Modifying a psychophysiological state of a subject

• US 9,675,291 B2
• Filed: 03/06/2009
• Issued: 06/13/2017
• Est. Priority Date: 03/14/2008
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Johnson, Mark Thomas, Aarts, Ronaldus Maria, Braspenning, Ralph
• Primary Examiner(s): Matthews, Christine H
• Assistant Examiner(s): WILSON, KAYLEE R
• Application Number:
  US12/920,879
• Publication Number:
  US 20110004047A1
• Time in Patent Office: 3,021 Days
• Field of Search: 600509, 600 2-286, 607 1, 607 80
• CPC Class Codes: A61B 5/02405 Determining heart rate variability
• CPC Class Codes: A61B 5/16 Devices for psychotechnics using teaching or educational appliances G09B1/00 - G09B7/00; Testing reaction times ; Devices for evaluating the psychological state
• CPC Class Codes: A61B 5/165 Evaluating the state of mind, e.g. depression, anxiety
• CPC Class Codes: A61B 5/349 Detecting specific parameters of the electrocardiograph cycle

Abstract

An apparatus and method for modifying a psychophysiological state of a subject include detecting a psychophysiological measure of the subject; processing the detected physiological measure so as to provide a signal indicative of a psychophysiological state of the subject; and outputting at least one of an audio stimulus, visual stimulus, haptic stimulus, temperature stimulus and scent stimulus to the subject. The output stimulus may be derived from an audio-visual data signal provided to the apparatus. Further, the output stimulus is adjusting in real time based on the signal indicative of a psychophysiological state of the subject.

Claims

1. A system for modifying a psychophysiological state of a subject comprising:

a sensor configured to detect a psychophysiological measure of the subject;

a processor configured to process the detected psychophysiological measure so as to provide a signal indicative of the psychophysiological state of the subject;

a motive source coupled to the processor and configured to output a haptic stimulus according to a pattern that mimics a desired respiration pattern to gradually guide the subject to a desired psychophysiological state, wherein the desired respiration pattern is a regular or repeated pattern that gradually slows over time; and

a television configured to output an output stimulus being at least one or any combination of an audio stimulus and a visual stimulus to the subject, the output stimulus being derived from an audio-visual data signal provided by the television for displaying a content on the television,

wherein the processor is further configured to modulate the audio-visual data signal in real time based on the signal indicative of the psychophysiological state of the subject,

wherein the television comprises a display arranged in a split-screen configuration comprising plural definable parts, wherein the processor is further configured to display a portion of the content in an unaltered state in a first screen part of the split-screen display, and to display a further portion of the content in an altered state including distortions of characteristics of the content in a second screen part of the split-screen display in response to the modulated audio-visual data signal, and

wherein the motive source is further configured to provide feedback to the subject to follow the desired respiration pattern to reduce the distortions of the content displayed in the second screen part as the psychophysiological state of the subject gets closer to the desired psychophysiological state, and wherein the processor gradually restores the content displayed in the second screen part to the unaltered state to match the unaltered state of the content displayed in the first screen part in response to the subject changing the psychophysiological state to the desired psychophysiological state.

2. The system according to claim 1, wherein the output stimulus is configured to provide a signal indicative of a time at which the subject should perform a predetermined physical activity including when to breath in and out.

3. The system according to claim 1, wherein the sensor is further configured to detect a heart beat signal of the subject, and wherein the processor is further configured to determine a regularity of the detected heart beat signal so as to determine a psychophysiological state of the subject.

4. The system according to claim 1, wherein the subject is a first subject, the sensor is a first sensor, the processor is a first processor, and the output stimulus is a first output stimulus, the system further comprising:

a second sensor configured to detect a psychophysiological measure of a second subject;

a second processor configured to process the detected psychophysiological measure of the second subject so as to provide a signal indicative of a psychophysiological state of the second subject; and

the television is further configured to output a second output stimulus being at least one or any combination of a second audio stimulus and a second visual stimulus to the second subject, the second output stimulus being derived from a second audio-visual data signal provided by the television, the second processor being further configured to modulate the second audio-visual signal in real time based on the signal indicative of the psychophysiological state of the second subject and a current value of the second audio-visual data signal so as to derive a new value of the second output stimulus.

