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Figure 4 : Subtotal lesion of the raphe system in the cat
Rostral section at the level of ( 1) the raphe centralis superior and
dorsalis nuclei, (2) the raphe pontis, and (3 and 4) the raphe magmls
and pallidus. The mean percentage of slow-wave sleep for this particular
cat was 8 percent; it manifested no paradoxical sleep during 12 days of
recording. (B) Rostral sections of the pons: ( 1) Glenner coloration shows
the monoamine oxidase (dark areas) in the nucleus locus coeruleus, in
the nuclei parabrachialis medialis and lateralis, and, to a lesser extent,
in the raphe system (2) bilateral destruction of the nuclells locus coeruleus
which selectively suppresses paradoxical sleep.
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