The Effect of Somatosensory Cue on Postural Stability in Blinded Persons

The Effect of Somatosensory Cue on Postural Stability in Blinded Persons

Blind Adults that willing to participate in the study will be tested with well-established measuring techniques of Balance control using force plate in the movement and Rehabilitation Laboratory at Ben-Gurion University. An automated algorithm will be used to extract standardized stabilogram-diffusion parameters from each of the COP data sets collected during quiet standing. These parameters include diffusion coefficients, critical displacement, critical time and scaling exponents for both lateral and anterior-posterior sway directions (Collins & De Luca, 1993). the subjects will be tested in 3 task conditions (eyes blindfolded, eyes blindfolded holding stick, eyes blindfolded holding a dog). Participants will be required to stand on the platform 10 times for 30 s For each trial, they will be instructed to sway as little as possible.

Inclusion Criteria:

• Blind persons
• Able to stand safely for 30 seconds
• Able to walk independently
• Hip OA prior THA

Exclusion Criteria:

• Stroke or other neurological diseases
• Orthopedic surgery at the past year