Akademik Veri Yönetim Sistemi
ACTIVITAS NERVOSA SUPERIOR REDIVIVA, cilt.63, sa.1, ss.11-21, 2021 (ESCI)
Pseudoneglect is the general bias for the healthy population to over-attend to the left hemispace. This phenomenon is classically demonstrated in visuospatial modality using various line bisection tasks. The present study investigates the effect of horizontal and vertical spatial fields on the presence of pseudoneglect using the “Landmark Task”. MATERIAL AND METHODS: Depending on the horizontal spatial location, thirty-one healthy subjects carried out the same task in three separate sessions, in left, central, and right visuospatial positions. The stimuli at each session were vertically located at the upper, middle, and lower screen fields. We recorded the participant’s eye movements to analyze scanning patterns in the course of their judgments. RESULTS: In horizontal alignments, we replicated the previous finding that pseudoneglect was stronger in the left visual field. In terms of vertical alignment, pseudoneglect was found to be stronger in the lower field than in the middle field. The leftward judgment bias was observed in the left–lower field greater among whole fields. The scanning bias was also found to be consistent with pseudoneglect in the left session. CONCLUSION: Our results indicated that the contribution of the right hemisphere to the allocation of attention exists mainly for horizontal alignment, and more pronounced in the left hemispace.