The Brain - The Brain I not only use all of the brains that...

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Click to edit Master subtitle style The Brain
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n I not only use all of the brains that I have, but all that I can borrow. ¨ Woodrow Wilson
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n The mind is what the brain does ¨ Neurons and brain structures are involved in n Emotion n Thinking n Language n Learning n Walking, talking n Sensing n Perceiving n Problem solving n Decision making n Consciousness (self-awareness)
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Steps leading to an Action Potential n Neuron at rest ¨ Na+ ions on the outside ¨ K+ ions on the inside ¨ Resting potential is -70mV
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n Neuron receives chemical information from other neurons at the synapse ¨ Neurotransmitters (NT) leave the terminal button moving across the synaptic cleft and attach to receptors on the dendrites ¨ If the NT causes the chemically dependent receptor channels to open, allowing Na+ into the neuron, the neuron becomes MORE positive (depolarized)
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n When the cell body becomes depolarized, the neuron will send (fire) an action potential n The action potential is the electrical impulse (signal) that is carried down the length of the axon n The electrical impulse causes vesicles of NT in the terminal button to fuse to the membrane to be released, thus affecting the next neurons
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This note was uploaded on 06/16/2008 for the course PSY 201 taught by Professor Skaggs during the Fall '07 term at Oregon State.

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The Brain - The Brain I not only use all of the brains that...

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