Mental imagery is a rehabilitation technique for stroke patients, involving the mental representation of movement. Recent technical advancements have enabled the use of visual, proprioceptive, and mixed feedback to enhance motor stimulation. Currently, all post-stroke patients receive these techniques indiscriminately. This study aims to demonstrate differences in the integration of visual and proprioceptive feedback in stroke patients and understand the determinants based on the affected brain area.
Patients with motor disabilities will perform motor imagery tasks with various feedback types while their cortical activity is recorded using EEG. EEG data for each type of feedback will be correlated with the lesion area in order to better understand the ongoing mechanisms.
Hemiplegic subjects : Male or female, aged 18 to 80 years, first ischemic or hemorrhagic stroke, having signed the written consent and affiliated or entitled to a social security scheme
Severe cognitive impairment, severe Aphasia or severe neglect that impair ability to understand instructions or to execute tasks
Single group
Computerized mirror therapy (IVS3) + Tendon vibration (Vibramoov)
DeviceVisit 1 : Followed by 30 movements of Paretic arm wrist extension with 4 randomized experimental conditions (Vision alone, Vibration alone, Vision + Vibration, No feedback), with EEG monitoring. Measurement of movement perception feeling for each condition. Visit 2 : 30 movements of Paretic arm wrist extension with 4 randomized experimental conditions (Vision alone, Vibration alone, Vision + Vibration, No feedback), with EEG monitoring. Measurement of movement perception feeling for each condition.
EEG beta desynchronization
Differences in the EEG beta desynchronization over motor-cortex across the types of feedbacks.
Alpha Band
Alpha Band desynchronization over motor cortex
Occipital alpha band
Occipital alpha band modulations
Beta rebound
Beta rebound (Event related synchronization)
Parietal beta-band
Parietal beta-band desynchronization
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