A Parkinson's patient played the clarinet while undergoing surgery, allowing doctors to see, and hear, immediate results.

Denise Bacon, 65, showed instant improvement in her finger movements as surgeons stimulated her brain with an electrical current.

The retired speech and language therapist, from Crowborough, East Sussex , underwent deep brain stimulation (DBS) after suffering Parkinson's symptoms, in a four-hour operation at London's King's College Hospital

These symptoms included slowness of movement, rigidity and muscle stiffness.

She had been diagnosed in 2014 and it has impacted her ability to walk, swim, dance and play her clarinet.

But the operation led to instant improvements in her fingers, which allowed her to play the clarinet easily.

Ms Bacon underwent a four-hour o

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