Non-invasive electrical vestibular nerve stimulation for improving sleep quality and cognitive functions in patients with Parkinsons disease

INTERVENTION: Intervention1: Non‐invasive electrical vestibular stimulation: Electrodes placed on the mastoid process 0.1 to 1 mA levels of stimulation Non‐invasive for control group sham stimulation will be given Control Intervention1: sham stimulation: device looks same but it wont give stimulation CONDITION: Health Condition 1: G318‐ Other specified degenerative diseases of nervous system PRIMARY OUTCOME: Insomnia severity indexTimepoint: baseline and after 8 weeks of intervention SECONDARY OUTCOME: cognitive functions declineTimepoint: baseline & 8 weeks INCLUSION CRITERIA: Patients aged 60 to 80 years who are willing to participate will be included in the study. Participants will be included if they fulfilled the Hoehn & Yahr Classification of Disability 79,80 stage 1to 2 who could ambulate with or without an assistive device for at least 50 feet and were able to get up and down from the floor with minimal assist or less and score 24 or above on the Folstein Mini‐Mental State Exam and ISI scores 5 or more.