MedPath

Stimulate One Hand to Improve Tactile Perception on the Other

Not Applicable
Recruiting
Conditions
Post-stroke Sensory Deficits at the Hand
Interventions
Procedure: Repetitive somatosensory stimulation (RSS)
Procedure: Sham Repetitive somatosensory stimulation (RSS)
Registration Number
NCT06149325
Lead Sponsor
Hospices Civils de Lyon
Brief Summary

The study is a comparative study, to show that the administration of RSS stimulation on one hand compared to the administration of strategy Sham stimulation, results in an temporary improvement in the tactile acuity of the other hand in patients with tactile acuity impairment of the hand due to stroke.

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
25
Inclusion Criteria
  • Age: 30-80 years old

    • Patients with diagnosis of unilateral (both right and left) ischemic or hemorrhagic stroke
    • Stroke event dates at least 3 months before the date of inclusion to the study
    • Severe-to-mild sensory loss at the fingers of the hand contralateral to the stroke lesion (affected hand)
    • Capacity to provide written consent
    • Affiliation to a social security scheme
  • Non inclusion Criteria * :

    • Sensory impairment attributable to diabetes history, peripheral vascular disease or neuropathy
    • Severe speech disorder, global aphasia and/or cognitive impairment
    • Multiple stroke events
    • Bilateral stroke event
    • History of neurological or psychiatric illness
    • Other experimental procedure is forbidden during the weeks where the study is performed
    • Pregnant, parturient and lactating women
    • Persons deprived of their liberty
    • Adult persons subject to a legal protection measure: guardianship, curatorship
    • Persons in psychiatric care
    • Congenital or acquired malformation/injury of the test fingers
    • Impossibility to maintain hand position necessary for the tests due to severe spasticity
Exclusion Criteria

• Severe impairment of the sensibility of the index finger of the spared hand preventing the administration of the RSS

Study & Design

Study Type
INTERVENTIONAL
Study Design
CROSSOVER
Arm && Interventions
GroupInterventionDescription
Sham Repetitive somatosensory stimulation (RSS), then RSSSham Repetitive somatosensory stimulation (RSS)Adult patients suffering from post-stroke sensory deficits at the hand. Each participant will participate to the study on two different days, at least a week apart from each other. The length of the experimental session on these two days will be the same: 2 hours in the morning, to perform Pre-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity, and 3 hours in the afternoon, including 45 minutes of stimulation (RSS or Sham) and 2 hours of Post-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity. In total, the length of the participation of each patient will be of 10 hours, spread on two days.
Repetitive somatosensory stimulation (RSS), then SHAMSham Repetitive somatosensory stimulation (RSS)Adult patients suffering from post-stroke sensory deficits at the hand. Each participant will participate to the study on two different days, at least a week apart from each other. The length of the experimental session on these two days will be the same: 2 hours in the morning, to perform Pre-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity, and 3 hours in the afternoon, including 45 minutes of stimulation (RSS or Sham) and 2 hours of Post-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity. In total, the length of the participation of each patient will be of 10 hours, spread on two days.
Repetitive somatosensory stimulation (RSS), then SHAMRepetitive somatosensory stimulation (RSS)Adult patients suffering from post-stroke sensory deficits at the hand. Each participant will participate to the study on two different days, at least a week apart from each other. The length of the experimental session on these two days will be the same: 2 hours in the morning, to perform Pre-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity, and 3 hours in the afternoon, including 45 minutes of stimulation (RSS or Sham) and 2 hours of Post-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity. In total, the length of the participation of each patient will be of 10 hours, spread on two days.
Sham Repetitive somatosensory stimulation (RSS), then RSSRepetitive somatosensory stimulation (RSS)Adult patients suffering from post-stroke sensory deficits at the hand. Each participant will participate to the study on two different days, at least a week apart from each other. The length of the experimental session on these two days will be the same: 2 hours in the morning, to perform Pre-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity, and 3 hours in the afternoon, including 45 minutes of stimulation (RSS or Sham) and 2 hours of Post-evaluation of the tactile acuity, absolute detection, overall hand functionality and manual dexterity. In total, the length of the participation of each patient will be of 10 hours, spread on two days.
Primary Outcome Measures
NameTimeMethod
Tactile acuity : composite of 2point discrimination test (2PDT) and Absolute threshold detection test after 45minutes of RSSImmediate after the 45 minutes of RSS

To show that RSS applied for 45 minutes on the index finger of the spared hand in stroke patients suffering from sensory deficits improves their tactile sensitivity on the affected (unstimulated) hand, measured in terms of improved spatial discrimination and/or improved absolute detection.

Secondary Outcome Measures
NameTimeMethod
Jebsen-Taylor hand function test (JTHFT)Immediate after the 45 minutes of RSS

Overall functionality of the hand, especially with regard to handling objects

Manual dexterity Pegboard testImmediate after the 45 minutes of RSS

Assessment of manual dexterity of the affected unstimulated hand (as well as of the spared hand)

Trial Locations

Locations (1)

Groupement Hospitalier du Sud - Hôpital Henry Gabrielle

🇫🇷

Saint-Genis-Laval, France

© Copyright 2025. All Rights Reserved by MedPath