JPH04250141A - Subject abnormality detecting device - Google Patents

Abstract

PURPOSE:To easily detect the abnormality of a subject by examining the reaction of the subject to a stimulation by means of tests for alcohol poisoning, narcotism, and others. CONSTITUTION:A stimulation is given to a subject 1 by a subject stimulating device 6, and a subject input device operated by the subject 1 in conformation with the stimulation according to a predetermined instruction is provided. When the subject 1 operates the subject input device, an arithmetic device 5 receives the output signal from the input device 8 and indicates a target to the subject 1 through a target indicating device 7. A television camera 3 photographs the eyeball movement of the subject 1, and outputs its video signal to the arithmetic device 5 through an eyeball movement detecting device 4 as the eyeball movement measurement data. The arithmetic device 5 outputs a stimulation generation signal to the subject stimulating device 6 and also a target indication signal to the target indicating device 7, and calculates the abnormality of the subject by the eyeball movement measurement data and the output signal from the subject input device 8, and this abnormality is displayed on an abnormality display device 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test subject abnormality detection device for detecting an abnormal state of a test subject's body, such as testing for alcoholism or drug addiction, and further testing before boarding a pilot.

0002

[Prior Art] Conventionally, tests for acute alcohol poisoning, so-called intoxication, have been carried out by testing blood alcohol concentration.
For example, during drunk driving enforcement, the degree of intoxication is tested by checking the alcohol concentration of the subject's exhaled gas. In addition, in the case of chronic alcohol addiction (alcoholism), tests are conducted on behavioral patterns, metabolic disorders, and liver function, and in the case of drug addiction, complicated tests such as tests on central nervous system function are performed. On the other hand, there is currently no pre-boarding inspection for pilots.

0003

[Problems to be Solved by the Invention] When testing the blood concentration of alcohol for acute alcohol poisoning, so-called intoxication, there is a problem that it takes time and effort, and testing using exhaled gas that correlates to the blood concentration is difficult. Although these testing methods are simple, there is a problem in that they cannot measure the physical effects of poisoning. In other words, there are individual differences between the blood alcohol concentration, which indicates a state of intoxication, and the test subject's motor and reflex functions, so it was not possible to truly measure the effects of intoxication just by measuring the blood alcohol concentration. . For example, when testing a driver's intoxication status using exhaled gas, the blood concentration of alcohol may be low depending on the person, but even if there is no problem in general, the driving function may be impaired, and this remains a problem as a test. Furthermore, in the case of chronic alcohol addiction (alcoholism) or drug addiction, it was not possible to easily test for such cases.

[0004] On the other hand, there has been a problem in that it is not possible to prevent pilots in abnormal conditions from boarding in advance because it is not easy to inspect pilots before boarding.

[0005] The present invention has been made in view of the above points, and it is possible to truly assess the effects of addiction on a test subject, such as an alcoholic, by examining their movements and reactions to stimuli. In this way, it is an object of the present invention to provide an abnormality detection device for a subject that can easily detect an abnormality of a subject and furthermore detect the degree of abnormality such as autonomic nervous imbalance due to other causes. shall be.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the test subject abnormality detection device of the present invention includes a test subject stimulation device that stimulates the test subject to arouse a reaction, and a test subject stimulation device that stimulates the test subject to evoke a reaction. A subject input device includes an operating member operated by a subject according to predetermined instructions and generates an output signal in response to the operation of the operating member, and presents a visual target to the subject. an optotype presentation device, an eyeball movement detection device for detecting the eyeball movement of the subject, and outputting a stimulation generation signal to the subject stimulation device and outputting an optotype presentation signal to the optotype presentation device. On the other hand, there is a calculation device that calculates the degree of abnormality of the subject based on the eye movement measurement data from the eye movement detection device and the output signal from the patient input device, and an abnormality degree display that displays the degree of abnormality based on the signal from the calculation device. This is composed of devices.

[0007] It is efficient that the eye movement detection device is equipped with a television camera for photographing the eye movement of the subject, and detects the eye movement by receiving the video signal from the television camera and processing the image. be.

