[Compact micromanipulator for the chronic extracellular recording of neuronal activity in restrained and freely moving animals].

A design of a compact micromanipulator giving possibility to introduce the microelectrode into unlimited depth of the brain and to realize the penetration of it into the narrow area of trepanized cranial of the animal several times has been worked out and described. Small size and mass of the design allow to set up several micromanipulators on the cranial of different experimental animals and to record the neuronal activity of the different brain structures simultaneously.