Observational studyJournal of neuroengineering and rehabilitation2025
Divided attention and manual visuomotor control in stroke: a combined dual-task and eye movement study.
Observational study in Journal of neuroengineering and rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05454748 (Simultaneous Recording of Cognitive and Motor Functions After Stroke), which is not on this map. Cited by 2 papers.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Simultaneous Recording of Cognitive and Motor Functions After Stroke : Dissociation of Motor and Cognitive Deficits
Who cites it
2 citing papers in PubMed.
- Eye-tracking phenotypes reveal clinically meaningful heterogeneity of attention and executive control dysfunction after stroke.Journal of neuroengineering and rehabilitation · 2026Article
- Deficits in Cognitive-Motor Control of the Ipsilesional Upper Limb in Subacute Stroke Assessed Using a Robotic Exoskeleton: A Longitudinal Study.Brain sciences · 2026Article
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Authors and funding
13 authors.
Funding
Abstract
backgroundDaily manual tasks require cognitive-motor interactions. There is limited research on cognitive-motor dual-tasks involving the upper extremity. In this study we used a manual visuomotor dual-task to measure post-stroke cognitive-motor impairments. Given previous evidence of impaired cognitive-motor interaction in stroke we hypothesized that the presence of enhanced dual-task cognitive load will impact motor performance in stroke patients. We also hypothesized that this dual-task effect would be greater in stroke patients compared to healthy controls. We also explored whether cognitive-motor impairments observed in these single- and dual-task conditions would relate to deficits in manual dexterity.
methods30 chronic stroke participants (29.77 ± 35.39 months post-stroke) with mild-to-moderate hemiparesis without cognitive impairment (global screening test) and 30 age-matched healthy subjects performed a visuomotor grip force-tracking task in single- and dual-task conditions, requiring divided attention (resisting visual distraction) and working memory (mental addition of transiently displayed numbers). Gaze was simultaneously recorded to probe cognitive performance through saccades. Dexterity impairments were separately quantified using a kinetic device.
resultsStroke patients had increased visuomotor tracking error but did not show significantly increased change in visuomotor tracking error during the dual-task, with no significant difference between single task condition vs. divided attention or vs. working memory dual-task conditions. In contrast, age-matched healthy controls did show the expected difference with significantly higher dual-task force-tracking error. The between-group analysis only revealed a significant group difference (Stroke vs. Control) with stroke patients producing twice as much tracking error in both single and dual-task conditions. Stroke participants showed significantly reduced dual-task saccade modulation, with a reduced difference in saccades to displayed numbers (similar in both groups) vs. to distractors (higher in stroke) (median ± IQR: stroke 14.6 ± 18.75%; controls: 26.4 ± 32.41%). Non-inhibited saccades to distractors explained certain dexterity group differences (force control and timing of finger movements).
conclusionThe visuomotor force-tracking error, although increased, did not show enhanced cognitive-motor interaction in stroke. However, the task-related saccade analysis did detect impaired divided attention post-stroke, that may contribute to impaired dexterity, particularly in tasks requiring on-line sensorimotor integration. Upper limb dual-tasking practice may be relevant for engaging attention and enhancing post-stroke activities in daily life. Trial registration ClinicalTrials.gov ID NCT05454748.
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