Vestibular reflexes and balance The purpose of this experiment is to evaluate th
ID: 3509753 • Letter: V
Question
Vestibular reflexes and balance
The purpose of this experiment is to evaluate the role of vestibular reflexes and vestibular overstimulation on balance and gait.
A variety of balance tests are used to determine vestibular function. Because the vestibular system is so important for balance, one might be able to conclude that the vestibular system is dysfunctional if balance is poor. Typically, balance tests are used in cases of pathology or other nonnormal situations. Because most subjects have normal vestibular systems, you will induce your own disruptions to the vestibular system by spinning your subjects around rapidly. It is not advisable to spin subjects around if they are highly susceptible to dizziness or nausea. Use a spotter for all tests.
1. Describe your pre-test results, comparing eyes open and eyes close?
2. Describe your post-spinning results in comparison to the pre-spinning results. Was the eyes-open condition able to negate the effects of spinning?
3. Did you observe any consistent patterns in arm movement and falling direction after spinning? Can you explain? You cannot see how you performed, however, your group members should be able to tell you.
Vestibular Challenge Data Table
Pre-Spinning
Post-Spinning
Eyes Open
Eyes Closed
Eyes Open
Eyes Closed
Stork stand(s)
Balanced
Balanced
Balanced
Balanced
Heel-toe line walk (number of steps)
Balanced
Not balanced
Romberg test
(sway amount)
Sway
little much
1 2 3 4 5
Sway
little much
1 2 3 4 5
Sway
little much
1 2 3 4 5
Sway
little much
1 2 3 4 5
Vestibular Challenge Data Table
Pre-Spinning
Post-Spinning
Eyes Open
Eyes Closed
Eyes Open
Eyes Closed
Stork stand(s)
Balanced
Balanced
Balanced
Balanced
Heel-toe line walk (number of steps)
Balanced
Not balanced
Romberg test
(sway amount)
Sway
little much
1 2 3 4 5
Sway
little much
1 2 3 4 5
Sway
little much
1 2 3 4 5
Sway
little much
1 2 3 4 5
Explanation / Answer
Hi,
The experimental results are explained as below.
1. In the pre-test results two parameters were set; Eyes-open and Eyes-closed. In bot the cases the stroke stand was balanced and apparently no effect of eye open or close was observed. The walking experiment was only carried out with eyes open and results were normal balanced. In the sway amount Romberg test, again both eyes open and eyes closed did not vary and results were consistent. Thus in the Pre-spinning experiment, both the eye-open and eye-closed conditions did not affect the balance.
2. In the post-spinning experiments,the results of stork stand with eyes closed and eye open were balanced. This indicates that the spinning did not affect the stork stands. However, the walking exercise was not normal and balance was not achieved. The walking balance was indeed affected by spinning. In the Romberg test, the eye open and eye closed both had similar results and these were comparable with that of pre-spinning experiment. The eye -open condition has not negated the effects of spinning.
3. The arm movement was similar in pre and post spinning with both eyes closed and open. The falling direction also was similar.
Please ask your group members for more information for your hand movements.
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