[0008]

[Operation] When the abnormality detection device configured as described above is started, the arithmetic device sends a stimulus generation signal to the subject stimulator, and the subject stimulator stimulates the subject. The operating member of the subject input device is operated according to a predetermined instruction corresponding to the stimulus. By this operation, the subject input device outputs an output signal corresponding to the operation to the arithmetic device. The arithmetic device receives the output signal and outputs an optotype presentation signal to the optotype presentation device, which allows the device to be calibrated in accordance with the optotype that the subject fixates based on the signal, and also allows the test subject to perform the test. When the subject looks at the optotype, the subject's eye movement is detected by the eye movement detection device, the detected eye movement data is output to the computing device, and the computing device combines the eye movement measurement data and the subject. The abnormality degree of the subject is calculated based on the output signal from the human input device, and the abnormality degree is displayed on the abnormality degree display device.

When a television camera for photographing the eye movements of the subject is used in the eye movement detecting device and the video signal from the television camera is image-processed, EOG (electr
Unlike o-oculography, it is possible to obtain accurate eye movement measurement data and output it to an arithmetic device without being bothered by noise such as myoelectric potential, thereby accurately detecting the degree of abnormality of the subject.

0010

[Embodiment] An embodiment of the present invention will be explained based on the attached drawings. Fig. 1 shows a block diagram when an abnormality in a subject is detected by the abnormality detection device for a subject according to the present invention. There is.

Reference numeral 1 indicates a subject operating an operation member (not shown) of the subject input device 8. As shown in FIG. The subject 1 operates the operation member of the subject input device 8 in response to the stimulus from the subject stimulation device 6, and the subject 1 uses the optotype of the optotype presentation device 7 that is displayed at that time. The state of the movement of the eyeball 2 when the eyeball 1 is viewing is photographed by a television camera 3, and the video signal is input to the arithmetic unit 5 via the eyeball movement detection device 4.

The operating member of the subject input device 8 can be operated in response to stimulation by, for example, tilting the operating member left and right like a joystick, and can be operated with the legs like a foot switch. It may be something that is operated. In addition, sound, light, or the like can be used for stimulation by the subject stimulation device 6, and if there is no problem with the location of use, sound stimulation from a speaker is advantageous in terms of seeing the visual target. Further, the optotype presented by the optotype presenting device 7 is L
It is also possible to use a horizontal optotype or a cross-shaped optotype in which a plurality of visible light sources such as ED are listed.

[0013] The television camera 3 receives reflected light from the surface of the eyeball 2 illuminated using natural light, visible light, or invisible infrared rays and outputs a video signal, and the video signal is sent to an eye movement detection device. The image outputted to 4 and stored in the detection device 4 is scanned and processed to detect the movement of the coordinates of the center of gravity of the pupil and measure the eye movement.

The arithmetic device 5 outputs a stimulus generation signal to the subject stimulation device 8 to apply stimulation to the subject via the subject stimulation device 8 and to generate stimulation to the subject via the subject input device 8. The examiner's reaction is input and recorded, and an optotype presentation signal is output to the optotype presentation device 7, the optotype is presented via the optotype presentation device 7, and the eye movement detection device 5 Eye movement measurement data obtained by eye movement measurement and subject input device 8
The abnormality degree of the test subject is calculated based on the test subject's reaction data from the test subject and is output to the abnormality degree display device 9. The abnormality degree display device 9 receives the abnormality degree signal from the arithmetic unit 5, and displays the degree of abnormality of the subject through means such as a monitor display, lighting switching of a meter, or a lamp.

[0015] In the above, when the signal output from the subject input device 8 is input to the arithmetic unit 5 by the subject's correct operation, during calibration, that is, when the subject 1 fixes the calibration optotype. When calibrating the position of the optotype when viewing and the position of the center of gravity of the pupil in the eye movement detection device 4, an optotype presentation signal for lighting up the calibration optotype is sent from the arithmetic device 5 to the optotype presentation device. On the other hand, at the time of eye movement measurement for detecting an abnormality, an optotype presentation signal for lighting up the test optotype is output from the calculation device 5 to the optotype presentation device 7. Furthermore, when an erroneous operation is input to the subject input device 8 during either calibration or eye movement measurement for abnormality detection, the erroneous operation is recorded in the calculation device 5 using an output signal from the subject input device 8. At the same time, the arithmetic unit 5 outputs a restimulation generation signal to the subject stimulation device 6 to give restimulation to the subject 1.

