<p>Sensory Eye Dominance: Relationship Between Eye and Brain</p>

Abstract

Eye dominance refers to the preference to use one eye more than the fellow eye to accomplish a task. However, the dominant eye revealed can be task dependent especially when the tasks are as diverse as instructing the observer to sight a target through a ring, or to report which half-image is perceived more of during binocular rivalry stimulation. Conventionally, the former task is said to reveal motor eye dominance while the latter task reveals sensory eye dominance. While the consensus is that the motor and sensory-dominant eye could be different in some observers, the reason for it is still unclear and has not been much researched. This review mainly focuses on advances made in recent studies of sensory eye dominance. It reviews studies conducted to quantify and relate sensory eye dominance to other visual functions, in particular to stereopsis, as well as studies conducted to explore its plasticity. It is recognized that sensory eye dominance in observers with clinically normal vision shares some similarity with amblyopia at least at the behavioral level, in that both exhibit an imbalance of interocular inhibition. Furthermore, sensory eye dominance is probably manifested at multiple sites along the visual pathway, perhaps including the level of ocular dominance columns. But future studies with high-resolution brain imaging approaches are required to confirm this speculation in the human visual system. Eye and Brain Dovepressopen access to scientific and medical research Open Access Full Text Article submit your manuscript | www.dovepress.com Eye and Brain 2020:12 25-31

Investigating the neurochemistry of the human visual system using magnetic resonance spectroscopy

“…This effect was reversed by increasing GABAergic signalling (Maya Vetencourt et al 2008). Binocular rivalry is a well-established psychophysical paradigm that gives a behavioural index of this cortical competition between eyes (Ooi and He 2020;Levelt 1965;Alais 2005). Here, rivalling stimuli presented to each eye compete for perceptual dominance, and the pattern of perceptual dynamics is thought to reflect excitation and inhibition in the brain.…”

Ocular Dominance and Functional Asymmetry in Visual Attention Networks

“…It relies on the neural mechanisms underlying the excitatory-and-inhibitory balance between binocular viewing. 13 Finally, “sighting eye dominance” is reliable within a given test, because it is based on an either/or judgement as to which eye is preferably used for monocular viewing. With both eyes open, people with normal binocular vision have no sense that one eye contributes more than the other to the combined binocular view.…”

Monosodium Glutamate Maintains Antioxidant Balance in the Neuro-Retinal Axis of Male Wistar Rats

“…Physiological function and relationships between the eye and the brain have led to the establishment of dominance in ocular function (Ooi & He, 2020). Sensory impulses are transmitted to the brain through the optic nerve, which is a white matter tract comprising of axons of retinal glial cells (Butt et al, 2004).…”