Interspike interval histograms – Multichannel Systems NeuroExplorer User Manual
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2.9. Interspike Interval Histograms
Interspike interval histogram shows the conditional probability of a first spike at time t0+t after a spike
at time t0.
Parameters
Parameter
Description
Min Interval
Minimum interspike interval in seconds.
Max Interval
Maximum interspike interval in seconds.
Bin
Bin size in seconds.
Normalization
Histogram units (Counts/Bin, Probability or Spikes/Second). See Algorithm
below.
Log Bins and X Axis
An option to use Log10 interval scale (see Algorithm below for details).
Bins per decade
A bin size option if Log option is selected (see Algorithm below for details).
Y Axis Limit (%)
An option to "zoom in" small histogram values. This parameter specifies
the maximum of Y axis. If it is 100%, the Y axis maximum equals to the
maximum bin value. If it is, for example, 10%, Y axis maximum is set to
10% of the bin max and the small bin values have better visibility.
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
.
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
Create filter on-the-fly
Specifies if a temporary interval filter needs to be created (and used to
preselect data).
Create filter around
Specifies an event that will be used to create a temporary filter.
Start offset
Offset (in seconds, relative to the event specified in Create filter around
parameter) for the start of interval for the temporary filter.
End offset
Offset (in seconds, relative to the event specified in Create filter around
parameter) for the end of interval for the temporary filter.
Fix overlaps
An option to automatically merge the overlapping intervals in the temporary
filter.
Overlay Graphs
An option to draw several histograms in each graph. This option requires
that Int. filter type specifies that multiple interval filters will be used (either
Table (row) or Table (col)).
Smooth
Option to smooth the histogram after the calculation. See
for details.
Smooth Filter Width
The width of the smooth filter. See
for details.
Add to Results / Bin left An option to add an additional vector (containing a left edge of each bin) to
the matrix of numerical results.
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