How Eye Dominance Strength Modulates the Influence of a Distractor on Saccade Accuracy

Abstract

We show that eye dominance strength influences saccade target selection. We discuss several arguments supporting the view that such advantage may be linked to the relationship between the dominant eye and ipsilateral hemisphere. French Abstract.

Assessing Saccadic Eye Movements With Head-Mounted Display Virtual Reality Technology

“…Ocular dominance is one of the important factors that could affect the results of saccadic eye movement. A previous study observed that eye dominance influenced saccade amplitude as the participants with strong ocular dominance reached more accurate saccades toward the target in the hemifield opposite to the side of dominant eye than in the same side (45). While our investigation has shown that both gaze direction and pupil position data can be used to evaluate latency and error rate of saccadic eye movement, ocular dominance as well as peak velocity of saccades could be evaluated with only gaze direction data.…”

Asymmetries of the visual system and their influence on visual performance and oculomotor dynamics

“…Interestingly, this shows that studies of NTAs in saccadic parameters could reveal individual characteristics such as the strength of eye dominance. Moreover, other studies contrasting participants with “strong” eye dominance (without any NTA in saccadic peak velocity) against participants with “weak” eye dominance (exhibiting standard NTA in saccadic peak velocity) showed that this measure of eye dominance strength based on oculomotor behaviour influenced perceptual (Chaumillon et al., ) and visuo‐motor (Tagu, Doré‐Mazars, Lemoine‐Lardennois, & Vergilino‐Perez, ) performance.…”

“…In Tagu et al. () participants with left or right eye dominance made saccades towards a target presented along with a proximal distractor. This situation is known to induce a “global effect” (Findlay, ; Vitu, ; Walker et al., ): the saccade landing position falls in between the saccade target and the distractor.…”

“…Tagu et al. () measured this global effect separately for the left‐ and right visual hemifields. Participants with strong eye dominance had higher saccade accuracy (weaker global effect) in the hemifield contralateral to the dominant eye than in the ipsilateral hemifield.…”

“…Tagu et al. () proposed that the higher saccade accuracy found in the hemifield contralateral to the dominant eye reflected this. Moreover, this only occurs for participants with strong eye dominance (no NTA in saccadic peak velocity), so the relationship between the dominant eye and the ipsilateral V1 should be present in this population only.…”