Next, a case will be described in which the degree of abnormality of a subject is detected using the apparatus of the present invention. A speaker is used for the subject stimulation device 6, and the stimulus for the subject is “
Two types of sounds are used: a beep sound and a beep sound, and a joystick that can be tilted left and right is used as the operation member (not shown) of the subject input device 8. Instruct the students to tilt the joystick to the right when they hear a "beep" sound, and to tilt the joystick to the left when they hear a "beep" sound. The examiner calibrates the eye movement detection device 4 and the calculation device 5 through the correct operation, and the test target is turned on in the target display device 7 by the same correct operation with a beep sound, and the test subject is This method measures the movement of the pupil center of gravity coordinates, that is, the eye movement.

FIGS. 2 and 3 show flowcharts in which:
The procedure for detecting the degree of abnormality of the subject 1 using the apparatus of the present invention is shown. First, after instructing the subject 1 to operate the joystick (not shown) of the subject input device 8 in response to the sound from the speaker as described above,
When the device is driven, a “beep” sound is emitted from the patient stimulation device 6 to the patient 1 in response to the stimulus generation signal from the arithmetic device 5.
is emitted toward the subject 1 and gives a stimulus to the subject 1 (Step 1
0). Wait for the test subject's reaction, that is, the operation of tilting the joystick to the right (step 11), and if the test subject has tilted the joystick to the right correctly, the correct response (
If the camera is tilted to the left, an output signal indicating an erroneous operation is output (step 12). In the case of a correct reaction, the arithmetic device 5 which has received the output signal outputs the optotype presentation signal of the calibration optotype to the optotype presentation device 7, and outputs the optotype presentation signal of the calibration optotype (in the case of a horizontal optotype, the center (step 14), and in the case of an erroneous operation signal, the erroneous operation data is stored in the arithmetic unit 5 (step 13), and a restimulation generation signal is output to the subject stimulation device 6. A "beep" sound is generated from the speaker of the device 6 to stimulate the subject 1 again. When a complex abnormality test is not being performed, this calibration optotype may be a simple horizontal row of multiple optotypes, and the calibration optotypes at the center and both left and right ends are illuminated and the subject is asked to fixate the target. The eye movement is measured, that is, the position of the optotype and the coordinate position of the pupil center of gravity in the eye movement detection device 4 are calibrated (step 15), and the calibration is completed. If the calibration is not completed, the subject is stimulated again to perform calibration (step 16).

After completing the calibration of the device in this way, the computing device 5 outputs a stimulus generation signal for measuring eye movements for detecting an abnormality of the subject to the subject stimulation device 6, and generates the stimulus. A "beep" sound for eye movement measurement is emitted from the speaker of the device 6 to stimulate the subject 1 (step 17). Wait for the subject's reaction, that is, the operation to tilt the joystick (step 1).
8) If the subject input device 8 is tilted correctly to the left, an output signal indicating a correct reaction (operation) will be output, while if it is tilted to the right, an output signal indicating an incorrect operation will be output (step 1).
9). In the case of a correct reaction, the arithmetic unit 5 which receives the output signal outputs a visual target presentation signal of the test visual target to the visual target presentation device 7, and displays the test visual target as a plurality of visual targets in a horizontal direction, for example. The LEDs are turned on by sequentially moving the lighting section from the left to the right (step 21),
In the case of an erroneous operation signal, the erroneous operation data is stored in the arithmetic device 5 (step 20), and a restimulation generation signal is outputted to the subject stimulation device 6, and the speaker of the device 6 outputs “”.
A beep sound is generated to stimulate the subject 1 again.As described above, the illuminated optotype is sequentially moved and the subject follows it, and this is repeated to measure the eye movement (
Step 22). If the test is not completed, the test subject is stimulated again by emitting sound from the speaker to end the eye movement measurement test (step 23). After the above test is completed, the calculation device 5 calculates the degree of abnormality from the eye movement measurement data from the eye movement detection device 4 and the erroneous operation data stored in the calculation device 5 (step 2).
4) The abnormality degree signal is output to the abnormality degree display device 9, and the abnormality degree of the subject is displayed on the display device 9, and these series of operations are performed continuously.

