Chapter 8 Self-test questions

. Which of the following statements are correct? Please select all that apply.

Corollary discharges enable organisms to distinguish sensory input arising from the outside world from sensory input generated by the animal's own action.

Corollary discharges are copies of motor commands used to produce two motor actions simultaneously.

Corollary discharges are copies of motor commands that do not produce any motor action but influence sensory processing.

Corollary discharges are a neural mechanism to modulate sensorimotor integration.

. The high output voltage generated by the electric organs of strongly electric fish is achieved by arrangement of the electrocytes in parallel.

True

False

. Finish this sentence correctly: Electroreceptors are most closely related to

photoreceptors in the retina.

proprioceptors in muscles.

chemoreceptors in the olfactory epithelium.

mechanoreceptors of the lateral line.

. Which of the following statements about the jamming avoidance response of the weakly electric fish Eigenmannia is not correct?

The jamming avoidance response involves a shifting of the fish's own frequency away from the frequency of the interfering signal.

To execute a correct jamming avoidance response, Eigenmannia uses the frequency of its own pacemaker nucleus as a reference.

The decision to shift the frequency of its own electric organ discharge either up or down is based on the evaluation of afferent information contained in the interference pattern resulting from the mixing of its own discharge and that of the neighbor.

The jamming avoidance response is a behavioral strategy to avoid detrimental effects on the electrolocation ability caused by signal interference of its own electric discharge with that of a neighbor fish discharging at similar frequency.

. Choose the correct way to end this sentence: The neural circuit in the electrosensory lateral line lobe involved in processing of phase and amplitude information extracted from electrosensory stimuli reflects a

multiplexing architecture.

parallel processing architecture.

. What is the correct ending to this sentence: Amplitude and phase information extracted from electrosensory stimuli converge in the

electrosensory lateral line lobe.

torus semicircularis.

nucleus electrosensorius.

pacemaker nucleus.

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