Unit activity of the medial wall of the frontal cortex during delayed performance in rats.

Unit activity from the medial frontal cortex was studied in rats during delayed performance on the U-shaped maze. Most units sampled responded to more than one event in the experimental sequence. Spatio-selective units suggest that this area is involved in short-term memory. Several types of spatio-selective units were recorded. Specific responses of spatio-selective units appear linked with a level of training. A possible role of the medial wall for goal-directed behavior based on probability prognosis is discussed.

[Neuronal activity of the medial wall of the frontal cortex of the rat during performance of delayed reactions]. / Aktivnost' neironov medial'noi stenki frontal'noi kory mozga krys pri vypolnenii otsrochennykh reaktsii.

Unit activity of the medial wall of the rat prefrontal cortex was studied during delayed response in the U-shaped maze. Prefrontal units were shown to be polysensory. Rhythmical stimulation induced habituation of unit responses. Spatio-selective neurones were found which means that medial part of the prefrontal area is involved in short-term memory. The role of the area is discussed in relation to the goal-directed behaviour.