SINGLE TRIAL DETECTION IN ENCEPHALOGRAPHY
First Claim
1. A method for interpreting sampled brain activity signals of a subject subjected to at least a first stimulus and a second stimulus, comprising:
- (a) identifying, using a processing arrangement, one or more sets of samples from the sampled brain activity signals corresponding to a first response to the first stimulus;
(b) identifying one or more sets of samples corresponding to a second response to the second stimulus; and
(c) determining two or more spatial weighting coefficients such that a linear response maximally discriminates between the one or more sets of samples corresponding to the first response and the one or more sets of samples corresponding to the second response.
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Accused Products
Abstract
An EEG cap (8) having 64 or 128 electrodes (10) is placed on the head of the subject (11) who is viewing CRT monitor (14). The signals on each channel are amplified by amplifier (17) and sent to an analog-to-digital converter (20). PC (23) captures and records the amplified signals and the signals are processed by signal processing PC (26) performing linear signal processing. The resulting signal is sent back to a feedback/display PC (29) having monitor (14). An EEG cap (8) having 64 or 128 electrodes (10) is placed on the head of the subject (11) who is viewing CRT monitor (14). The signals on each channel are amplified by amplifier (17) and sent to an analog-to-digital converter (20). PC (23) captures and records the amplified signals and the signals are processed by signal processing PC (26) performing linear signal processing. The resulting signal is sent back to a feedback/display PC (29) having monitor (14).
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Citations
20 Claims
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1. A method for interpreting sampled brain activity signals of a subject subjected to at least a first stimulus and a second stimulus, comprising:
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(a) identifying, using a processing arrangement, one or more sets of samples from the sampled brain activity signals corresponding to a first response to the first stimulus; (b) identifying one or more sets of samples corresponding to a second response to the second stimulus; and (c) determining two or more spatial weighting coefficients such that a linear response maximally discriminates between the one or more sets of samples corresponding to the first response and the one or more sets of samples corresponding to the second response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for interpreting sampled brain activity signals of a subject subjected to at least a first stimulus and a second stimulus, comprising:
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an input adapted to receive sampled brain activity signals; and a data processor, coupled to the input, programmed to; receive the sampled brain activity signals from the input; identify one or more sets of samples from the sampled brain activity signals corresponding to a first response to the first stimulus; identify one or more sets of samples corresponding to a second response to the second stimulus; and determine two or more spatial weighting coefficients such that a linear response maximally discriminates between the one or more sets of samples corresponding to the first response and the one or more sets of samples corresponding to the second response. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification