A new study provides fascinating insight into how we recall experiences. Led by Dr. Itzhak Fried of UCLA, it reports that the neurons we use when we experience an event are reactivated when we recall that event later on. Science writer Benedict Carey and Daniel Schacter of Harvard University discuss.

Watch the discussion:

This episode originally aired 9/5/2008.

For more about the function of the brain visit The Human Spark, featuring blog posts by Alan Alda written as he explores the inner workings of the human mind.