1.20.11 - 1.20.11 Cognitive Neuroscience Creases=sulkus...

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1.20.11 Cognitive Neuroscience Creases=sulkus Coretex- 3 mm ribbon that goes all around your brain Most cognitive processes take place here 6 layers of cortex Neuron Cell body (soma)- mechanisms to keep cell alive Dendrite- receive signals feorm other neurons Axon – transmit signals to other neurons Recording from a Neuron Edgar Adrian (1920s) Difference in charge between recording electrode and reference electrode Action Potential Very fast Change in the voltage inside the neuron and it’s what the neuron does when it is sending a signal Resting - no neuron activity = -70mv (inside is more negative than outside the neuron) Depolarization- Reaches threshold for action potential (~ =55mv) = action potential Repolarization- back to resting potential What causes changes in polarization? Resting -70mv o NA+ outside o K+ inside Sodium comes into the neuron when it is stimulated/excited by an outside source. If enough comes in then it reaches a threshold
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This note was uploaded on 02/14/2011 for the course PSYC 4100 taught by Professor Unsworth during the Spring '09 term at UGA.

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1.20.11 - 1.20.11 Cognitive Neuroscience Creases=sulkus...

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