[Spatial distribution and activity of excited neurons after penicillin administration to the nucleus...

The central part of the nucleus reticularis gigantocellularis was examined in experiments on white anesthetized rats by microelectrodes in the constant stereotaxic coordinates before and after penicillin microinjection. It has been established that normal spatial distribution of gigantocellular neurons was characterized by irregular disposition of the active neurons, i.e. most of them were observed in caudo-medial and central regions. Penicillin microinjection produced enhancement of the number of excited neurons and spatial redistribution of the density of active neurons in caudo-lateral and ventral regions. Correlation changes between three main types of neurons were found in nonsequential interval histograms (unimodal, bimodal and exponential).