The ears also control equilibrium (sense of balance). If the equilibrium becomes weak, you experience dizziness or wobble.
Equilibrium is controlled by the semicircular canals of the ear. The semicircular canals are filled with water. When the body inclines, the flow of the water in the semicircular canals changes and a sensor in the semicircular canals catches the inclination. But the function of the sensor becomes weak due to aging and the sensor becomes unable to catch the inclination of the body accurately. If you don’t notice the weakness of the sensor, you fall down, causing bedridden in the worst case.
Check your equilibrium using a pen and a sheet of paper
Prepare a pen and a sheet of paper.
1. Fix the paper on the table with tapes or something heavy for the paper not to move.
2. Pick up the pen with one hand and put the other hand on the thigh. (Fig. 1)
3. Put down the tip of the pen on the paper not to make the hand touch the paper. (Fig. 2)
4. Write “ABCDE” on the left side of the paper vertically. The size of the letter should be about 2 inches.
5. Write “ABCDE” on the right side of the paper vertically, closing your eyes. (Put down the tip of the pen where you start to write and then close your eyes.)
If the inclination of the letters is within 5 degrees, it is considered as normal. (Fig. 3)
If the inclination of the letters is between 6 and 9 degrees, there is a possibility that the function of the semicircular canals is weak.
If the inclination of the letters is more than 10 degrees, it is diagnosed with having abnormal condition.
If the letters are inclined toward the left side, the left semicircular canals are weak. (Fig. 4)
If the letters are inclined toward the right side, the right semicircular canals are weak.
You can check the inclination, enlarging Fig. 5 and putting what you wrote on it, or you can use a sheet of paper folded 3 times like Fig. 6 and place the tip of the paper at the center of “A”. a half of the width of the paper is about 5 degrees.
Exercise to improve equilibrium
1. Raise your thumb in front of your face and stare at the tip of the thumb. (Fig. 7)
2. Swing your head from side to side 10 times at a speed of 1 time per second, staring at the tip of the thumb.
3. Put your thumb sideways and swing your head up and down staring at the tip of the thumb. (Fig. 8)
4. Place your thumb at the closer to your face and do the same things. (Fig. 9)
If you continue this exercise 1-2 times a day, you can improve the weakness of your equilibrium.
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