Electrical Properties of Neurones

3.2 Passive electrical properties of neurones, 46

3.2.1 Biophysical properties of the

3.1 Introduction, 46

3.3.1 Action potentials, 56

3.3.2 Requirements for action neurone, 46

3.2.2 Ionic composition, 47

3.2.3 Ions and charge distribution, 48

3.2.4 The Nernst potential, 49

3.2.5 Resting potential and constant potential production, 58

3.3.3 Threshold potential, 58

3.3.4 Initiation of action potentials in vivo, 66 3.3.5 Electrical behaviour of autonomic ganglion cells, 66

3.4 Conduction of action potentials, 68

field equation, 49 3.2.6 Origin of the uneven

3.4.1 Frequency coding, 68

3.4.2 Factors involved in action cell membrane, 52 3.2.7 Electrogenic vs. non-electrogenic distribution of ions across the potential propagation, 68 3.4.3 Factors affecting conduction

3.3 Active properties of neurones, 56

ion movements, 56

velocity, 68 Passive properties, 69 Myelination, 73

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