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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.
A further division by the interval length Δt yields time-dependent firing rate r(t) of the neuron, which is equivalent to the spike density of PSTH (Chapter 1.5 in [14]). For sufficiently small Δt, r(t)Δt is the average number of spikes occurring between times t and t+Δt over multiple trials.
Integrate-and-fire models with output noise can be used to predict the peristimulus time histogram (PSTH) of real neurons under arbitrary time-dependent input. [22] For non-adaptive integrate-and-fire neurons, the interval distribution under constant stimulation can be calculated from stationary renewal theory. [27]
Scientists have identified various retinal vascular indicators, 29 of which were significantly associated with a person's first-time stroke risk, providing a vascular "fingerprint."
Dozens of Department of Education employees received letters as business hours closed Friday placing them on administrative leave, according to a copy of one letter obtained by ABC News.
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Stemplot : A stemplot (or stem-and-leaf plot), in statistics, is a device for presenting quantitative data in a graphical format, similar to a histogram, to assist in visualizing the shape of a distribution. They evolved from Arthur Bowley's work in the early 1900s, and are useful tools in exploratory data analysis.
"The 2025 Clock time signals that the world is on a course of unprecedented risk, and that continuing on the current path is a form of madness," the Bulletin said. "The United States, China, and ...