Fig. 10 : Schematic representation of the neural structures responsible
In dots (8). Nucleus reticularis pontis caudalis whose destruction suppresses
RPS. In black. An ascending part of the limbic midbrain circuit with the
"limbic midbrain area" of Nauta and Kuypers (1957). 1-2-5-6. Lesions of
the septum, subthalamic region, interpeduncular region, and medial part
of the anterior pontine tegmentum. These lesions suppress, totally or
in part, the fast cortical activity and the theta hippocampal rhythm during
RPS. 3-4. Lesions interrupting the ascending reticular activating system
at the mesencephalic level. These lesions, which suppress cortical arousal,
do not eliminate the possibility of a fast cortical activity during RPS.
In grey. Ponto-bulbar inhibitory reticular formation which is probably
responsible for the total atony during RPS.
(1962), with kind permission of Arch. Ital. Biol. (full-text)