threshold potential
Neuron's ignition level
Threshold potential is the level of electrical charge a nerve or muscle cell must reach before it fires an action potential—the all-or-nothing signal that travels along the cell.
Below this threshold, stimuli produce no response; at or above it, the cell fires completely.
The neuron didn't fire because the stimulus failed to reach threshold potential.
- cell membraneOuter layer of cytoplasm
- excitabilityProneness to strong reactions
- all or nothingExtreme without compromise
- neuronImpulse-conducting cell
- nerve cellImpulse-transmitting body unit
nerve impulse · electrophysiology · bioelectricity · electrical signal · firing · axon · excitation · voltage · synapse · sodium · charge · resting · resting state · millivolt · signal · trigger · membrane · nerve
- neuroscienceneuron, MRI, brain, neurons, synapses
- electrophysiologyelectrodes, EEG, EMG, ECG, EKG
- Neurophysiologyneuron, neurotransmitter, nerve impulse, presynaptic, repolarization
- bioelectricityrepolarization, hyperpolarization, axon, voltage-gated, sodium channel
- nerve signalsnerve impulses, nerve impulse, nerve signals, neural activity, repolarization
- ion channelschloride channel, potassium channels, conductance, voltage-gated, ASIC
potential, threshold, potentials, thresholds, depolarization, action potential