Virtual-reality Exercises for Alleviating Attention Deficits in Patients With Acquired Brain Injury

Among the cognitive disorders due to stroke, attention impairments are frequent and pervading deficits with a variable incidence ranging from 46% to 92% for attention deficits. Stroke patients may have difficulties to focus, pay attention or attend to more than one stimulus at a time. These deficits are insufficiently addressed in the current standard of care. The proposed study is a three-arm (N=45 per group), double-blind, randomized, and actively controlled study. This study uses immersive virtual reality (VR) based training protocols to address attention and executive dysfunctions in patients with stroke. For each cognitive domain, the solution proposes specific gamified activities, with different levels of difficulty, titrated to the patient's level of impairment, assessed by embedded short assessments. The investigators hypothesize that a daily training using VR-based gamified neuropsychological activities, in addition to standard of care, will decrease attention and executive deficits as much as time-matched daily extra neuropsychological sessions of standard of care. The investigators hypothesize too that delivering such daily extra session of VR-based gamified neuropsychological activities in addition to the standard of care will decrease more attention deficits than the actual regular standard of care dose. The primary outcome will be the change in attentional abilities, measured by standardized tests of attention, before and after 20 sessions of VR-based training for the experimental group and 20 additional neuropsychological are sessions for the dose-match control group. The secondary outcomes will include changes in spatial cognition, attention in activities of daily life, executive functions, influence of the lesions' etiology, impression of our rehabilitation program as a credible treatment, among others.

Inclusion criteria

• Time from stroke onset < 1 month
• Objective pathological performance on at least one standardized test or subtest on attention during standard neuropsychological evaluation
• Brain injury documented by routine neuroradiological examination (computed tomography or magnetic resonance imaging scan)
• Able to give informed consent as documented by signature
• Age >= 18 years old

Exclusion criteria

• Epilepsy
• Inability or contraindications to undergo the investigated intervention
• Major psychiatric co-morbidity
• Major neurocognitive deficits (e.g. dementia)
• Incapacity to discriminate colors
• General cognitive state preventing to understand and perform the tasks
• Decision to not be informed of incidental findings