Related Experiment Video
Updated: Jul 11, 2026
08:30
Operant Procedures for Assessing Behavioral Flexibility in Rats
Published on: February 15, 2015
Involvement of the rat prefrontal cortex in a delayed reinforcement operant task
Yoshinori Izaki1, Sei-Etsu Fujiwara, Tatsuo Akema
1Department of Physiology, St Marianna University School of Medicine, Kawasaki, Japan. yizaki@marianna-u.ac.jp
Neuroreport
|October 9, 2007
Summary
The rat medial prefrontal cortex (PFC) is crucial for delayed reinforcement operant behavior. Inactivating the PFC impaired performance on a lever-press task, highlighting its role in this cognitive function.
Area of Science:
- Neuroscience
- Behavioral Neuroscience
- Cognitive Neuroscience
Background:
- The medial prefrontal cortex (PFC) is implicated in complex cognitive functions.
- Understanding the specific roles of the PFC in operant behavior, particularly involving delayed reinforcement, is essential.
Purpose of the Study:
- To investigate the involvement of the rat medial prefrontal cortex (PFC) in delayed reinforcement operant behavior.
- To elucidate the neural mechanisms underlying the PFC's contribution to this task.
Main Methods:
- Transient inactivation of the medial PFC and hippocampus in rats performing a delayed reinforcement lever-press task.
- Recording of prefrontal cortex multiple unit activity during the operant task.
Main Results:
- Inactivation of the medial PFC significantly impaired performance in the delayed reinforcement task.
- Hippocampal inactivation did not affect performance, suggesting a specific role for the PFC.
- Neuronal activity in the PFC decreased during the delay period of the task.
Conclusions:
- The medial prefrontal cortex (PFC) plays a critical role in delayed reinforcement operant behavior.
- Reduced neuronal activity in the PFC during the delay interval may be a key mechanism for this behavior.
