JPH10276988A - Device of and method for displaying nystagmograph - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to easily record and monitor waveforms without obstructing a nystagmus test, by registering the order of test items and a waveform displaying color into an analyzing device at a nystagmus record test and displaying a bright color in a bright place and a dark color in a dark place. SOLUTION: In a display device of an electric nystagmograph 7 made to perform various nystagmus tests using the electric nystagmograph 7 in a dark place to display a nystagmogram on a display part 22, procedures for each test item and waveform color, background color, and letter color displayed on the display part 22 are selected to be dark hue and brightness for test items for a test in a dark place and bright hue and brightness in a bright place, and they are stored in a memory means 23 of an analyzing device 21 to display the nystagmogram in a color suitable for a test item in nystagmographic record inspection. Accordingly, since a letter color, a waveform color, and a back ground color suitable for each test item are automatically displayed on the display part 22 of the analyzing device 21, displaying device and method for the electric nystagmograph 7 without fear of obstacle in a test at a dark place are obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device of an nystagmoscope and a display method thereof, and more particularly to a display device of an oscilloscope suitable for displaying a recorded waveform in a dark place and a display method thereof.

[0002]

2. Description of the Related Art Conventionally, as one method of vestibular function test,
Dizziness, electric electronystagmography to diagnosis such as balance disorders (E lectr
o n ystagmo g raph: are used hereinafter referred to as ENG) is wide.

[0003] The operating principle of ENG is that when the eyeball vibrates between the cornea, which is the front end of the eyeball, and the retina, which is the rear end, a positive potential difference on the cornea side and a negative potential difference on the retina side, that is, a corneal retina potential difference is generated. The potential difference causes a potential fluctuation proportional to the vibration of the eyeball.

[0004] The ENG is a device for measuring and recording a change in corneal retinal potential accompanying such eye movement, and diagnoses various disorders based on an nystagmus recording such potential fluctuation. .

FIG. 5 is a system diagram of a conventional ENG induction method. A dish-shaped electrode for detecting nystagmus has a diameter of 5 to 10 mm, and the dish-shaped electrode is as shown in FIG. At the position of the face 1, the skin resistance is sufficiently lowered via the paste via a paste.

The electrodes on the face 1 in FIG. 5 are horizontal induction electrodes, and-and-electrodes are monocular horizontal induction electrodes.
The-and-electrodes represent the relevant electrodes such as vertical induction electrodes, and the K electrode in the middle of the forehead represents the unrelated electrode.

The potential changes induced from these electrodes are:
In proportion to the deviation angle of the eyeball, a change of one degree in the visual sense of the eyeball causes a potential change of about 10 μV. This potential change is usually made to collect the original waveform and the velocity waveform as shown in the nystagmus diagram of FIG. The original waveform 9 performs a rhythmic nystagmus movement having two phases of a rapid phase 10 and a slow phase 11, but an abnormal nystagmus such as generating microtremor vibration becomes an imbalance in the eye movement.

[0008] The ENG 7 comprises an amplifier 2 and recorders 4A and 4B as shown in FIG. Amplifier 2 is 10 μV
It is amplified so that a slight change in potential is recorded in the recorders 4A and 4B. The induced output potential change amplified by the amplifier 2 is supplied to a high-frequency rejection filter (hereinafter referred to as HEF) 3 and a differentiating circuit 5.

In the HEF 3, the frequency of 15 Hz to 20 Hz or more is removed in order to prevent AC hum or electromyogram from being mixed, and the original waveform 9 as shown in FIG. 6 is recorded in, for example, a hot pen type recorder 4A.

The nystagmus original waveform supplied from the amplifier 2 to the differentiating circuit 5 is differentiated in order to obtain the velocity waveform 12 shown in FIG. 6 to the recorder 4B.

