An event-related optical signal device and a brain-computer interface system

摘要

An event-related optical signal (EROS) device 10 for a brain-computer interface, the device comprising at least one light source 6 configured to flash at a rate of at least 1000 hertz at a wavelength such that the light is scattered by brain tissue. Additional embodiments also include means of detecting and outputting a response, and the interpreting of this output by a computer, which may apply machine learning. The wavelength used may be between 700nm and 900nm such that human skin and bone are mostly transparent to it, in the near infrared (NIR) area of the spectrum. The device may be a wearable headset and all of the components may be arranged on the same circuit board. The light source may be positioned 4 to 8 centimeters from the detection means.