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What does PERISTIMULUS TIME HISTOGRAM mean? PERISTIMULUS TIME HISTOGRAM meaning - PERISTIMULUS TIME HISTOGRAM definition - PERISTIMULUS TIME HISTOGRAM explanation. What is the meaning of PERISTIMULUS TIME HISTOGRAM? What is the definition of PERISTIMULUS TIME HISTOGRAM? What does PERISTIMULUS TIME HISTOGRAM stand for? What is PERISTIMULUS TIME HISTOGRAM meaning? What is PERISTIMULUS TIME HISTOGRAM definition?

Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.

In neurophysiology, peristimulus time histogram and poststimulus time histogram, both abbreviated PSTH or PST histogram, are histograms of the times at which neurons fire. It is also sometimes called pre event time histogram or PETH. These histograms are used to visualize the rate and timing of neuronal spike discharges in relation to an external stimulus or event. The peristimulus time histogram is sometimes called perievent time histogram, and post-stimulus and peri-stimulus are often hyphenated.

The prefix peri, for through, is typically used in the case of periodic stimuli, in which case the PSTH show neuron firing times wrapped to one cycle of the stimulus. The prefix post is used when the PSTH shows the timing of neuron firings in response to a stimulus event or onset.

To make a PSTH, a spike train recorded from a single neuron is aligned with the onset, or a fixed phase point, of an identical stimulus repeatedly presented to an animal. The aligned sequences are superimposed in time, and then used to construct a histogram.