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Unformatted text preview: Na is zero? what happens if P Na >> P K ? E m 2) multiple spikes @ one point 1) absolute refractory period 2) Na channel gating: closed – open – inactivated 3) relative refractory period 4) increase of spike frequency with stimulus intensity 1) spike initiation zone 2) spike @ A is stimulus for spike @ B, etc. 3) dependence of conduction velocity on axon diameter 4) dependence of conduction velocity on capacitance 5) myelin, nodes of Ranvier, demyelination 3) one spike propagating along an axon...
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- Spring '08
- voltage-gated Na channels, spike initiation zone, one spike, leak Na channels