Effects of signaled and unsignaled brain stimulation, water, and sucrose reinforcement on running behavior in rats.

Abstract
Groups of rats (4), reinforced with signaled electrical stimulation of the brain (S-ESB), immediate ESB (I-ESB), water, or sucrose, were run for 20 ten-trial sessions in a runway. For 10 sessions the intertrial interval (ITI) was 60 s and for 10 sessions the ITI was 5 s. Both ESB groups ran faster with the shorter ITI, but the ITI effect was significantly smaller for the S-ESB group. The water group showed no significant ITI effect, and the sucrose group ran faster with the longer ITI. All groups showed overnight decrements in running speed. It may be that all reinforcing stimuli have a response-facilitating effect on behavior and that this effect alone can account for both the overnight decrements and the differences in the ITI effect from group to group.

This publication has 1 reference indexed in Scilit: