Multichannel Systems NeuroExplorer - Manual (Page 65)

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NeuroExplorer calculates the histogram peak statistics the following way:
Maximum of the histogram is found
If the histogram contains several maxima with the same value, peak statistics are not calculated
Otherwise, the center of the bin, where the histogram reaches maximum, is shown as Peak
Position in the Summary of Numerical results
The mean M and standard deviation S of the bin values of the histogram background are
calculated: If Background parameter is set as Bins outside peak/trough, bins outside peak and
trough (i.e., bins that are more than PeakWidth/2 away from the bin with the histogram
maximum and the bin with the histogram minimum) are used to calculate M and S If Background
parameter is set as Shoulders, bins that are to the left of Left Shoulder or to the right of Right
Shoulder parameters are used to calculate M and S
The value M (mean of the background bin values) is shown as Background Mean in the
Summary of Numerical results
The value S (standard deviation of the background bin values) is shown as Background Stdev
in the Summary of Numerical results
The value (HistogramMaximum – M)/S is shown as Peak Z-score
The value (HistogramMaximum + M)/2 is shown as Peak Half Height
Histogram intersects a horizontal line drawn at Peak Half Height at time points TLeft and TRight.
(TRight - TLeft) is shown as Peak Width
Histogram trough statistics are calculated in a similar way. The only difference is that histogram
minimum instead of histogram maximum is analyzed.
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