5 - PSY308 Biopsychology Neurophysiology Overview Membrane Resting membrane Potentials Action Potentials Synaptic transmission Neuronal membrane

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PSY308 Biopsychology Neurophysiology
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Overview Membrane Resting membrane Potentials Action Potentials Synaptic transmission
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Lipids: • Polar heads Fatty acid tails Proteins hydrophobic hydrophilic Bear M.F. et al., Neuroscience: Exploring the Brain (2007) Neuronal membrane
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Transport across the membrane Ion channels Passive Gated Active *Chemically-gated *Voltage-gated -where ions freely pass through -needs energy for it to work
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Rosenzweig M.R. et al., Biological Psychology (2002) Membrane potential Resting potential -70 mV
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Unequal distribution of ions Rosenzweig M.R. et al., Biological Psychology (2002) Resting membrane potential Electrostatic gradient Concentration gradient Selective permeability Na + /K + pump Na+ K+ Why is there a difference?
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Movement of Ions Concentration gradient (diffusion/chemical) Electrostatic Forces Rosenzweig M.R. et al., Biological Psychology (2002)
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Rosenzweig M.R. et al., Biological Psychology (2002) Unequal distribution of ions
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This note was uploaded on 02/28/2010 for the course PSY 43790 taught by Professor Lee during the Spring '10 term at University of Texas at Austin.

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5 - PSY308 Biopsychology Neurophysiology Overview Membrane Resting membrane Potentials Action Potentials Synaptic transmission Neuronal membrane

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