500
One example of a delayed response task involved monkeys and food. Describe the task and the main finding.
The monkey sees a food reward in one of two food wells. Both wells are then covered, a screen is lowered, and then there is a delay before the screen is raised again. When the screen is raised, the monkey must remember which well had the food and uncover the correct food well to obtain a reward. However, if their prefrontal cortex is removed, their performance drops to chance level -the prefrontal (PF) cortex is important for holding information for brief periods of time.