Chapter two was all about the brain and how it works. I found it really cool to learn that when you do something, its not just one part of your brain working. It's really several parts all working together just to do a small thing. You may not even know a certain part of your brain is helping with something. And how your whole body is connected with neurons, and those neurons control almost everything you do. They transmit different signals and reactions between them.
The second thing that found I really interesting was the way that scientists can do a whole bunch of things with electrodes in the brain. They can implant an electrode into a rats brain, in its reward center. And with it implanted in that certain part of the brain, the rat would walk across an electrified grid. Not carrying about the shocks it was getting, because it just wanted to get to the stimulation pedal. So it could press the pedal and send an electrical impulse to the reward center of its brain.
Lastly the book talked about how a persons dominate hand could be inherited. And how in one study 150 babies were observed during the first two days of life. Two-thirds of them laid with their heads facing the right. And when they came back 5 months later those same two-thirds would reach for something with their right hand. And the ones that laid with their to the left reached for things with their left hand now. I found it interesting that they think that could be related to which hand is more dominate for a person. And how they think that either the persons genes or prenatal factors influence handedness.
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