[Lateralization of saccadic latency during monocular presentation of stimuli to a leading and non-leading eye].
Saccadic latencies were studied in ten healthy subjects. Peripheral targets were presented monocularly to a leading and nonleading eyes in the right and left hemifields. SS (single step) and OVERLAP (200 ms) schemes of visual stimulation were used. Under OVERLAP conditions, the saccadic latency was longer by 30-39 ms and the number of long-latency saccades was higher than under SS conditions, especially in subjects with mixed asymmetry profiles. In the majority of subjects with right asymmetry profile, the latencies of saccades during stimulation of the leading eye were by 12 ms shorter than during stimulation of the nonleading eye, and the latencies of right saccades were by 24 ms shorter than that of the left saccades independently of the stimulated eye. The obtained results explain some characteristic features of hemyspheric asymmetry in organization of saccadic movements.
Moiseeva
V V
VV
Lomonosov State University, Moscow.
Slavutskaia
M V
MV
Shul'govskiĭ
V V
VV
D001921:Brain / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D010775:Photic Stimulation / Q000379:methods; D012438:Saccades / Q000502:physiology*; D013997:Time Factors; D015349:Vision, Monocular / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology*