Which of the following treatments in rats would be expected to increase locomotion and enhance the amount of cortical arousal evident in an EEG record?
a. electrical stimulation of the frontal cortex
b. damage to the locus coeruleus
c. damage to the raphe nuclei
d. electrical stimulation of the raphe nuclei
e. injection of high levels of GABA into the raphe nuclei
Question 2
If acetylcholine activity is high,
a. the animal is likely feeling drowsy or beginning to sleep.
b. there is decreased EEG-measured cortical arousal.
c. the brain waves are likely highly synchronized.
d. the brain waves are likely desynchronized.
e. nothing happens.
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