The Effect of Handedness on Visual P300 Responses and Visual Scanning Pathways

It is thought that hemispheric asymmetry is reflected to behavioral asymmetries. The most prominent behavioral asymmetry is hand preference. This study consisted of two groups (14 each) with different handedness. Event-Related Potentials (ERPs) to a visual oddball task were recorded from 19 sites, and another session with a “change detection paradigm” was applied, where the visual scanning pathways were recorded. Although the comparison of P300 grand averages of 19 sites showed no significant difference between the groups, the comparison of the central sites (Fz, Cz, Pz) showed significant differences of both, amplitude and latency, (p