US Patent 11172859 Wearable brain activity device with auditory interface

This invention is a wearable brain activity device with electrodes held on a person's head by a frame comprising a ring portion which encircles the person's head and an arc portion which loops over the top of the person's head. Data from the electrodes is used to analyze the person's brain activity within a frequency band of 0.5-4 Hz. The device includes a speaker or vibrating member which is used to help to guide the person's brain activity from a first pattern to a second pattern.