Disclosed are a brain activity measuring device for determining the user's intention by analyzing brain activities, and a neural user interface (NUI) device including an interface section for executing the user-intended function understood in the brain activity measuring device and outputting the result, wherein the brain activity measuring device includes; a light irradiating section for irradiating photons to the cerebral cortex; a light detecting section for detecting the photons emitted out of the human body after the interaction with the cerebral cortex and detecting a change in physical properties of the photons; and an analyzing section for analyzing the change in physical properties of the photons detected in the light detecting section and generating brain activity data to determine the user's intention.
METHOD AND DEVICE FOR NEURAL USER INTERFACE AND BRAIN ACTIVITY MEASURING DEVICE FOR THE SAME