Multichannel-systems NeuroExplorer Manual do Utilizador descarregar pdf (Página 80)

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2.18. Instant Frequency

The instant frequency display shows the instantaneous frequency of the spike train (at the end of

each interspike interval, the inverted interspike interval is drawn as a vertical line).

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

XMin Time axis minimum in seconds.

XMax Time axis maximum in seconds

Graph Style An option to draw vertical lines or points.

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

The instant frequency display shows the instantaneous frequency of the spike train.

For each spike that occurred at time t[i] it draws the vertical line

from point ( t[i], 0.) to point (t[i], 1/(t[i] - t[i-1])),

where t[i-1] is the time of the preceding spike.

In other words, at the end of each interspike interval, the inverted interspike interval is drawn as a

vertical line.

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