Hello, I hope you are having a great day Mohamed! I'm letting other people will weigh in on this discussion. Since I'm a care partner to a person with Parkinson's I'm not an expert. In the mean time, I thought you would enjoy the following article from our staff editors from 2021 on dbs:
https://parkinsonsdisease.net/living/deep-brain-stimulation-benefits
Hope this helps! All the best, Suzanne Troy, ParkinsonsDisease.net team member