Brain Cells (1) - Brain Cells The Neuron Hypothesis holds...

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Brain Cells The Neuron Hypothesis holds that the neuron is the functional unit of the brain, and therefore of mental events Neurons: 100 billion Glia: 1 trillion o Myelin o Other Support Roles Key parts of the Neuron Dendrites reduce signals from other neurons Axon sends signal toward other neurons Myelinated Segments (Myelin) o Speeds up Action Potentials o Communicate more rapidly Communication Within A Neuron is Electrical o Based on ionic charges (Think: Battery) o Where you get AP Characteristics of the AP Solitary Conduction o He’s going for SPEED Communication Between Neurons is Chemical Molecules of neurotransmitter bind and (unbind) receptors which are located on the postsynaptic membrane o “Lock-and-Key” Psychoactive Drugs work by altering these normal processes in various ways o The process of re-uptake of now the drugs work The presynaptic cell takes its molecules back up Key Neurotransmitters o Classic NTs:
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o Acetylcholine (ACh)
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Brain Cells (1) - Brain Cells The Neuron Hypothesis holds...

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