Galvanic anti-neuralgic headband made up of a series of 24 alternate zinc and copper discs mounted onto a felt and ribbon band. The headband was tied around the head, with the discs resting on the temples, where perspiration would act on the discs by producing a mild galvanic current

Galvanic anti-neuralgic headband made up of a series of 24 alternate zinc and copper discs mounted onto a felt and ribbon band. The headband was tied around the head, with the discs resting on the temples, where perspiration would act on the discs by producing a mild galvanic current