S&P Final Exam Questions
Professor Frank Schieber, Heimstra Human Factors Laboratories, University
of South Dakota
1. Describe the information (i.e., "cues") available to the visual system that supports the construction of 3D representations of the environment from the somewhat ambiguous 2D retinal image(s).
2. What is stereopsis? Describe the physiological basis of this important visual function.
3. Describe how the primate visual system processes light information on the basis of wavelength.
4. Contrast additive versus subtractive color mixing. Be sure to give some examples of each process.
5. Describe how one can measure the color of an object and communicate accurately about it (i.e., basic colorimetry).
6. Define and discuss the properties of the dB (SPL) unit of sound measurement.
7. State and discuss the meaning of Steven’s power law of loudness perception.
8. What is meant by the "impedance" problem and how does the ear overcome it?
9. Trace the flow of auditory information from the outer ear to the auditory cortex. Be detailed and thorough in your response.
10. Describe the auditory transduction process.
11. Describe the mechanisms used by the cochlea to encode pitch.
12. Discuss the primary mechanisms of human sound localization.
13. What is the special problem that exists for discriminating "straight ahead" from "straight behind"? How do human observers appear to overcome this problem?
14. Describe the four classes of mechanoreceptors in the skin and discuss how they form the basis of a (2) temporal x (2) spatial channel model of touch perception.
Enjoy.
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