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We spent much of today's class talking about movement and how different parts of the brain control movement. This sparked a thought, I have a friend who sleepwalks, and when I saw sleepwalks I mean that she has actually left her house befoer and started walking along the road. She usually is carrying out some common activity such as getting ready for school, or she is trying to prevent something from happening (in one situation she was trying to go downstairs to turn off the television because it wouldn't turn off in her dream). In either situation she goes through very complex movements and situations, all while asleep.

How does this play into what we already know about movement and the brain? We have established that you do not need the I-function to have movement (even complex movements) but when a person is asleep shouldn't that prevent movement? Why do some people sleepwalk and others do not? How does all that we know about movement explain sleepwalking?