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Chapter 01 of 5

The Spark at the Gate

Master the action potential and the voltage-gated sentinels of the axon.

1. The Gap

   The Great Divide

   Neurons don't actually touch. Every thought must cross a microscopic, watery chasm called the synaptic cleft.

2. The Signal

   Electricity vs Chemistry

   While neurons talk to each other via chemicals, they talk to themselves through rapid electrical pulses.

3. Mechanism

   The Action Potential

   This self-propagating electrical wave travels down the axon, acting as the 'spark' for all neural communication.