Entropy Encoding in the Brain?

Science to Go reports:

"Researchers led by neuroscientist Joe Tsien found that the brain appears to have a system of repeatedly replaying and reinforcing the same cellular event that led to the initial formation of a memory. The reinforcement is critical for creating the cell-to-cell connections that constitute long-term memories, the researchers found."

Remember Pavlov?

The idea is that coincidence detectors remove redundancy in neuronal spike trains. The rat in Tsien's experiment could associate the vision of the water pool with muscle reaction required to escape. So the brain gets a learning short fut, a sort of Cliff Notes for the complex problem of getting out of the water,

The debate here is when the spike trains cause some protein build up, dendrite growth, that makes long term memory. Coincidence detectors appear on the surface, cortical, I think. The brain embeds the past, so to speak.

Can we find out whether we get a thrill when we coincidence detect? Remember the seven things in a row we remember? A seven level entropy encoder, pretty neat?

I am reading through some of the papers that look for entropy efficiency in spike trains. The complement of entropy is redundancy. The brain might want less redundancy, it means less work.