SIU Neurology Resident Neuroscience Course

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Chapter 21. Coding of Sensory Information

  1. The philosophical view that the infant mind is a tabula rasa was championed by
    1. Immanuel Kant
    2. Gustav Fechner
    3. John Locke
    4. All of the above
  2. Johannes Muller's "law of specific sense energies" is illustrated by the finding that
    1. Contact with objects with a low temperature produces a sensation of cold
    2. Touch with a probe produces a stronger sensation if the pressure from the probe is greater
    3. Foveal sensory receptor density is high
    4. All of the above
  3. For a given receptor connected to a given afferent nerve fiber, stimulus strength is coded for by
    1. Rate of action potential firing
    2. A labelled line code
    3. Receptor potential
    4. The duration of action potential firing
  4. The perceived intensity of a stimulus is best described by a
    1. Linear function
    2. Logarithmic function
    3. Power function
    4. Function of the form E = mc2
  5. Inhibitory interneuron functions include
    1. To sharpen contrasts
    2. To reduce activity in slightly activated inputs
    3. To allow higher centers to modulate activity in relay nuclei
    4. All of the above
  6. Match the sensory receptor to the sensory modality (4 points)

    7.   
    A. Pacinian corpuscle ______________
    		 
    1. Taste
    		 
    B. Hair cell          ______________
    		 
    2. Proprioception
    		 
    C. Spindle organ      ______________
    		 
    3. Hearing
    		 
    D. Chemoreceptor      ______________
    		 
    4. Vibration
  7. A tree fell in a forest inhabited only by deaf creatures. Did it make a sound?
    1. Yes
    2. No


This is an open-book test due 12/4/01
A score of 80% or better is required. If your score is less, you are required to retake the test.

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