Multichannel Systems NeuroExplorer - Manual (Page 119)

2.36. Autocorrelograms Versus Time
This analysis shows the dynamics of the autocorrelograms over time. It calculates multiple
autocorrelograms using a "sliding window" in time. Each autocorrelogram is shown as a vertical stripe
with colors representing the bin counts. Horizontal axis represents the position of the sliding window
in time.
Parameters
Parameter Description
XMin AutoCorr Autocorrelogram time axis minimum in seconds.
XMax AutoCorr Autocorrelogram time axis maximum in seconds.
Bin AutoCorr Autocorrelogram bin size in seconds.
Normalization Histogram units (Counts/Bin, Probability or Spikes/Second). See Algorithm
below.
Start Start of the first sliding window in seconds.
Duration Duration of the sliding window in seconds.
Shift How much sliding window is shifted each time.
Number of shifts The number of sliding windows to be used.
Matrix Scale Specifies color scale for drawing matrix.
X Axis (Sliding window
axis alignment) Allows to specify what values are shown in the sliding window axis. There
are two options: Start of Window and Center of Window.
Suppose your data has the strongest correlation at 50 seconds. This
means that the window that has 50 seconds as its center will show the
highest autocorrelation values. If the window width is 20 seconds, it will be
the window [40,60]. If you are using 'Start of window' option, you will see
the peak at 40 instead of 50 seconds. However, with 'Center of window'
option, the peak will be at 50 seconds.
Smooth Option to smooth the histogram after the calculation. See Post-Processing
Options for details.
Smooth Filter Width The width of the smooth filter. See Post-Processing Options for details.
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.
Interval filter Specifies the interval filter that will be used to preselect data before
analysis. See also
Data Selection Options .
Send to Matlab An option to send the matrix of numerical results to Matlab. See also
Matlab Options .
Matrix Name Specifies the name of the results matrix in Matlab workspace.
Matlab command Specifies a Matlab command that is executed after the numerical results
are sent to Matlab.
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