System and method of assessment of the efficacy of treatment of neurological disorders using the electroencephalogram
First Claim
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1. A system for assessing the efficacy of treatment of a neurological disorder comprising:
- at least two electrodes for acquiring electrophysiological signals from the body suffering from a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz;
a processor for calculating from said electrophysiological signals at least one feature relating to the efficacy of said treatment without referencing said at least one feature to a normative data set, said at least one feature being a measure of a self-reported mood or anxiety score.
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Abstract
Disclosed is a system and method of assessing the efficacy of treatment of neurological or psychological disorders. The preferred embodiment uses at least two surface electrodes to acquire EEG signals from the surface of a patient'"'"'s body, a processor for computing from the EEG signals various features and indices that are representative of the patient'"'"'s neurological or psychological state. Changes in these parameters may be used to assess the efficacy of treatment and to modify the treatment to optimize the resultant patient state.
65 Citations
38 Claims
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1. A system for assessing the efficacy of treatment of a neurological disorder comprising:
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at least two electrodes for acquiring electrophysiological signals from the body suffering from a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz; a processor for calculating from said electrophysiological signals at least one feature relating to the efficacy of said treatment without referencing said at least one feature to a normative data set, said at least one feature being a measure of a self-reported mood or anxiety score. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for assessing the efficacy of treatment of a neurological disorder comprising:
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at least two electrodes for acquiring electrophysiological signals from a body suffering from a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz; data acquisition circuitry for acquiring from said electrodes a first electrophysiological signal representing a baseline condition and a second electrophysiological signal representing a subsequent condition; a processor for calculating from said electrophysiological signals received from the data acquisition circuitry; (a) at least one feature relating to the patient state during the baseline condition, without referencing said at least one feature relating to the patient state during the baseline condition to a normative data set, said at least one feature relating to the patient state during the baseline condition being a measure of a self-reported mood or anxiety score; (b) at least one feature relating to the patient state during the subsequent condition, without referencing said at least one feature relating to the patient state during the subsequent condition to a normative data set, said at least one feature relating to the patient state during the subsequent condition being a measure of a self-reported mood or anxiety score; and (c) the difference between said features relating to the baseline and subsequent conditions, such that said difference relates to the efficacy of said treatment.
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19. A system for optimizing the efficacy of treatment of a neurological disorder comprising:
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at least two electrodes for acquiring electrophysiological signals from a body suffering from a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz; processor for calculating from said electrophysiological signals at least one feature relating to the efficacy of said treatment without referencing said at least one feature to a normative data set, said feature being a measure of a self-reported mood or anxiety score; data acquisition circuitry for acquiring said electrophysiological signals from said electrodes and converting said electrophysiological signals to a form usable by said processor; a processor for varying the treatment parameters of a neurostimulator in order to maximize the calculated treatment efficacy.
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20. A method of assessing the efficacy of treatment of a neurological disorder comprising the steps of:
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acquiring electrophysiological signals from a body suffering from a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, said signals being acquired through electrodes placed on the body, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz; calculating from said electrophysiological signals at least one feature relating to the efficacy of said treatment without referencing said at least one feature to a normative data set, said feature being a measure of a self-reported mood or anxiety score. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method of assessing the efficacy of treatment of a neurological disorder comprising:
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positioning a least two electrodes on a body being treated for a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz; acquiring a first electrophysiological signal from the body at a baseline condition; acquiring a second electrophysiological signal from the body during a subsequent condition; calculating at least one feature relating to the patient state during the baseline condition without referencing said at least one feature relating to the patient state during the baseline condition to a normative data set, said at least one feature relating to the patient state during the baseline condition being a measure of a self-reported mood or anxiety score; calculating at least one feature relating to the patient state during the subsequent condition without referencing said at least one feature relating to the patient state during the subsequent condition to a normative data set, said at least one feature relating to the patient state during the subsequent condition being a measure of a self-reported mood or anxiety score; calculating at the difference between the features calculated during the baseline and subsequent conditions, such that the difference relates to the efficacy of said treatment.
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38. A method of optimizing the efficacy of treatment of a neurological disorder comprising:
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positioning at least two electrodes on a body being treated for a neurological disorder which is one or more of depression, major depressive disorder, obsessive compulsive disorder, dementia, mood disorders and anxiety disorders, wherein one of said at least two electrodes for acquiring electrophysiological signals from the body is positioned at electrode position Fpz; acquiring electrophysiological signals from the body; calculating at least one feature relating to the efficacy of said treatment without referencing said at least one feature to a normative data set, said at least one feature being a measure of a self-reported mood or anxiety score; varying treatment parameters in order to maximize the calculated treatment efficacy.
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Specification