Waveforms

The waveform data type is used in NeuroExplorer to store the spike waveform values together with the spike timestamps. The following figure shows two waveform variables: sig001i_wf and sig002a_wf:

../../../_images/waveforms.png

The waveform data may not be imported by default from the data files created by the data acquisition systems. Use View | Data Import Options menu command to specify which data types NeuroExplorer will import from the data files.

For most of the timestamp analyses, only the waveform timestamps are used. In the following analyses, the waveform shapes are used:

  • Rate Histograms

  • Rasters

  • Perievent Histograms (instead of PST, NeuroExplorer calculates spike-triggered average for a waveform variable)

  • Waveform Comparison

  • Sort Spikes

Viewers

You can view the waveforms of the selected variables in the graphical display (View | 1D Data Viewer menu command, see figure above).

Numerical values of the waveforms and their timestamps are shown in the Waveforms sheet of the Data view.

../../../_images/wavevalues.png

To select a different waveform variable, click in the cell located in the row 1 of the Variable column (the cell shows sig001a_wf in the figure above).

Waveform values are shown in columns labeled 1, 2, etc.