An electrical stimulus below threshold strength fails to elicit a propagated spike potential.

A single unit is defined as a single, firing neuron whose spike potentials are distinctly isolated by a recording microelectrode.

Spike potentials are one of the action potentials, which occur in electrical activity of smooth muscle contraction in animals.

A background slow variation in electrical potential has been described (basal electrical rhythm,) with superimposed shorter duration, larger amplitude potentials (spike potentials or electrical response activity).

Gastrin and pentagastrin do not affect proximal or distal colonic segmenting pressure activity, although pentagastrin does increase the number of sigmoid colonic myoelectrical spike potentials in normal subjects.

This radial EOG channel is sensitive to the saccadic spike potentials stemming from the extra-ocular muscles at the onset of saccades, and allows reliable detection of even miniature saccades.

The spike potentials last 10 to 40 times as long in gastrointestinal muscle as the action potentials in large nerve fibers, each gastrointestinal spike lasting as long as 10 to 20 milliseconds.