Disentangling visual and motor contributions to continuous psychophysics

Simulated visual impairment (two levels) and using the non-dominant versus dominant hand both change tracking cross-correlogram metrics, with visual loss mainly delaying and broadening responses.

• Why it matters: Tracking-based continuous psychophysics can reflect both vision and motor control, so performance changes need signatures that separate visual from motor contributions.
• What they did: Participants tracked a randomly moving target with a computer mouse while wearing glasses simulating two visual impairment levels and using either the dominant or non-dominant hand; cross-correlogram peak, lag, and width were analyzed alongside pause frequency/duration and movement noise.
• The result: Visual impairment mainly delayed and broadened responses in proportion to each participant’s visual acuity loss, while the non-dominant hand mainly lowered peak correlation, linked to more frequent/longer pauses and noisier movement between pauses.

AI summary of the abstract · may contain errors · not medical advice · read the paper.