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Updated: Jun 24, 2026

A Fine Motor Task to Study Joint Kinematics in a Preclinical Model of Neurodegenerative Disease

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No neglect-specific deficits in reaching tasks.

Stéphanie Rossit¹, Paresh Malhotra, Keith Muir

¹Department of Psychology, University of Glasgow, Glasgow G128QB, UK.

Cerebral Cortex (New York, N.Y. : 1991)

|March 14, 2009

Summary

This summary is machine-generated.

Patients with right-hemisphere stroke, with or without hemispatial neglect, showed slower reaction times and less accurate movements towards leftward stimuli. These visuomotor deficits may stem from broader right-hemisphere damage affecting motor control networks.

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Published on: May 2, 2021

Area of Science:

Neuroscience
Cognitive Psychology
Neurology

Background:

Hemispatial neglect is associated with visuospatial deficits.
Visuomotor control in neglect patients yields inconsistent findings.
Right-hemisphere stroke impacts motor control.

Purpose of the Study:

To compare visuomotor performance in patients with and without hemispatial neglect after right-hemisphere stroke.
To investigate the influence of visual feedback on pointing accuracy and reaction time.
To explore the neural correlates of visuomotor deficits in right-hemisphere stroke.

Main Methods:

Comparison of visuomotor pointing tasks (direct or between stimuli) in patients with/without neglect and controls.
Inclusion/exclusion of visual feedback during movement execution.
Voxel-lesion symptom analysis to correlate lesion location with performance deficits.

Main Results:

No neglect-specific visuomotor impairment was found.
Both patient groups exhibited increased reaction times to leftward stimuli.
Decreased accuracy was observed for open-loop leftward reaches in both patient groups.
Lesion-symptom analysis implicated basal ganglia, occipito-parietal, and frontal areas in visuomotor deficits.

Conclusions:

Visuomotor deficits in right-hemisphere stroke may not be solely attributable to hemispatial neglect.
Right-hemisphere lesions can induce motor deficits independent of neglect.
Damage to specific visuomotor network nodes contributes to observed motor impairments.