An incredible video captures the precise moment a man stops shaking as his Parkinson’s is cured.

In what doctors are calling a “medical milestone,” the video shows Filipino patient Jose Alvarez undergoing a groundbreaking brain operation at a hospital in Bengaluru, India, all while wide awake.

The YouTube video — posted on SWOC Brain on Wednesday — shows the man’s hands and legs twitching uncontrollably due to the crippling disease, a progressive nervous system disorder defined by muscle rigidity, tremors and changes in speech and gait, according to the Mayo Clinic.

Then the unthinkable happens: Alvarez miraculously stops shaking post-operation.

“My speech is better,” says a stunned Alvarez, who can be seen raising his arms sans any spasms in front of the equally astonished surgical team.

Though hard to believe, the operation is supported by hard science. The surgeons performed a right-sided stereotactic MRI-guided pallidotomy, a cutting-edge procedure that involves burning a circuit into the patient’s brain, reports SWOC Brain.

The operation proved life-changing for Alvarez, whose Parkinson’s had been so debilitating before the procedure that he was forced to quit his job as a guitar player. Now, the rehabilitated musician is “able to stand and walk, perform my routine activities like bathing, dressing, eating food and drinking water,” reports a happy Alvarez. Not only that, but his hand and leg tremors have ceased entirely and he can reportedly speak without any difficulty.

“Doctors have given me a new lease of life,” says Alvarez. “Life has been my best so far but I now experience freedom.”