Multichannel Systems NeuroExplorer - Manual (Page 82)

2.20. Poincare Maps
For each spike, a point is displayed where the X coordinate of the point is the current interspike
interval and Y coordinate of the point is the preceding interspike interval.
This analysis does not generate numerical results since the graph is drawn directly from the data.
Some generic analysis statistics are available in the Summary of Numerical Results (see below).
Parameters
Parameter Description
Min Interval Time axis minimum in seconds.
Max Interval Time axis maximum in seconds
Log Axis Scale An option to use Log10 axis scales.
Select Data If Select Data is From Time Range, only the data from the specified (by
Select Data From and Select Data To parameters) time range will be used
in analysis. See also
Data Selection Options .
Select Data From Start of the time range in seconds.
Select Data To End of the time range in seconds.
Int. filter type Specifies if the analysis will use a single or multiple interval filters.
Interval filter Specifies the interval filter(s) that will be used to preselect data before
analysis. See also
Data Selection Options .
Summary of Numerical Results
The following information is available in the Summary of Numerical Results
Column Description
Variable Variable name.
YMin Y axis minimum.
YMax Y axis maximum.
Spikes The number of spikes used in calculation.
Mean Freq. Mean firing rate.
Algorithm
For each spike that occurred at time t[i], Poincare plot shows the point with the coordinates
(t[i] - t[i-1], t[i-1] - t[i-2]).
That is, the X coordinate of the point is the current interspike interval and Y coordinate of the point is
the preceding interspike interval.
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