How Highly Focused Sound Waves Steadied A Farmer’s Trembling Hand

Alan Dambach developed tremors that caused his hands to shake uncontrollably. His condition made it difficult to work on his family

Tree farmer Alan Dambach’s tremor got so bad he couldn’t read his own signature. Then he tried a new procedure that uses sound waves to destroy specific brain cells.

(Image credit: Ross Mantle for NPR)

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