5. The system according to claim 4, wherein the second output stimulus and the first output stimulus are configured to provide a common output stimulus to the first subject and the second subject, the television being further configured to adjust the common output stimulus in real time based on the signal indicative of a psychophysiological state of the first subject and the signal indicative of the psychophysiological state of the second subject.

6. The system according to claim 5, wherein the first sensor is configured to detect a heart beat signal of the first subject, the second sensor is configured to detect a heart beat signal of the second subject, and wherein the first processor is further configured to determine a regularity of the detected heart beat signal of the first subject and the second processor is further configured to determine a regularity of the detected heart beat signal of the second subject, the common output stimulus being dependent on a difference between the regularity of the detected heart beat signal of the first subject and the regularity of the detected heart beat signal of the second subject.

7. The system of claim 1, wherein the distortions in the content in the second screen part occur only near a periphery of the content displayed on the display, the content extending to the periphery of the second screen part.

8. The system of claim 1, further comprising a lighting system for providing light around the display, wherein the processor is further configured to change the light around the display based on the psychophysiological state of the subject.

9. The system of claim 8, wherein the light varies independent of the content displayed on the display.

10. The system of claim 1, wherein the motive source is housed in a remote control that comprises a memory configured to store data on heart rate variability of the subject, and wherein the processor is further configured to identify the subject based on the stored data and select a preset parameter indicative of the psychophysiological state of the subject.

11. The system of claim 1, wherein the processor is further configured to reward the subject in response to detecting an increased relaxation state of the subject by increasing color vibrancy.

12. The system of claim 1, wherein the processor is further configured to change at least one of a shape and size of the further portion of the content displayed in the altered state on the display based on the psychophysiological state of the subject.

13. The system of claim 1, wherein the processor is further configured to allow the subject to change at least one of a shape and size of the content displayed on the display based on changing the psychophysiological state of the subject.

14. The system of claim 1, wherein the distortions include at least one of magnification of the further portion of the content, slanting the further portion of the content, making the further portion of the content wavy, and display the further portion of the content to appear to be at an end of a tunnel and making the content appear closer to a beginning of the tunnel as the distortions are reduced.

15. The system of claim 1, wherein the processor is configured to process the detected psychophysiological measure by detecting changes in periodicity of a heart beat signal of the subject including:

taking Fourier transforms of portions of the heart beat signal to form transformed signals,

taking a logarithm (log) of the transformed signals to form log signals,

taking inverse Fourier transforms of the log signals to form final signals,

identifying a peak of the final signal,

determining that the detected physiological psychophysiological measure indicates a low level of relaxation when the peak has a low value indicating a heart of the subject is beating at a heart rate which is not constant, and

determining that the detected psychophysiological measure indicates a high level of relaxation, higher than the low level, when the peak has a high value, higher than the low value, indicating the heart rate is constant.

16. A method for modifying a psychophysiological state of a subject comprising the acts of:

detecting a psychophysiological measure of the subject by a sensor;

processing the detected psychophysiological measure so as to provide a signal indicative of a psychophysiological state of the subject;

outputting an output stimulus being at least one or any combination of an audio stimulus, visual stimulus, haptic stimulus, temperature stimulus and scent stimulus to the subject, the output stimulus being derived from a television signal comprising an audio-visual data signal for displaying television content on a display;

modulating a current value of the audio-visual data signal in real time to form a modulated audio-visual data signal based on the signal indicative of a psychophysiological state of the subject and the current value of the audio-video data signal so as to derive a new value of the output stimulus;

displaying on a first part of the display a portion of the television content in an unaltered state, and displaying on a second part of the display a further portion of the television content in an altered state including distortions of characteristics of the television content in response to the modulated audio-visual data signal;

providing haptic feedback to the subject according to a pattern that mimics a desired respiration pattern to gradually guide the subject to a desired psychophysiological state, wherein the desired respiration pattern is a regular or repeated pattern that gradually slows over time, and to reduce the distortions of the content displayed on the second part of the display as the psychophysiological state of the subject gets closer to the desired psychophysiological state; and

gradually restoring the television content displayed on the second part of the display to the unaltered state to match the unaltered state of the television content displayed on the first part of the display in response to the subject changing the psychophysiological state to the desired psychophysiological state.

17. The method according to claim 16, wherein the output stimulus is configured to provide a signal indicative of a time at which the subject should perform a predetermined physical activity including when to breath in and out.

