Systems and methods for detecting deception by measuring brain activity
First Claim
1. A method for determining whether brain activity of a human subject in response to a stimulus of interest is characteristic of a state of interest, comprising the steps of:
- (a) providing a stimulus of interest;
(b) measuring brain activity of said subject in response to said stimulus during a period of interest;
(c) comparing the brain activity in at least one brain region when measured during said period of interest with a predetermined control level of activity; and
(d) determining whether the brain activity in said at least one brain region when measured during said period of interest is characteristic of said state of interest based upon said comparison.
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Accused Products
Abstract
Methods for determining whether the brain activity of a human subject in response to a stimulus of interest or question of interest is characteristic of a state of interest, such as a deceptive state or a truthful state, are disclosed. Some methods include the use of control questions, including truthful control questions and deceptive control questions, to provide bases for comparison for responses to stimuli of interest or questions of interest. In some methods, brain maps are generated and compared. Also disclosed are systems for detecting deception by measuring brain activity.
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Citations
66 Claims
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1. A method for determining whether brain activity of a human subject in response to a stimulus of interest is characteristic of a state of interest, comprising the steps of:
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(a) providing a stimulus of interest;
(b) measuring brain activity of said subject in response to said stimulus during a period of interest;
(c) comparing the brain activity in at least one brain region when measured during said period of interest with a predetermined control level of activity; and
(d) determining whether the brain activity in said at least one brain region when measured during said period of interest is characteristic of said state of interest based upon said comparison. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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6. A method for determining whether brain activity of a human subject during a response to a question of interest is characteristic of a truthful or a deceptive response, comprising the steps of:
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(a) asking said subject at least one question of interest, allowing said subject to provide a response of interest during a period of interest, wherein it is not known beforehand whether said response of interest is truthful or deceptive, and measuring brain activity of said subject during said period of interest;
(b) comparing the brain activity in at least one brain region when measured during said period of interest with a predetermined control level of activity; and
(c) determining whether the brain activity in said at least one brain region when measured during said period of interest is characteristic of a truthful or a deceptive response based upon said comparison.
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15. A method for determining whether brain activity during a response of a human subject to a question of interest is characteristic of a truthful or a deceptive response, comprising the steps of:
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(a) asking said subject at least one truthful control question, allowing said subject to provide a response which is known to be a truthful response, and measuring brain activity of said subject during a truthful control period;
(b) asking said subject at least one deceptive control question, allowing said subject to provide a response which is known to be a deceptive response, and measuring brain activity of said subject during a deceptive control period;
(c) asking said subject at least one question of interest, allowing said subject to provide a response of interest during a period of interest, wherein it is not known beforehand whether said response of interest is truthful or deceptive, and measuring brain activity of said subject during said period of interest;
(d) identifying at least one brain region exhibiting a statistically significant difference in brain activity in said subject when measured during said truthful control period and when measured during said deceptive control period;
(e) comparing brain activity in said at least one brain region when measured during said period of interest with brain activity during at least one of said truthful control period and said deceptive control period; and
(f) determining whether brain activity in said at least one brain region when measured during said period of interest is characteristic of a truthful or a deceptive response based upon said comparison. - View Dependent Claims (16, 17, 36, 37)
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49. A system for determining whether brain activity of a human subject during a response to a question of interest is characteristic of a truthful or a deceptive response, comprising:
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(a) means for providing a stimulus of interest;
(b) a brain activity measuring device;
(c) a response measuring device; and
(c) a system processor connected to said means for providing a stimulus, said brain activity measuring device and said response measuring device for receiving and processing data therefrom, and for statistically analyzing said data. - View Dependent Claims (50, 51, 53, 55, 60, 61, 62, 63, 64, 65)
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52. A system for determining whether brain activity of a human subject during a response to a question of interest is characteristic of a truthful or a deceptive response, comprising:
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(a) a brain activity measuring device;
(b) a SCR measuring device;
(c) a system processor connected to said brain activity measuring device and said SCR measuring device for receiving and processing data therefrom; and
(d) a shielded data cable for transmitting data from said SCR measuring device to said system processor. - View Dependent Claims (56, 57, 58, 59)
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54. A system for measuring the SCR of a human subject during magnetic resonance imaging comprising the system of claim S05 wherein said brain activity measuring device is a magnetic resonance imaging device.
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66. A partition for the doorway of a shielded room containing a brain imaging device comprising:
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a panel comprising an electrically conductive material and having two sides and a periphery substantially corresponding in shape to said doorway;
one or more electrically conductive contacts located at one or more portions of said periphery to provide an electrical contact between said panel and said doorway;
a first electrical connector on a first side of said panel; and
a second electrical connector on a second side of said panel;
wherein said first and second electrical connectors are coupled to each other and whereby data can be transmitted from said first side to said second side of said panel.
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Specification