to the normal subject. For this study, Auditory Evoked Potential and visual evoked potential were recorded in 40 patients with Vertebrobasilar Transient Ischemic Attack and 40 normal control group. This study was conducted at Research Laboratory , Department of Physiology,Thanjavur Medical College, Thanjavur. The Study group was from the Thanjavur Medical College & Hospital, Thanjavur. Exclusion criteria were mainly Stroke, other Neurological diseases or Hearing loss. Informed written consent from the patients of Thanjavur Medical College & Hospital and control group was obtained. In Brainstem Auditory Evoked Potential ,the Absolute Latency of Wave V was prolonged and amplitude reduction was observed in Wave V of Vertebrobasilar Transient Ischemic Attack patient and was found to be statistically significant. In Visual Evoked Potential , no changes were observed in the Absolute Latency and amplitude of Vertebrobasilar Transient Ischemic Attack patient and was found to be statistically insignificant