Viewing multiple histograms in 3d – Multichannel Systems NeuroExplorer User Manual
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4.1. Viewing Multiple Histograms in 3D
To view a set of histograms in 3 dimensions:
Calculate the histograms by applying any of the histogram analyses (Rate Histograms,
Interspike Interval Histograms, Auto- and Cross-correlograms, Perievent Histograms, etc.)
Select 3D | View Histograms in 3D menu command.
NeuroExplorer will open the 3D Viewer window and all the histograms in the NeuroExplorer graphics
view will be shown in a 3D graph:
Note that all the histograms are shown in the same scale. However, neurons often have very different
firing rates so that the histograms for the slow firing neurons may be displayed as having almost zero
values.
If you would like to view the variations of the histograms around their respective means, you can use
a separate menu command, 3D | View Histogram Variations in 3D. This option will allow you to
view the z-scores of histograms instead of the raw histogram values. z-score is calculated as:
z = (histogram_value - histogram_mean)/histogram_standard_deviation
Here is the same set of histograms as above shown using 3D | View Histogram Variations in 3D
menu command (the graph type is also changed from 'Stripes' to 'Walls'):
For more information on 3D Viewer options and parameters, see
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