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Oct 3 - Split Brain

Oct 3 - Split Brain - Tuesday October 4 2011 The Brain...

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Tuesday, October 4, 2011 The Brain Cortical Organization Neural Disorders Lateralization & Split Brain Next Time: Genetics Scan: p.109 – 116 How are the cortical areas organized? What happens if these areas are damaged? Is there a separate consciousness in each hemisphere? NEURON A AND NEURON B SYNAPSE WITH NEURON C. YOU ARE MEASURING THE ELECTRICAL ACTIVITY IN NEURON C. WHEN NEURON A FIRES, AN ACTION POTENTIAL IS GENERATED IN NEURON C. BUT WHEN BOTH A AND B ARE STIMULATED, THERE IS NO ACTION POTENTIAL OBSERVED IN C. HOW CAN YOU EXPLAIN THIS? a. The neurotransmitter in B is ACh b. Neuron A is disinhibited c. Neuron B generates an IPSP Projection Areas 1. Topographic Representation 2. Contralateral Control 3. Functional Assignment of Space Topographic Representation of the Motor Cortex
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Tuesday, October 4, 2011 Contralateral – opposite sides E.g., a stroke Exception: visual system - right hemisphere is in control of the right visual field How Do We Get This Information?
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