Retention of discrimination and avoidance habits following lesions in the interpeduncular nucleus.

Publisher Website
Google Scholar
Abstract
Rats with electrodes chronically implanted in the interpeduncular nucleus (IPN) were trained in both brightness discrimination and avoidance conditioning. Ss were tested for retention 1 and 7 days after sustaining lesions produced through the electrodes. Contrary to previous studies, no. consistent relationship was found between IPN damage and retention of the brightness discrimination habit, nor did IPN lesioned Ss differ significantly from controls on this task. Ss in which the nearby ventral tegmental decussation (DTV) was also damaged, showed a significant loss of retention, indicating a magnitude of lesion effect. In avoidance conditioning, Ss with damage to IPN or IPN + DTV were inferior to controls when tested 7 days after lesioning but not on the 1st postlesion day.

This publication has 3 references indexed in Scilit: