up Inquisit Language Reference

eyetracker element

The following extensions to the eyetracker element are supported by the Tobii plugin.

Syntax

<eyetracker>
/ calibrationmode = value
/ hostname = value
/ illuminationmode = value
/ ipaddress = value
/ lowblinkmode = value
/ maxfixationtime = maxfixationtime
/ minfixationtime = minfixationtime
/ saccadethreshold = saccadethreshold
/ unitname = value
</eyetracker>

Properties

eyetracker.ipaddress
eyetracker.maxfixationtime
eyetracker.minfixationtime
eyetracker.saccadethreshold
eyetracker.version

Functions

None.

Remarks

The attributes and properties here are specific to the Tobii Eyetracker plugin, providing additional Tobii-specific functionality beyond what is provided in the generic eyetracker element. To use these extensions, the plugin attribute must be set to "tobii".

To use Inquisit with Tobii eye trackers, perform the following steps:
* Set up the eyetracker according to Tobii's instructions. Make sure it is plugged into your local network.
* Open an Inquisit script that defines the eyetracker element with plugin attribute set to "tobii" (sample scripts are available from our library)
* Run the script. You will be asked to register the Inquisit 5 Tobii Plugin if you haven't already.

How to Program the Tobii Eye Tracker Plugin

Examples

The following defines an eyetracker element that connects to a Tobii eyetracker at the given network ip address.

<eyetracker>
/ plugin = "tobii"
/ ipaddress = "168.192.0.22"
</eyetracker>

The following defines a text element that displays the current width of the right pupil:

<text rightpupil>
/ items = ("Right Pupil Width: <% eyetracker.lastrightpupilwidth %>")
</text>

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