Biology › Section N · Nervous and sensory systems › Topic N.2
How neurons communicate
Inside a neuron the message is electrical - a self-regenerating voltage spike. Between neurons it is chemical - a molecule handed across a gap and weighed against all the other advice.
In this topic
- Two languages: electricity and chemistry
- The charged membrane at rest
- Action potential: fire and reset
- Myelin and saltatory conduction
- The chemical synapse
- Clearing the cleft
- Electrical synapses and summation
- Plasticity: LTP and LTD
- Worked example: blocking the potassium channels
- Worked example: three inputs and a decision
- Common mistakes to avoid
- Key takeaways
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