Simultaneous retinal and cortical visually evoked electrophysiological responses in between migraine attacks

Abstract

Purpose: People with migraine often report aversion to flickering lights and show abnormal results on behavioural tasks that require the processing of temporal visual information. Studies have reported that the cortically evoked electrophysiological response to a flickering visual stimulus is abnormal; however, none have considered whether there is an underlying pre-cortical abnormality. In this cross-sectional study, we consider whether people with migraine have retinal and cortical electrophysiological abnormalities to flickering stimuli.Methods: Monocular transient (1-Hz) and steady-state (8.3-Hz) pattern reversal electroretinograms (PERGs) and pattern visual evoked responses (PVERs) were..