Influence of temporal lobe lesions on photic-evoked responses in occipital visual areas.
In 20 patients with temporal lobe lesions and 10 controls, the averaged photic-evoked responses (APERs) and their dispersion pattern (DP) were investigated in inion-vertex-lead and bilaterally in inion-parietal leads (I-P3 and I-P4). The patients with temporal lobe lesions, regardless of lesion location in temporal areas, displayed either absence of APER (the whole APER or only the initial components) or a latency increase without amplitude changes. The DP was generally abnormal. The role of the temporal lobe in the organization of APER in visual areas is discussed.
D000328:Adult; D001927:Brain Diseases / Q000503:physiopathology; D001931:Brain Mapping; D001932:Brain Neoplasms / Q000503:physiopathology*; D005071:Evoked Potentials; D006801:Humans; D008875:Middle Aged; D011930:Reaction Time; D013702:Temporal Lobe; D014793:Visual Cortex / Q000503:physiopathology*; D014796:Visual Perception / Q000502:physiology