[Evoked potentials to perception of photic stimuli of different intensity in normal subjects and optic nerve atrophy].
In 30 subjects with normal vision an increase in stimulus brightness (8 gradations) led to reduction in pick-latencies (PL) of II-VII waves and to an increase in their amplitudes (A), maximal in the IV positive wave with PL amounting to 102-109 msec. Atrophy of optical nerves produced an impairment of power processing of the signal and its temporal characteristics, a decline of A III, IV waves (especially pronounced in IV) and a tendency to an increase in A V and VI waves. Informational significance of PL waves and characteristics of information processing with impaired vision are discussed.
D000293:Adolescent; D002648:Child; D005071:Evoked Potentials; D006801:Humans; D009896:Optic Atrophy / Q000503:physiopathology*; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology; D014795:Visual Pathways / Q000503:physiopathology*; D014796:Visual Perception / Q000502:physiology*
Vyzvannye potentsialy pri vospriiatii svetovykh stimulov raznoĭ intensivnosti v nrome i pri atrofii zritel'nogo nerva u cheloveka.