key term - Depolarization

Definition

Depolarization is when there's a shift in a neuron's electrical charge that allows an action potential (nerve impulse) to occur.

Related terms

Action Potential:

This refers to the change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell.

Resting Potential:

This refers to the state where no neural impulse is being transmitted; it’s essentially ‘at rest’.

Hyperpolarization: This occurs when there’s an increase in negative charge inside the neuron making it less likely for an action potential to occur.