When the velocity waveform 12 is recorded, the rapid phase velocity 13 and the slow phase velocity 14 have a great difference in their amplitudes. Therefore, when the slow phase velocity 14 is observed in detail using the HEF and the clipper 6, the rapid phase velocity 13 is rapidly recorded. The phase velocity 13 is electrically removed using the clipper 6. The clipper used for the HEF 3 is also for clipping the rapid phase 10 when observing the slow phase 11 in the original waveform 9.

As a test method using ENG7 as described above, a test subject is given a stimulus according to the purpose of the test, and a diagnosis is made based on the nystagmus obtained therefrom. The stimulation can be given by applying electrical stimulation near the ear, injecting a certain amount of cold or hot water into the ear, injecting / extracting air, pressurizing / depressurizing, or drawing an image drawn on the screen. A method of causing the subject to follow the eye or rotating the subject on a swivel chair is used.

[0013]

When performing various tests on a subject using the conventional ENG7 configured as described above, particularly in spontaneous nystagmus, non-gaze tests in right, left, up and down, etc., a dark room or The measurement is performed during eye opening, and the recorder 4
In order to confirm the original waveform and velocity waveform recorded in A and 4B, the waveform should not be observed using a dim flashlight (wrapping the flashlight with gauze or the like) so as not to affect the subject. Did not become.

Recently, waveform filing has been performed in which parameters such as amplitude, speed, and duration of nystagmus are analyzed from a recorder by an analyzer in the analyzer. In this case, the CRT of the analyzer is used. And the like, it becomes necessary to partition the subject and the analyzer because the entire inspection room becomes brighter and the inspection in the dark room cannot be performed.

[0015] Partitioning the inspection room in this way not only increases the equipment cost, but also makes it difficult for only one inspector to perform ENG operation.

An object of the present invention is to provide an ENG display device and a display method therefor which have solved the above-mentioned problems. An object of the present invention is to provide an inspection performed in a dark room. Then, the brightness and hue are adjusted in advance so that the brightness of the CRT or the like does not affect the subject,
It is an object of the present invention to provide an ENG display device and a display method thereof, in which inspections can be sequentially performed by setting measurement conditions in advance in an analysis device.

[0017]

According to the present invention, as shown in FIG. 1, various nystagmus tests are performed in a dark place using ENG7 as shown in FIG. In the ENG7 display device configured to display, the procedure for each inspection item and the waveform color, background color, and text color of the nystagmus displayed on the display unit 22 are inspected for the inspection item in a dark place. In the inspection item in a light place, a dark hue and a luminance are selected, and a bright hue and a luminance are selected.
And the nystagmus is displayed in a display color suitable for the examination item.

In the ENG display method of the present invention, various nystagmus tests are performed in a dark place using ENG7, and the nystagmus is analyzed by the analyzer 2.
In the display method of the nystagmus meter 7 to be displayed on the display unit 22, the procedure for each test item and the waveform color, background color, and text color of the nystagmus displayed on the display unit 21 are described. A dark hue and a luminance that do not hinder the inspection are selected and displayed on the display unit 22 of the analyzer 21.

According to the ENG display device and its display method of the present invention, it is possible to darken the examination room and perform spontaneous nystagmus, non-gaze examination, etc. without affecting the subject. can get.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an ENG display device according to the present invention and its display method will be described in detail with reference to FIGS.
FIG. 1 is a configuration diagram of an ENG of this example. In an examination room 15, a balance tracking test device 16 such as a target tracking test device and a rotating nystagmus test device used by a subject 25 at the time of a nystagmus test, and a test subject Person 2
ENG7 including the electrical connection box 17 and the recorders 4A and 4B and the analog-to-digital converter (A / D) for guiding the detected signal to the ENG7 using the related electrode and the unrelated electrode adhered to the face of No. 5 Analyzer 21 including waveform and analysis device
And

The inspector 24 operates the hand switch 18 or the foot switch 19 connected to the ENG 7 so that the procedure for each inspection item incorporated in the analyzer 21 can be sequentially advanced. I have.

