Communication system for the disabled in which a display target is selected by encephalogram response
First Claim
1. A method of oculo-encephalographic communication comprising the steps ofproviding a plurality of visual stimuli and a unique code signal corresponding to each of said visual stimuli,obtaining an EEG signal of a viewer while viewing said visual stimuli,adaptively identifying one of said unique code signals with corresponding ones of said EEG signals, and adaptively identifying one of said visual stimuli viewed by said viewer from each identified code signal.
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Abstract
A method of oculo-encephalographic communication in which a plurality of optical stimuli provide unique code which can be identified from the EEG of viewer. The code is preferably an M-sequence binary code whereby simultaneous testing can be employed to identify the viewed optical stimulus.
A special binary sequence, or M-sequence, is utilized from which a viewed element be identified through use of a response template or sample response as predetermined from the user'"'"'s encephalogram.
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Citations
8 Claims
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1. A method of oculo-encephalographic communication comprising the steps of
providing a plurality of visual stimuli and a unique code signal corresponding to each of said visual stimuli, obtaining an EEG signal of a viewer while viewing said visual stimuli, adaptively identifying one of said unique code signals with corresponding ones of said EEG signals, and adaptively identifying one of said visual stimuli viewed by said viewer from each identified code signal.
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3. An oculo-encephalographic communication system comprising
a visual display for projecting a plurality of independently controlled visual stimuli, means for controlling said plurality of visual stimuli whereby each stimulus transmits a unique code signal, means for obtaining an EEG signal from a viewer while viewing said display, and means for adaptively identifying a unique code with a corresponding one of said EEG signals thereby identifying one of said visual stimuli viewed by said viewer.
Specification