18. The method of claim 16, wherein the distortions include at least one of magnification of the further portion of the television content, slanting the further portion of the television content, making the further portion of the television content wavy, and display the further portion of the television content to appear to be at an end of a tunnel and making the television content appear closer to a beginning of the tunnel as the distortions are reduced.

19. The method of claim 16, wherein the processing act includes the acts of:

taking Fourier transforms of portions of a heart beat signal to form transformed signals;

taking a logarithm (log) of the transformed signals to form log signals;

taking inverse Fourier transforms of the log signals to form final signals;

identifying a peak of the final signal;

determining that the detected psychophysiological measure indicates a low level of relaxation when the peak has a low value indicating a heart of the subject is beating at a heart rate which is not constant; and

determining that the detected physiological psychophysiological measure indicates a high level of relaxation, higher than the low level, when the peak has a high value, higher than the low value, indicating the heart rate is constant.

20. A non-transitory computer readable medium comprising computer instructions which, when executed by a processor, configure the processor to perform the acts of:

detecting a psychophysiological measure of a subject by a sensor;

processing the detected psychophysiological measure so as to provide a signal indicative of a psychophysiological state of the subject;

outputting an output stimulus being at least one or any combination of an audio stimulus and a visual stimulus to the subject, the output stimulus being derived from a television signal comprising an audio-visual data signal for displaying television content on a display;

modulating a current value of the audio-visual data signal in real time to form a modulated audio-visual data signal based on the signal indicative of the psychophysiological state of the subject and the current value of the audio-video data signal so as to derive a new value of the output stimulus;

displaying on a first part of the display a portion of the television content in an unaltered state, and displaying on a second part of the display a further portion of the television content in an altered state including distortions of characteristics of the television content in response to the modulated audio-visual data signal;

providing haptic feedback to the subject according to a pattern that mimics a desired respiration pattern to gradually guide the subject to a desired psychophysiological state, wherein the desired respiration pattern is a regular or repeated pattern that gradually slows over time, and to reduce the distortions of the television content displayed on the second part of the display as the psychophysiological state of the subject gets closer to the desired psychophysiological state; and

gradually restoring the television content displayed on the second part of the display to the unaltered state to match the unaltered state of the television content displayed on the first part of the display in response to the subject changing the psychophysiological state to the desired psychophysiological state.

21. The non-transitory computer readable medium of claim 20, wherein the processing act includes the acts of:

taking Fourier transforms of portions of a heart beat signal to form transformed signals;

taking a logarithm (log) of the transformed signals to form log signals;

taking inverse Fourier transforms of the log signals to form final signals;

identifying a peak of the final signal;

determining that the detected psychophysiological measure indicates a low level of relaxation when the peak has a low value indicating a heart of the subject is beating at a heart rate which is not constant; and

determining that the detected physiological psychophysiological measure indicates a high level of relaxation, higher than the low level, when the peak has a high value, higher than the low value, indicating the heart rate is constant.

22. A television remote control for a television, the remote control being configured to modify a psychophysiological state of a subject and comprising:

a sensor configured to detect a psychophysiological measure of the subject;

a processor configured to process the detected psychophysiological measure so as to provide a signal indicative of the psychophysiological state of the subject; and

an output unit coupled to the processor and configured to output an output stimulus comprising a haptic stimulus that comprises a pattern that mimics a gradually decreasing respiration rate to the subject to gradually guide the subject to a desired psychophysiological state, the pattern based on the signal indicative of the psychophysiological state of the subject,

the processor further configured to output a television control signal, the television control signal comprising parameters corresponding to the psychophysiological measure, the parameters provided in the television control signal adjust audio and video settings of the television to modulate an audio and video output of the television in real time based on the parameters.

23. The remote control of claim 22, wherein the processor is configured to process the detected psychophysiological measure by detecting changes in periodicity of a heart beat signal of the subject including:

taking Fourier transforms of portions of the heart beat signal to form transformed signals,

taking a logarithm (log) of the transformed signals to form log signals,

taking inverse Fourier transforms of the log signals to form final signals,

identifying a peak of the final signal,

determining that the detected psychophysiological measure indicates a low level of relaxation when the peak has a low value indicating a heart of the subject is beating at a heart rate which is not constant, and

determining that the detected physiological psychophysiological measure indicates a high level of relaxation, higher than the low level, when the peak has a high value, higher than the low value, indicating the heart rate is constant.