Ionic Generation of Electrical Signals

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Presentation transcript:

Ionic Generation of Electrical Signals AMPA Receptor

Types of Electrical Signals

The Remarkable Giant Nerve Cells of a Squid

Recording Passive and Active Electrical Signals in a Nerve Cell

Ionic Movements Across Neuronal Membranes

Electrochemical Equilibrium

Extracellular and Intracellular Ion Concentrations

Resting and Action Potentials Entail Permeabilities to Different Ions

Depolarization Increases Na+ and K+ Conductances of the Squid Giant Axon

Mathematical Reconstruction of the Action Potential

Feedback Cycles Responsible for Membrane Potential Changes

Passive Current Flow in an Axon

Propagation of an Action Potential Affects Voltage Changes

Voltage-Gated Na+ and K+ Channels

Mathematical Reconstruction of the Action Potential

Action Potential Conduction

Saltatory Action Potential Conduction Along a Myelinated Axon

Speed of Action Potential Conduction in Unmyelinated Versus Myelinated Axons

Different Forms of Action Potentials A Squid B Frog motor neuron - axon C Frog motor neuron – cell body D Inferior olive cell body E Purkinje neuron cell body