Multichannel Systems NeuroExplorer User Manual
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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.
Smooth histogram
An option to smooth the histogram after the calculation. See
for details.
Smooth Filter Width
The width of the smooth filter. See
for details.
Summary of Numerical Results
The following information is available in the Summary of Numerical Results
Column
Description
Variable
Variable name.
Reference
Reference variable name.
NumRefEvents
The number of reference events used in calculation.
YMin
Histogram minimum.
YMax
Histogram maximum.
Spikes
The number of spikes used in calculation.
Filter Length
The length of all the intervals of the interval filter (if a filter was used) or the
length or the recording session (in seconds).
Mean Freq.
Mean firing rate (Spikes/Filter_Length).
Mean Hist.
The mean of the histogram bin values.
St. Dev. Hist.
The standard deviation of the histogram bin values.
St. Err. Mean. Hist.
The standard error of mean of the histogram bin values.
Algorithm
For the perievent histogram calculation, see
Let ref[i] be the array of timestamps of the reference event,
sortref[i] be the array of timestamps of the sort event.
If Sort Trials is selected, the following algorithm is used:
1) for each timestamp ref[k], NeuroExplorer finds the smallest sortref[i], such that
sortref[i] > ref[k]
2) the distance between two events is calculated:
dist[k] = sortref[i] - ref[k]
3) the trials ref[k] are sorted array sorted in ascending or descending order of dist[k].
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