BIOLOGICAL INFORMATION PROCESSING SYSTEM AND METHOD OF CONTROLLING BIOLOGICAL INFORMATION PROCESSING SYSTEM

• US 20160007868A1
• Filed: 07/02/2015
• Published: 01/14/2016
• Est. Priority Date: 07/09/2014
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: TAKAHASHI, Eizo
• Granted Patent: US 10,172,530 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/4058 for evaluating the central nervous system A61B5/4806, A61B5/4821 take precedence
• CPC Class Codes: A61B 5/4064 Evaluating the brain A61B5/031, A61B5/369, A61B5/14553 take precedence
• CPC Class Codes: A61B 5/4812 Detecting sleep stages or cycles
• CPC Class Codes: A61B 5/4815 Sleep quality
• CPC Class Codes: A61B 5/681 Wristwatch-type devices
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor

Abstract

A biological information processing system includes a pulse wave information acquisition unit which acquires pulse wave information of a user, and a processing unit which determines the sleep state of the user based on the pulse wave information. The processing unit obtains index information relating to an arousal state during sleep based on the pulse wave information.

Claims

1. A biological information processing system comprising:

a pulse wave information acquisition unit which acquires pulse wave information of a user; and

a processing unit which determines the sleep state of the user based on the pulse wave information,

wherein the processing unit obtains index information relating to a brain wave state during sleep based on the pulse wave information.

2. The biological information processing system according to claim 1,

wherein the brain wave state is an arousal state.

3. The biological information processing system according to claim 1,

wherein the processing unit obtains the index information based on a change in the pulse wave information in a first period during which it is determined that the user is in the sleep state.

4. The biological information processing system according to claim 3,

wherein the processing unit obtains the index information based on a comparison process of the amount of change in the pulse wave information in a given second period and a pulse wave change amount threshold value.

5. The biological information processing system according to claim 4,

wherein the processing unit obtains, as index information, the number of times at which the amount of change in the pulse wave information in the second period exceeds the pulse wave change amount threshold value for a given unit time.

6. The biological information processing system according to claim 4,

wherein the processing unit sets at least one value of the length of the second period and the pulse wave change amount threshold value based on personal information of the user.

7. The biological information processing system according to claim 4,

wherein the pulse wave information is information representing a pulse rate or a pulse period, and

the processing unit sets the length of the second period based on a time corresponding to a change cycle of the pulse wave information.

8. The biological information processing system according to claim 2,

wherein the processing unit performs a smoothing process of the pulse wave information in a first period during which it is determined that the user is in the sleep state,

obtains a change of the pulse wave information before the smoothing process with respect to the value of the pulse wave information after the smoothing process as the amount of change in the pulse wave information,

when the amount of change exceeds a pulse wave change amount threshold value, obtains a time representing the width of a peak of the pulse wave information corresponding to the amount of change, and

when the obtained time is within a given second period, determines that the arousal state is generated and obtains the index information based on the determination result.

9. The biological information processing system according to claim 2,

wherein the processing unit obtains somnolence index information as the index information relating to the arousal state.

10. The biological information processing system according to claim 2,

wherein the processing unit detects a state representing awakening without user consciousness as the arousal state based on the pulse wave information.

11. The biological information processing system according to claim 1,

wherein the pulse wave information is a pulse rate or a pulse period.

12. The biological information processing system according to claim 1, further comprising:

a presentation unit which presents the index information to the user.

13. The biological information processing system according to claim 11,

wherein the presentation unit presents that the user is in the arousal state.

14. A biological information processing system,

wherein pulse wave information of a user is acquired, and

information relating to a brain wave state during sleep is obtained based on the pulse wave information.

15. The biological information processing system according to claim 14,

wherein the brain wave state is an arousal state.

16. The biological information processing system according to claim 15,

wherein the sleep state of the user is determined based on the pulse wave information.

17. The biological information processing system according to claim 15,

wherein information relating to the arousal state is presented.

18. The biological information processing system according to claim 17,

wherein information relating to the arousal state is the number of times at which the amount of change in the pulse wave information in a given second period exceeds a pulse wave change amount threshold value for a given unit time.

19. The biological information processing system according to claim 15,

wherein sleepiness prediction indicating a possibility of the user feeling sleepy is presented based on information relating to the arousal state.

20. A method of controlling a biological information processing system, the method comprising:

performing a process for acquiring pulse wave information of a user; and

performing a process for obtaining information relating to a brain wave state during sleep based on the pulse wave information.

21. The method according to claim 20,

wherein the brain wave state is an arousal state.