In biology, depolarization or hypopolarization[1][2] is a change within a cell, during which the cell undergoes a shift in electric charge distribution, resulting in less negative charge inside the cell …

Dec 11, 2024 · Depolarization and repolarization are essential parts of the heart’s cycle, affecting muscle contraction and relaxation. In simpler terms, depolarization is when the heart cells fire off an …

Apr 30, 2024 · Depolarization is the cellular event characterized by the shift in the distribution of electric charges within a cell, particularly evident in cell membranes, majorly neural membranes for the …

Aug 5, 2025 · Depolarization is a fundamental electrical process in living organisms, involving rapid changes in the electrical charge across cell membranes. This alteration in electrical potential enables …

May 29, 2023 · Depolarization is when a change occurs inside a cell that causes the distribution of electric charges to alter, leaving the cell with a less negative charge than the outside. Numerous cell …

In a phenomenon known as electrical depolarization, an abnormal flux of ions triggers neurons to fire, moving up from the brain stem and into regions including the cortex.

Depolarization —a decrease in negative charge—constitutes an excitatory PSP because, if the neuron reaches the critical threshold potential, it can excite the generation of a nerve impulse (action potential).

Cell depolarization, or membrane depolarization, is a process that shifts the electrical charge distribution so that the cell is less negatively charged compared to the environment. In other...

Depolarization typically occurs when a neuron receives a stimulus strong enough to open sodium channels, leading to an influx of Na+ ions. The threshold for depolarization is usually around -55mV, …

Depolarization - movement of a cell's membrane potential to a more positive value (i.e. movement closer to zero from resting membrane potential). When a neuron is depolarized, it is more likely to fire an …