Stroke
Conditions
Keywords
stroke, neurofeedback, tendon vibration, virtual reality, haptic
Brief summary
Interventional study with minimal risks and constraints, prospective, monocentric.
Detailed description
Many patients with stroke have a severe motor deficit in the upper limb impacting their independence. Electroencephalogram (EEG) Neurofeedback is a re-education technique that improves cerebral plasticity and motor gain in these people during the chronic phase of stroke. The visual feedback usually used tends to diminish the subject's attentional resources, while the proprioceptive feedbacks appear to be more effective on cortical excitability. Vibration feedback inducing movement illusion has been shown to be effective in healthy subjects, but has not been tested in people with stroke.
Interventions
OTHERVisual virtual Conditions
The objective is to evaluate if certain virtual visual conditions can increase the illusion of movement induced by the tendon vibration of the upper limb. Thirty healthy volunteers and 20 post-stroke subjects will test 3 different situations of vibration applications, with no EEG Neurofeedback session. It will be applied to the subject (healthy and post-stroke) according to a randomized order a vibrator for a few minutes on his non-dominant (or deficit) hand hidden from view, with a screen representing a static virtual hand, then a vibrator on his hand hidden with a screen representing an animated virtual hand, then a vibrator on his hand hidden with a screen representing an empty background.
OTHERStandard EEG
Twenty healthy volunteers test 3 separate electroencephalographic recording conditions without Neurofeedback. It will be applied to the subject an EEG headset recording brain activity during the application of vibration stimulation producing the illusion of movement on the non-dominant hand or during a task Mental imagery of the upper limb, or during the joint application of vibratory stimulation and a mental imaging task on the affected upper limb in a randomized order.
OTHERNeurofeedback Training Stroke Patients
The post-stroke subject is evaluated on clinical tests (FMA, ARAT, MAL, NHPT, Finger Tapping test) during the first visit. Then, he performs 12 sessions of NFB (on his deficit member) lasting 45 minutes, spread over 6 weeks, depending on the feedback modality that has been drawn randomly (visual or visuo-vibratory). A second visit after the first NFB session and a third visit after the last NFB session evaluates the motor skills of the trained upper limb (FMA, ARAT, MAL, NHPT, Finger Tapping test) and a satisfaction questionnaire is given to the subject for evaluate tolerance and satisfaction with the feedback modality assigned. Evaluation of changes of EEG sensorimotor rhythms at the end of the program.
Sponsors
Rennes University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy Volunteers : Major (age greater than or equal to 18 years) and under 80 years; Free, informed and written consent signed by the volunteer; Absence of clinical neurological antecedents that can interact with the achievement of the motor task or with the EEG signal. * Patients after stroke : Major (age greater than or equal to 18 years) and under 80 years;Ischemic or unilateral cerebral hemorrhagic hemorrhagic attack;Stroke dating back more than 6 months (considered as a delay where recovery of the upper limb to wait is less with conventional rehabilitation);Mild to severe upper limb deficiency: FMA-EU score ≤ 60; Free, informed and written consent signed by the patient or a member of his entourage (in the case of a patient able to understand the information and to express his / her consent but presenting motor difficulties leading to an invalid signature).
Exclusion criteria
* Healthy Volunteers : major persons subject to legal protection, persons deprived of their liberty * Patients after stroke : Ischemic or hemorrhagic involvement of posterior fossa (brainstem, cerebellum);Complete motor deficiency of the upper limb (FMA-UE = 0);Epicritic and proprioceptive anesthesia;Understanding difficulties limiting participation in the study;Major persons subject to legal protection, persons deprived of their liberty
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Relative Power of Event Related Desynchronization in µ et beta EEG bands of healthy controls and stroke participants | throught study completion, in the 5th week after the onset of the experiment for each participant | The relative increase of Event Related Desynchronization (ERD) relative power sensorimotor rhythms (µ et beta bands) in EEG during the last session of NeuroFeedBack in the motor cortex, between motor imagery and rest, measured in microvolt |
Countries
France
Outcome results
None listed