From the electrical connection box 17 described above, for example, the original waveform 22a and the velocity waveform 22b of the horizontal guidance and the original waveform 22c and the velocity waveform 22d of the vertical guidance are taken out.
Recording is performed on recording paper via the recording devices 4A and 4B of the NG7.

Further, the nystagmus waveform digitally converted via the A / D 20 is sequentially stored in the RAM 23 of the analyzer 21 or a memory 23 such as an external magneto-optical disk and displayed on the display unit 22 such as a CRT. You.

There are various types of the equilibrium function testing device 16, and for example, a gaze test of the test item 3 shown in FIG. In this test, the head of the subject 25 is fixed, and the function of tracking and observing a moving object with eyes is checked. The index 16a having a diameter of 1 to 2 cm is horizontally, vertically, sine wave, triangle wave, rectangular wave. In this case, there is an optical system that can be used even in a dark place. However, in general, the inspection is performed in a bright state in the inspection room 15.

FIG. 3 shows an example of the nystagmus of the pursuit eye movement test in such an examination. In this case, an abnormality is determined based on whether or not the sine curve of the index 16a appears with reproducibility.

In the spontaneous nystagmus of the next test item 4 in FIG. 2, the test room 15 is darkened, and the nystagmus is collected by closing the eyes and opening the eyes in a dark place. In the case of spontaneous nystagmus, the eyeballs are slightly moving even when they are not looking at the object, so the change in potential fluctuation at this time is detected. This is an examination to collect nystagmus when moving left and right.

A rotating nystagmus inspection device is an example of a balance function inspection device as an inspection method performed in such a dark place. When this device is closed in a dark place and the head is rotated, nystagmus is triggered in the direction of rotation, and when the rotation is stopped, nystagmus occurs in the opposite direction. For this examination, the chair 25 can be accelerated, decelerated, rotated at a constant speed, and stopped suddenly, and the subject 25 is seated on the chair to obtain a nystagmus.

As described above, the inspection in the bright place and the inspection in the dark place are sequentially performed within a predetermined time.

The examiner 24 usually takes care of the subject 25
Since it is necessary to monitor the operation of the NG 7 and the operation of the analyzer 21 and whether or not the nystagmus is displayed on the display unit 22, there is no room to operate the analyzer 21. The procedure is registered in the memory 23 in advance.

Further, spontaneous nystagmus tests (closed eyes, open eyes in dark places),
Character colors such as hue and luminance, waveform colors, etc. The background color can be set freely, and the standby character color, waveform color, and background color during standby are selected relatively bright and stored in the memory. Select a dark color for the color and background.

For example, in a dark place measurement, the background color is set to black and the character color and waveform color are selected to be brown, etc. as the measurement colors. Of course,
The brightness and the like are set to be sufficiently reduced.

Next, for the inspection items to be inspected in a bright place such as a gaze inspection, a sliding motion, etc., the standby color at the standby and the measurement color at the time of the measurement are a bright character color, a waveform color, and a background color such as hue and luminance. The color is selected and registered in the memory 23.

For example, in a measurement in a light place, the background color is selected to be white, the character color to be red, the waveform color to be yellow, and the like.

The above-mentioned color selection is performed by software in the analysis device in the analysis device 21 via the mouse 409 via the mouse 409.
An arbitrary color can be set from six colors.

[0035] FIG. 4 shows a flow chart for setting the display color to be displayed on the display unit 22 such as a CRT for each inspection item of the dark and bright place, for each inspection item in a first step ST ₁ Set the procedure for each item and set 1, CAL as shown in FIG.
(Calibration), 2, CAL (calibration), 3, gaze test (left and right, up and down), 4, spontaneous nystagmus (closed eyes, open eyes in dark place), etc. are registered in the memory 23.

In the next second step ST ₂ , an inspection time for each inspection item is set (registered in the memory 23).

