AU10neurooutline

AU10neurooutline - 9/26/10 1 2 3 4 Neuroscience Why...

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9/26/10 1 Neuroscience Why Biological Psychology? Cells of Nervous Systems Neurons Action Potential Synapse Neurotransmitters Neural Networks Brain Imaging Techniques Regions of the Brain Functions of regions Lateralization of the Brain The Brain Has aprox. 100,000,000,000 (100 billion) neurons. Octopus has 300 million neurons. More neurons in human brains than stars in the Milky Way! If we line up all the neurons in a brain they will extend for 600 miles! Each neuron is connected to aprox. 10,000 other neurons. Velocity of signal up to 250 miles/hours. Why Biological Psychology? Do we use 10% of our brain? Do we have a mind and a body? What makes you think? What makes you feel? What makes you move? Do we have free will? Why Biological Psychology? Brain is an information processing organ Receives information (input) Process information Directs the actions of the whole body (output) Cells of Nervous System Glial Cells: “Assistants” of neurons 1 2 3 4 5
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9/26/10 2 Hold neurons together Direct the growth of neurons Keep chemical environment stable Provide energy Heal neurons Cells of Nervous System Neurons Membrane Nucleus Cell body Axon Dendrites Synapse Action Potential First you have to know some things about the membrane Semi permeable membrane Polarized Channels Some basic Physics principles: Diffusion Opposites attract Action Potential Channels for Sodium, Potassium and Chloride are closed Sodium channels are voltage sensitive When channels open the neuron becomes depolarized All or nothing! Propagation
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This note was uploaded on 12/26/2011 for the course PSYCH 100 taught by Professor H during the Fall '07 term at Ohio State.

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AU10neurooutline - 9/26/10 1 2 3 4 Neuroscience Why...

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