Multichannel-systems NeuroExplorer Manual do Utilizador descarregar pdf (Página 61)

2.11. Perievent Histograms

Perievent Histogram shows the conditional probability of a spike at time t0+t on the condition that

there is a reference event at time t0.

Parameters

Parameter Description

Reference Type Specifies if the analysis will use a single or multiple reference events.

Reference Specifies a reference neuron or event (or a group of reference neurons or

events).

XMin Histogram time axis minimum in seconds.

XMax Histogram time axis maximum in seconds

Bin Bin size in seconds.

Normalization Histogram units (Counts/Bin, Probability, Spikes/Second or Z-score). See

Algorithm below.

No Selfcount An option not to count reference events if the target event is the same as

the reference event (prevents a histogram to have a huge peak at zero

when calculating PSTH versus itself).

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.

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)).

Overlay Options Specifies line colors and line styles for overlaid graphs.

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.

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