In the next third step ST ₃ , for example, a character color 27, a waveform color 28, and a background color 30 of the nystagmus of FIG.
The selected color at this time is before the inspection, so that there is no effect even if the CRT is bright, so a bright color is selected.

The character color 27 at the time of measurement for each subsequent fourth step ST ₄ In the inspection item, waveform color 28 sets the background color 29, is registered in the memory. In this case, the inspection color in a bright place is selected as a bright color, and the inspection color in a dark place is selected as a dark color which does not disturb the measurement. In FIG. 2, “000” is R,
G, B is 000 black, "FFF" is R, G, B is FFF
Is displayed in white.

Further, if necessary, a mark signal (beep ON / OFF) to be input for each inspection item is set and registered in the memory 23, and the setting of the measurement conditions is completed.

According to the inspection items registered in the memory 23 of the analyzer 21, the inspector 2
No. 4 operates the hand switch 18 or the foot switch 19 (fifth step ST ₅ ), and the inspection items can be sequentially advanced. In the above-described configuration, the inspector 24 sets the character color, waveform color, and background color at the time of stand-by and at the time of measurement to a bright color in a light place inspection and a dark color in a dark place inspection in a dark place. You may make it set before shipping.

[0041] Therefore, automatically bright character color on the display unit 22 in a bright test items as shown in the sixth step ST ₆ of the analysis device 21, waveform color, appear background color, automatically dark dark test items Since the character color, the waveform color, and the background color appear, an ENG display device and a display method thereof that do not hinder inspection in a dark place can be obtained.

[0042]

According to the ENG display device and the display method of the present invention, the order of the test items and the waveform display colors are registered in the computer in the analyzer at the time of the nystagmus recording test, so that bright colors can be obtained in a light place. In a dark place, the waveform is displayed in a dark color, and the recording and monitoring of the waveform can be easily performed without hindering the nystagmus test. Also, regarding the color of the screen display, the character color, background color, and waveform color for each inspection item are divided into the recording inspection standby and during the inspection so that the arbitrary color can be set by the manufacturer or the user. At the time of the actual recording inspection, the inspection items can be advanced by pressing the remote switch, so that the recorder illuminated with a flashlight becomes unnecessary as in the past, and the waveform monitor using an analyzer separates the room This eliminates the necessity, and has the effect that a single examiner can perform a nystagmus recording test.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a display device of an nystagmus of the present invention.

FIG. 2 is a display pattern at the time of setting a color for each inspection item used in the display device and the display method of the nystagmus meter of the present invention.

FIG. 3 is a nystagmus at the time of a tracking eye movement test used in the nystagmus of the present invention.

FIG. 4 is a flowchart for setting colors according to the present invention.

FIG. 5 is a system diagram of a conventional nystagmus.

FIG. 6 is a nystagmus diagram showing an example of the related art.

[Explanation of symbols]

 2 amplifier, 4A, 4B recorder 7 nystagmus (ENG) 15 examination room 21 analyzer 23 memory 24 examiner 25 subject

Claims (2)

[Claims] 1. A nystagmographic display device configured to perform various nystagmus tests using a nystagmometer and display a nystagmus on a display unit of an analyzer. Waveform color of the nystagmus displayed on the display unit,
The background color and the character color are selected as dark hues and luminances which do not hinder the inspection in inspection items in a dark place, and are selected as bright hues and luminances in the inspection items in a light place, and are stored in the storage means of the analyzer. A display device for a nystagmograph, wherein the display device stores the nystagmus with a display color that matches a test item. 2. A method for displaying a nystagmus in which various nystagmus tests are performed in a dark place using a nystagmometer and a nystagmus is displayed on a display unit of the analyzer. Procedure and waveform color of the nystagmus displayed on the display unit,
A method for displaying a nystagmus, wherein a background color and a character color are selected to be dark hues and luminances which do not hinder an inspection in an inspection item in a dark place, and are displayed on a display unit of the analyzer. .