視床に於ける機能の分化

特にrecruiting responseを中心として

抄録

It is generally accepted that the anesthetizing time of rabbits with Barbiturate is prolonged following administration of a certain amount of Cardiazol.
In the present experimentation a study was made of the effects of these drugs on the action potential in the central nervous system.
The arousal reaction both on the cerebral cortex and hyppocampus which develops following the stimulation of the brain stem reticular formation was no effect by administration of Cardiazol (10mg/kg, i. v. ) after Barbiturate (10mg/kg, i. v. ).
Following the above experiment, a pursuance was made of the effects of drugs on recruiting response which appeared following the stimulation of the nucl. centrum medianum and the nucl. ventralis anterior.
It was revealed that recruiting response to these nuclei showed a different susceptibility depending upon the agent administered. A series of the experiment of nucl. centrum medianum has demonstrated a trend of increase in recruiting response following administration of Cardiazol. However recruiting response in a case of the nucl. ventralis anterior was depressed following administration of Cardiazol.
From above results, it was asserted that what directly concerned the loss of senses was nucl. centrum medianum, not nucl. ventralis anteior, and that nucl. ventralis anterior might play an important role in the development of recruiting response wave, i. e., a consideration of function apart from wave form.