What are the four basic tastes? What is the fifth taste that has been proposed Have you ever experienced olfactory fatigue? Describe what happened.after being stimulated for an amount of time. What is the blind spot of the eye? Does everyone with vision have a blind spot?
Pre-lab Questions
- What are the four basic tastes? What is the fifth taste that has been proposed
- Have you ever experienced olfactory fatigue? Describe what happened.after being stimulated for an amount of time.
- What is the blind spot of the eye? Does everyone with vision have a blind spot?
- In this investigation, you will test for the ability of an individual to perceive sound waves that have passed through bony structures associated with hearing. What are these structures?
Sometimes, a person may temporarily experience impairment of both hearing and balance due to an ear infection. Based on your reading of the Background for this investigation, how can this happen?
Data Tables
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Activity 1: Smell
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Fragrance |
Right Nostril Fatigue (seconds) |
Left Nostril Fatigue (seconds) |
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Clove Oil |
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Peppermint Oil |
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Activity 2: Taste and Smell
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Food |
Identified with nostrils shut? (Y/N) |
Identified with nostrils open? (Y/N) |
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Apple |
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Onion |
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Potato |
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Carrot |
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Activity 3: Pupillary Light Reflexes
Direct Pupillary Light Reflex
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Left Eye |
Right Eye |
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Response to illumination of the eye (constriction or dilation) |
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Consensual Pupillary Light Reflex
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Right Eye |
Left Eye |
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Response to illumination of opposite eye (constriction or dilation) |
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Activity 4: Blind Spot
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Left Eye |
Right Eye |
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Distance at which the dot disappeared (cm) |
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Activity 5: Near Point |
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Left Eye |
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Right Eye |
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Near point (cm) |
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Activity 6: Snellen Eye Chart
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Left Eye |
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Right Eye |
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Visual Acuity |
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Activity 7: Astigmatism |
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Left Eye |
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Right Eye |
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Astigmatism present (Y/N)? |
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Activity 8: Bone Conduction
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Sound heard with fork on head? (Y/N) |
Sound heard when fork moved away? (Y/N) |
Sound heard when fork returned? (Y/N) |
Sound heard with fork on temple? (Y/N) |
Sound same in both ears? (Y/N) |
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Activity 9: Rinne Test
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Side |
Rinne test results |
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Left ear |
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Right ear |
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Activity 10: Equilibrium Test
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Test Position |
Time (sec) |
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Feet together, eyes open |
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Feet together, eyes closed |
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Heel to toe, eyes open |
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Heel to toe, eyes closed |
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One leg, eyes open |
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One leg, eyes closed |
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Discussion
- Did switching to the left nostril to sniff the clove oil and peppermint oil diminish or enhance the odors? Is the fatigue time for the left nostril significantly different than the right nostril?
What do the results of the taste and smell test tell you about the connection between these two special senses? Have you noticed a relationship between these two special senses in your own experiences?
List at least two circumstances in which it would be important to be aware of your blind spots.
Why is the near point closer for a myopic person than a hyperopic person?
In the bone conduction activity, was the sound louder on the side of the head where the tuning fork was touched? Explain your answer.
How would the hearing of a person with conductive hearing loss be affected if he or she were under water? Why?
Did you notice a difference in performance on the equilibrium tests depending on whether the test subject had their eyes open or closed? Explain your answer.
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