[0019] This device applies a stimulus to the subject as described above and calculates the degree of abnormality of the subject by examining the subject's reaction to the stimulus. It is possible to determine whether the examinee's body is correct or not by combining the detection of cases in which the degree of abnormality of the examinee is large using the erroneous operation data and the detection of eye movement disorders in the examinee using the eye movement measurement data. Since the degree of abnormality of activity is displayed, it is possible to closely examine the state of impaired physical activity without overlooking even abnormal states of the test subject that do not cause erroneous operation. By giving instructions to the subject in advance and driving this device, the degree of abnormality of the subject can be quickly determined.

[0020] Therefore, when the device of the present invention is used to test for acute alcohol poisoning, so-called intoxication, it is possible to detect impaired physical activity of the test subject, regardless of the blood alcohol concentration. To accurately and easily perform a functional test regardless of the person's tolerance to alcohol. Furthermore, tests for drug addiction and the degree of autonomic nervous system imbalance can be easily performed.

[0021]Although it is of course possible to use the present abnormality detection device as a stationary device, for example, it may be placed inside goggles worn on the subject's head and applied to the subject's ear as a subject stimulation device. A contact receiver is attached, and the LE of the optotype presentation device is attached.
A visual target consisting of D and a small television camera are placed in front of the eyes, while a display section of the abnormality level display device is installed outside a separate control box containing an eye movement detection device and a calculation device to switch the subject input device. If an operating member such as a button switch is provided at the end of the cable from the control box, it can be made portable and the value of use can be increased. In addition, when using optical stimulation as a subject stimulation device,
It is also possible to use the optotype presentation device as a subject stimulation device.

[0022]

According to the subject abnormality detection device of the present invention as set forth in claim 1, when detecting an abnormality due to a physical activity disorder of the subject, the subject is given instructions regarding stimulation in advance. The degree of abnormality of the subject can be quickly detected by the subject's operations and eye movement reactions in response to stimuli. Therefore, even in cases such as acute alcohol poisoning, where there are individual differences between the alcohol blood concentration and the subject's motor and reflex functions, and it is not possible to truly measure the effects of intoxication from blood concentration alone, it is possible to accurately measure the effects of intoxication. It is possible to detect abnormalities due to impaired physical activity of the subject, and it is possible to reasonably and correctly test for drunken driving of a motor vehicle. Further, in general, abnormalities due to disorders of physical activity functions and abnormalities due to disorders of the central nervous system can be easily detected, and the present invention can be effective in diagnosing such abnormalities in subjects.

According to the invention described in claim 2, when detecting the eye movement of the subject, the movement can be detected immediately and accurately without requiring any complicated effort, and the degree of abnormality of the subject can be detected. can be detected quickly and accurately.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an abnormality detection device for a subject, which is an embodiment of the present invention;

FIG. 2 is a flowchart showing the first half of the procedure when detecting an abnormality in a subject using the device of the present invention;

FIG. 3 is a flowchart showing the latter half of the procedure when detecting an abnormality in a subject using the apparatus of the present invention.

[Explanation of symbols]

1. Subject 2 Eyeball 3 TV camera 4 Eye movement detection device 5 Arithmetic device 6 Subject stimulation device 7 Visual target presentation device 8 Subject input device 9 Abnormality degree display device

Claims (2)

[Claims] Claim 1: A test subject stimulator that stimulates a test subject to arouse a reaction; and an operating member that the stimulated test subject operates according to predetermined instructions. a subject input device configured to generate an output signal, an optotype presentation device for presenting an optotype to a subject, an eye movement detection device for detecting an eye movement of the subject; A stimulus generation signal is output to the subject stimulation device, and an optotype presentation signal is output to the optotype presentation device, while the eye movement measurement data from the eye movement detection device and the output signal from the subject input device are a calculation device that calculates the degree of abnormality of the examiner;
An abnormality detection device for a subject, comprising an abnormality degree display device that displays the degree of abnormality based on a signal from a calculation device. 2. The eye movement detection device according to claim 1, wherein the eye movement detection device includes a television camera for photographing the eye movement of the subject, and detects the eye movement by receiving a video signal from the television camera and processing the image. Abnormality detection device for the subject described.