Verifying the Efficacy of a Tactile Perceptual Discrimination Stimulation Approach for Individuals with Finger Sensorimotor Dysfunction: A Case Report and Literature Review

Purpose: To investigate the effects of tactile discrimination feedback sensory compensatory system device training on finger sensory-based motor dysfunction after cervical cord injury. Case Presentation:A patient with finger sensorimotor dysfunction following cervical cord injury underwent treatment using an ABB design, with each treatment period lasting 1 week.The patient performed daily pegboard, building block stacking, and material identification task tests over a 1-week period.The Purdue Pegboard Test, a behavioural measure, and the Numbness Numerical Rating Scale, a sensory function assessment tool, were administered daily.From these tests, the Tau-U, a statistical measure of the intervention effect size, was calculated.Additionally, as a physiological measure, an electroencephalogram was recorded daily for 1 min during the pegboard task.The coherence values of the electroencephalography frequency bands of the theta (4-8 Hz) and mu (8-12 Hz) waves of Pz-Fz, a sensorimotor information processing index, were calculated, and the mean value of each phase was calculated for comparison and validation.Result: After the device intervention, the theta and mu waves in the sensorimotor domain were attenuated.Motor function and numbness of the right finger improved. Conclusion:Training with a tactile discrimination feedback sensory compensatory system device may improve finger sensorimotor function and contribute to shortening treatment duration.