Measurement and Analysis of Yes and No Responses by Auditory Stimuli Questions in Human EEG
2007
Patients with severe physical disorders but who are cognitively intact find it difficult to communicate with the outside world. Researches on the brain-computer interface (BCI) are aimed to help such patients. This study analyzes the characteristics of brainwaves when a subject thinks of a "yes" or "no" response to an auditory stimuli question. Experiment using auditory stimuli of the form of questions is performed. We discriminate between the activities of the brainwaves of the "yes" and "no " responses using the alpha power. Nineteen healthy subjects (7 females and 12 males), aged between 20 and 35 years, volunteered to participate in the experiment. In the experiment, for 14 out of 19 subjects (73.68%), the average alpha power for the "yes" response is lower than that for the "no " response.
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