London, UK – In an extraordinary scene at King's College Hospital, the strains of a clarinet echoed through an operating theatre as 65-year-old Denise Bacon underwent deep brain stimulation (DBS) surgery for Parkinson's disease. The unique performance served a vital purpose: providing surgeons with immediate, audible confirmation of the procedure's success in restoring her motor function.

Ms. Bacon, a retired speech and language therapist from East Sussex, was diagnosed with the progressive neurodegenerative disorder in 2014. Parkinson's, which causes tremors, slowness of movement (bradykinesia), and muscle rigidity, had gradually stripped her of the ability to enjoy her active hobbies, including jogging, swimming, dancing, and crucially, playing the clarinet, an instrument she had to put down five years ago.

The procedure, performed by Professor Keyoumars Ashkan, involved implanting tiny electrodes into a specific region of Ms. Bacon's brain through small holes drilled in her skull. As the brain itself lacks pain receptors, Ms. Bacon remained awake under local anaesthetic, a necessary condition for surgeons to assess the real-time effect of the electrical stimulation on her symptoms.

The results were instantaneous and dramatic. As the current was switched on to the electrodes in the left hemisphere, Ms. Bacon's right-hand fingers immediately began to move with greater ease, allowing her to play the clarinet. A similar effect was observed on her left hand when the right side of her brain was stimulated.

Professor Ashkan commented that DBS is a well-established treatment for movement disorders, but witnessing the immediate improvement in Ms. Bacon’s finger dexterity and musical performance was “very pleasing.”

The electrical impulses are supplied by a rechargeable pulse generator, a device implanted in her chest, which can last up to 20 years. This device is designed to monitor her brain activity and automatically adjust the stimulation intensity as needed.

Ms. Bacon expressed her delight, noting the ease with which she could move her hands and the resulting improvement in her playing ability. “I'm already experiencing improvements in my ability to walk,” she shared, adding, “I'm keen to get back in the swimming pool, and on the dance floor to see if my abilities have improved there.” The successful surgery offers a renewed chance for Ms. Bacon to reclaim her beloved hobbies, marking a harmonious victory over her symptoms.