Association Between Brain Activity of Dominant Ocular Mechanism and Visually Evoked Postural Responses

Abstract

This study investigates the association between ocular dominance and brain function using functional magnetic resonance imaging (fMRI), focusing on the dominant eye’s role in processing visual information and its effect on visually evoked postural responses (VEPRs). The research involved participants with identified dominant eyes, using tasks designed to engage peripheral vision and evoke postural changes. The fMRI results revealed increased cerebral activity in the precuneus and occipital lobe regions during dominant eye viewing, suggesting these areas’ significant role in processing ocular dominance mechanisms. This activity was asymmetric, predominantly occurring in the left hemisphere, supporting theories of contralateral visual processing in the brain. The study also explored the relationship between ocular dominance and VEPRs. However, no significant correlation was found between the dominant eye and postural changes, indicating a complex interplay of visual processing that may not directly influence postural control. These findings contribute to the understanding of ocular dominance in brain function, highlighting specific brain regions involved in processing visual information from the dominant eye and providing insights into the neural mechanisms underlying ocular dominance and visual perception.