Count to 10 - Anaesthetic Primary Podcast EP38 – Electrophysiology, Sleep & EEG | Anaesthetic Primary Topic | Neurophysiology & Pain | CT10
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Jun 22, 2025 Dive into the fascinating world of nerve conduction physiology and the essential differences between sleep and general anaesthesia. Explore how EEG measures brain activity, examining various processed types like BIS and entropy. Gain insights into sleep architecture and its systemic effects, alongside expert tips on tackling past exam questions related to these complex subjects. Perfect for anyone looking to deepen their understanding of neurophysiology and pain!
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Membrane Permeability Drives RMP
- Resting membrane potential (RMP) depends more on membrane permeability than absolute ion concentrations.
- Potassium permeability drives RMP but other factors like Na+/K+ ATPase and chloride also contribute.
Action Potential Sequence Simplified
- Action potentials are rapid membrane potential changes propagated along neuron membranes.
- They involve fast voltage-gated sodium channel opening, closure, and restoration by Na+/K+ ATPase.
Myelin Enables Saltatory Conduction
- Myelination, not axon diameter, is the principal determinant of conduction speed.
- Myelinated axons use saltatory conduction jumping between nodes of Ranvier for faster transmission.