Multichannel Systems MC_Rack Manual - Manual (Page 150)

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Only waveforms that satisfy both criteria (slope and amplitude) are considered spikes.
See also the preceding illustrations "Spike detection" and "Not detected waveforms".
4.13.4 Spike Cutouts
You can define the size of the spike cutout in the ranges of 100 ms Pre-Trigger and 1500 ms
Post-Trigger times. The detection event is the point of time when the threshold has been crossed
(threshold method), or the point of time, for which the amplitude and slope criteria have been
fulfilled (slope method).
The data from pre-trigger to post-trigger event is the spike cutout. The Dead Time determines,
for how long after a detection event no new detection event is accepted. You can define
overlapping cutouts, that is, the Dead Time can be set lower than the Post-Trigger time.
This makes sense for monitoring cardiac arrhythmia, for example. But please note that this affects
the computer load. It is recommended to set the Dead Time to at least the Post-Trigger time for
saving computer performance.
The spike cutouts form a new data stream, the Spike stream, which can be sorted, analyzed,
displayed, recorded, and so on.
Extracting timestamps only
If you are interested in the spike rate or spatial distribution of spikes but not in the waveform
information, you can extract only the detection events of spikes as single data points. This saves
computer performance and hard disk space. Please see chapter ”Extracting Timestamps only" in
"Burst Analysis”.