Introduction

Some general tips and tricks about Tobii eye tracking are provided below.

Tips & Tricks

• Setup the eye tracker. When using a remote eye tracker (Fusion, X3-120, X2-60), make sure that the eye tracker is mapped to the screen. To map the eye tracker, do the Display Setup in the Eye Tracker Manager.
• Connection loss. Although it does not happen often, it is possible that the connection is lost with the eye tracker during your experiment. When this happens, not all software packages inform you about this.
  • Tobii Pro Lab does not do anything, the task continues and it is not clear that connection was lost during any point of the experiment. It is advised to always shortly inspect your data after collection. Of course, it is not necessary to view the whole recording, but a few parts would be advised.
  • Tobii Studio gives a warning when connection is lost. The task continues, but the warning stays on the screen until it is clicked away. When the task is run without a moderator screen (that is, with only one screen) it will be unclear to the experimenter that the connection is lost, and has to rely on the participant to relay the message.
  • OpenSesame with PyGaze does not do anything, the task continues and it is not clear that connection was lost during any point of the experiment. It is advised to always shortly inspect your data file. When connection is lost, data is not saved to the data file anymore. A quick way to check whether data is missing is to look at the size of your data file. When it is a lot smaller than usual, this could be caused by connection loss.
  • E-Prime with EET and/or TPL package does not do anything, the task continues and it is not clear that connection was lost during any point of the experiment. When using EET and a gazedata file is saved, it is advised to always shortly inspect your data file. When connection is lost, data is not saved to the data file anymore. A quick way to check whether data is missing is to look at the size of your data file. When it is a lot smaller than usual, this could be caused by connection loss. When using EET with TPL and data is saved in Tobii Pro Lab, it is advised to shortly inspect the recording in Tobii Pro Lab after data collection. Of course, it is not necessary to view the whole recording, but a few parts would be advised.