Biology_and_Psychology__Part_2

Biology_and_Psychology__Part_2 - “bad” associations...

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Neurons, Learning, and Brain Plasticity: How does the brain work?
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How Neurons Work: Axons and Dendrites
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The Synaptic Cleft
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Neural Transmission
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Transmission at the Cleft
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But how can such a simple thing like a neuron produce “intelligence”?
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First, start with some simple neurons
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Second, then you get a lot of them
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Third, train the network to strengthen some connections and weaken others
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Neural Network Demonstration My Checker-Playing, Skittle- Employing Neural Network
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Learning Rules Learning Rules: If move leads to a win add a skittle to the “links/moves” leading to the win: Strengthen these “good” associations If move leads to a loss, eat the final move’s skittle: Weaken/delete these
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Unformatted text preview: “bad” associations Okay, Let’s Play! Intelligence and Neural Connections • Overall conclusion: – The magic of the brain is due to three things: • First, the sheer number of neural connections. • Second, the information that is encoded in the strengths of those connections (i.e., Some connections are weak and some are strong due to learning, and those weak and strong connections encode intelligent behavior as we saw in the Skittles demo). • Third, and finally, the number of connections and their strengths are dynamic . They are constantly changing to encode ever more information. In sum, your brain has been re-wiring itself as you read this slide…...
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