This disclosure includes various vibrating patches that may include: a flexible layer having an adhesive backing and a circuit having a battery, a vibrating device, and an adjustable speed controller having a mechanically adjustable user input device configured to receive user input indicative of a desired frequency of vibration, where the adjustable speed controller is configured to vary the frequency of vibration of the vibrating device at least partly based on the user input. Some of the present vibrating patches include a timing circuit configured to modulate power and/or voltage from the battery to the vibrating device. Others of the present vibrating patches include or are disposed in or within an adjustable headband.
NEURONAL INTERFERENCE DEVICES