# Useful things to know about the Trial List

To open the Trial List

Choose Setup > Trial List, or in the Experiment Explorer click Trial List.

To show and hide variables in the Trial List

1.Do one of the following:

Click the Show/Hide button on the toolbar and select Variables.

Right-click a column header and choose Show Variable.

2.In the Show Variables window, select the variables of your choice and click Apply.

tip Under System, also choose Subject not found and Missed samples. The two variables give useful information about the reliability of your data.

The statistics are shown in two columns:

See also

▪System variables

To sort columns in the Trial List

You can change the order of the columns. Click the column header to select the column of your choice and then drag it to the new position. While you drag it, a red line shows the insertion point of the column.

To show and hide row headers in the Trial List

Do one of the following:

▪Click the Show/Hide button on the toolbar.

Select Row Headers and then the headers you want to display.

▪Right-click on any of the headers (Trial, Arena, Subject, No.) and select which headers you want to display.

Import External Data button

If you have the External Data Module, the Import External Data button is available on the toolbar of the Trial List.

Click this button to import external data like EEG, or Heart Rate into EthoVision XT and synchronize it with the tracks.