MIT Researchers Explore How Rats Think

Ant writes "A Nature News article explains that, after running a maze, rats mentally replay their actions backwards." From the article: "As the rats ran along the track, the nerve cells fired in a very specific sequence. This is not surprising, because certain cells in this region are known to be triggered when an animal passes through a particular spot in a space. But the researchers were taken aback by what they saw when the rats were resting. Then, the same brain cells replayed the sequence of electrical firing over and over, but in reverse and speeded up. 'It's absolutely original; no one has ever seen this before at all,' says Edvard Moser, who studies memory at the Norwegian University of Science and Technology in Trondheim."

Comments

Interesting

[Belseth]

Sounds like it's a way of setting important memories. Being able to navigate a course is important to a rat's survival. It'd be interesting to see if this happens with all memories or just the most important for the rat to recall. Stress causes memories in humans to become more perminate. There was a study where people held their hand in ice cold water to see how it affected memory. The shock of the cold water increased retention dramatically. I'd be curious if the levels of stress hormones went up as well. Rerunning the memory may be a stress reaction to important information.

Re:interesting...

[Skreems]

Most creative thinkers already understand, at least intuitively, that the human brain will continue working on a problem even when a person is actively thinking about something else. How many programmers know that when you're beating your head against a problem, a good way to solve it is to go do something physical or repetitive, like play sports or video games or even sleep? Then when you come back, your brain has an answer for you, or at least has conceptualized the problem so you can get a better handle on it.

I don't know how much there is to officially back this up, but I think this is why OOP caught on so well, at least with some people. If you have a system made of interacting modular components, your brain doesn't have to conceptualize sections of some messy lines of ASM or C code... it can just use the constructs you've actually built into the system, so the "processing cost" of groking the system is much cheaper.