Revisiting the relationship between hand preference and lateral eye movement

The study examines the relationship between hand preference and conjugate lateral eye movements. The sample comprised of 224 persons. The hand preference was assessed using a handedness inventory. Conjugate lateral eye movements were elicited in response to verbal and spatial questions among left-, mixed- and right-handers. The left- and mixed-handers exhibit significantly greater number of conjugate lateral eye movements than the right-handers. On the verbal task, right-handers exhibit rightward conjugate lateral eye movements, and left- and mixed-handers exhibit leftward conjugate lateral eye movements. On the spatial questions, right-handers exhibit leftward conjugate lateral eye movements and left- and mixed-handers also exhibit leftward conjugate lateral eye movements. While right-handers show normal lateralization pattern, the left- and mixed-handers show right brain dominance irrespective of the nature of questions.