Application US20180049896

SYSTEM AND METHOD FOR NONINVASIVE IDENTIFICATION OF COGNITIVE AND BEHAVIORAL GOALS
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US20180049896

1. A brain machine interface system for use with an electroencephalogram to identify a behavioral intent of a person, the system comprising: (6) (4)

an electroencephalogram configured to sense electromagnetic signals generated by a brain of a person, wherein the electromagnetic signals comprise a time component and a frequency component;

a monitor configured to monitor a response of the person to a stimulus and a characteristic of the stimulus;

a synchronization module configured to synchronize the sensed electromagnetic signals with the response and the characteristic to determine a set of electromagnetic signals corresponding to the monitored response of the person and the characteristic;

a processor configured to process the set of electromagnetic signals and to extract feature vectors, wherein each of the feature vectors define a class of behavioral intent; and wherein the processor is further configured to determine the behavioral intent of the person based on the feature vectors.

2. The brain machine interface system of claim 1, wherein the monitor is an eye tracking monitor to determine that the person is looking at a visual stimulus. (0)

3. The brain machine interface system of claim 1, wherein the monitor is an auditory monitor to determine the presence of an auditory stimulus based on an auditory volume corresponding to the auditory stimulus. (0)

4. The brain machine interface system of claim 1, further comprising: (0) (1)

5. The brain machine interface system of claim 1, further comprising: (0) (3)

6. The brain machine interface system of claim 1, further comprising: (0) (1)

7. The brain machine interface system of claim 1, further comprising: (0) (1)

8. A brain machine interface comprising: (3) (7)

an electroencephalogram configured to sense electromagnetic signals generated by a brain of a person, wherein the electromagnetic signals comprise a time component and a frequency component;

an eye tracking monitor configured to determine that the person is looking at a first stimulus;

an auditory monitor configured to determine the presence of a second stimulus based on an auditory volume corresponding to the second stimulus;

a processor configured to segment the electromagnetic signals into a first segment and a second segment, wherein the first segment corresponds to the first stimulus and the second segment corresponds to the second stimulus;

wherein the processor is further configured to process the first segment and the second segment and wherein the processor is configured to:

extract a first set of feature vectors from the first segment and a second set of feature vectors from the second segment, wherein each of the first set and the second set of feature vectors define a class of behavioral intent; and

determine a first behavioral intent based on the first set of feature vectors and a second behavioral intent based on the second set of feature vectors.

9. The brain machine interface of claim 8, wherein the first stimulus is one of a threat stimulus, friendly stimulus, or a neutral stimulus. (1) (0)

11. The brain machine interface of claim 8, wherein the second stimulus is one of a near range stimulus, a mid range stimulus, and a far range stimulus. (1) (0)

13. The brain machine interface of claim 8, wherein the processing further comprises applying a wavelet transformation to the electric signals to determine that a first frequency and a second frequency are present in a first frequency band. (1) (0)

15. A method for identifying a behavioral intent of a person, the method comprising: (2) (4)

sensing, by an electroencephalogram attached to a person, electromagnetic signals generated by a brain of the person, wherein the electromagnetic signals comprise a time component and a frequency component;

detecting, by a monitor, an eye movement of the person and a volume of an auditory stimulus, wherein the eye movement corresponds to a visual stimulus;

extracting, by a processor, a first set of feature vectors corresponding to the visual stimulus and a second set of feature vectors corresponding to the auditory stimulus, wherein each of the feature vectors define a class of behavioral intent; and

determining, by the processor, a behavioral intent of the person based on the first set of feature vectors and the second set of feature vectors.

16. The method of claim 15, further comprising: (0) (1)

17. The method of claim 15 further comprising: (1) (2)

pre-processing, by the processor, the electromagnetic signals, wherein the pre-processing comprises filtering and referencing the electromagnetic signals; and

extracting, by the processor, spectral features from the electromagnetic signals.

18. The method of claim 17 further comprising: (1) (1)

determining, by the processor, a first frequency band and a second frequency band of the spectral features.

19. The method of claim 18 further comprising: (1) (2)

applying, by the processor, a wavelet transformation to the electromagnetic signals, wherein the wavelet transformation is applied over a period of time corresponding to the time component;

determining, by the processor, a bicoherence element to define a measure of phase coupling based on the first frequency band and the second frequency band, wherein the measure of phase coupling corresponds to the first set and the second set of the feature vectors.

20. The method of claim 19 further comprising: (0) (1)

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Application US20180049896

SYSTEM AND METHOD FOR NONINVASIVE IDENTIFICATION OF COGNITIVE AND BEHAVIORAL GOALS

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