Sex differences in visuomotor tracking
(2020) Scientific Reports — Vol. 10, n° 1 (2020)
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- Authors
Mathew, James 
Masson, Guillaume S. Danion, Frederic R.
- Abstract
- There is a growing interest in sex diferences in human and animal cognition. However, empirical evidences supporting behavioral and neural sex diferences in humans remain sparse. Visuomotor behaviors ofer a robust and naturalistic empirical framework to seek for the computational mechanisms underlying sex biases in cognition. In a large group of human participants (N= 127), we investigated sex diferences in a visuo-oculo-manual motor task that consists of tracking with the hand a target moving unpredictably. We report a clear male advantage in hand tracking accuracy. We tested whether men and women employ diferent gaze strategy or hand movement kinematics. Results show no key diference in these distinct visuomotor components. However, highly consistent diferences in eye-hand coordination were evidenced by a larger temporal lag between hand motion and target motion in women. This observation echoes with other studies showing a male advantage in manual reaction time to visual stimuli. We propose that the male advantage for visuomotor tracking does not reside in a more reliable gaze strategy, or in more sophisticated hand movements, but rather in a faster decisional process linking visual information about target motion with forthcoming hand, but not eye, actions.
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Citations
Mathew, J., Masson, G. S., & Danion, F. R. (2020). Sex differences in visuomotor tracking. Scientific Reports, 10(1). https://doi.org/10.1038/s41598-020-68069-0 (Original work published 2020)