Markers

Marker data type in NeuroExplorer is used to represent the series of timestamps recorded from external devices (for example, stimulation times recorded as pulses produced by the stimulus generator) together with other stimulus or trial information. Event data type stores only the times when the external events occurred.

NeuroExplorer creates Marker variables when it imports, for example, strobed events from Plexon data files.

Viewers

You can view both the marker timestamps and additional marker information in the Markers tab of the Data window:

../../../_images/markers.png

Extracting Events

Usually you will need to extract events with the specific trial information from the marker variables. To do this, use Marker | Split… and Marker | Extract… menu commands.

Marker Variables in Python

Python

Use Markers() function to get marker values of a marker variable:

import nex
doc = nex.GetActiveDocument()
markerValues = doc['Strobed'].Markers()
# print the second marker value of the first marker field
print(markerValues[0][1])