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Summary
Most people are right-eyed, regardless of sex or handedness. This study investigated eyedness and gaze fixation in healthy individuals, suggesting a role for both cerebral hemispheres in bodily functions.
Area of Science:
- Neuroscience
- Ophthalmology
- Human Physiology
Background:
- Eyedness, or ocular dominance, is crucial for visual perception and motor control.
- Understanding the neurological basis of gaze fixation is key to comprehending visual-behavioral interactions.
- Previous research indicates potential links between handedness and cerebral hemisphere dominance, but eyedness patterns require further clarification.
Purpose of the Study:
- To investigate the prevalence of "eyedness" (ocular dominance) in a healthy population from Central India.
- To determine if eyedness is influenced by factors such as sex or handedness.
- To explore the relationship between eyedness, gaze fixation, and cerebral hemisphere function.
Main Methods:
- A study was conducted on 283 right-handed and 30 left-handed healthy individuals.
- Participants' "eyedness" was assessed concerning their fixation of gaze on a particular point.
- Data analysis focused on the distribution of eyedness across different demographic groups.
Main Results:
- The majority of participants (65.81%) exhibited right-eyedness.
- Eyedness was found to be independent of both sex and handedness in this population.
- While the left cerebral hemisphere appears dominant for gaze fixation in most individuals, the study advocates for considering the interplay between both hemispheres.
Conclusions:
- Right-eyedness is the predominant pattern in the studied population.
- Cerebral hemisphere dominance for gaze fixation is not solely determined by handedness or sex.
- A holistic view of bilateral cerebral hemisphere function is essential for understanding individual bodily control.