E-prime Extensions for Net Statoin and tobii

[Scott Huberty]

Has anyone successfully set up E-prime Extensions for Net Station and Tobii, and simultaneously collected EEG and Eye-tracking data?

If so, what version of Netstation and Eprime are you using, and what does your set up look like? Are Tobii and E-prime on the same PC or separate PC's? Are you using a splitter to display to experimenter and participant monitors, or dual view or clone set up? Our set up is in the picture attached

I tested one of our systems  to collect both EEG and ET data, but it started causing timing issues for Net Station stimuli offsets. The issue for us is, that EET will only collect gaze data if the Experimenter and Participant Monitors are set up with a DVI splitter. a DVI splitter is plugged into the Eprime PC DVI output port, and then outputs DVI signal to the experimenter monitor and participant monitor via 2 DVI cables. For some reason this is causing Stimuli offset issues. Basically, there is a wide range of in our stimuli offsets, for any of you familiar with EEG.

EGI (Net Station) suggests using clone mode to display video to the experimenter and participant monitors. Basically, one DVI cord is plugged into DVI output 1 port of the Eprime computer, and in the input of the experimenter monitor. A second DVI cable is plugged into the DVI output 2 port of the EPrime Computer, and is plugged into the DVI input of the participant monitor. This will get us consistent stimuli offsets between Eprime and Net Station, but EET will not collect gaze data using this setup because it is confused by the 2 separate DVI connections. Because using clone mode, there are 2 recognized monitors, EET does not know which Monitor is the Eye tracking monitor.  

So long story short, I'm basically just wondering if anyone has successfully set up both EET and EENS, and simultaneously collected EEG and Eye-tracking data. 

Our set up looks like this. I'd suggest looking at the set-up picture I attached, and using the text below as support for minor details:  

Net Station version 4.5.7

E-prime Version 2.0.8.90

E-prime Extensoins for Net station 2.0.0.88

E-prime Extensions For Tobii 2.0.1.26

E-prime PC: Dell Optiplex 780; Windows XP

Tobii Eye Tracking Software PC: WIndows XP, Tobii Studio 2.0

Ethernet Cables connect Tobii, Eprime, and Net Station Computers

Tobii PC: Clone Mode. One DVI goes to Experimenter monitor. One DVI goes to DVI switch.

E-prime PC: One DVI cable connects to the input of a Tripp LIte DVI Splitter. The DVI Splitter has two DVI outputs. One Output DVI cord goes to E-prime Experimenter monitor. the second Output DVI cord goes to the DVI Switch.

DVI switch output connects to the participant monitor. this way we can control whether the participant sees the Tobii PC or the E-prime PC. When running E-prime experiments, the participant sees the Eprime PC, when running purely Tobii experiments, the participant sees the Tobii PC.

Thanks,

Scott

[saup...@gmail.com]

Hi Scott,

we have been able to use a Tobii TX300 together with NetStation on E-Prime. However, we didn't use an experimenter monitor because that was not necessary for our setup. The eyetracking data are just recorded into a gazedata file and from the fixation coordinates in every sample we can determine which area of interest was looked at.

In our setup, the Tobii is the external screen that E-Prime presents the stimuli on and the Tobii sends its data directly to the E-Prime computer via Ethernet (Ethernet-to-USB adapter). Since its difficult to add all triggers to the gazedata file directly, we have an InLine script that writes them into a text file and we merge them with the gazedata later. In this way we have the same triggers with the same timing for both eyetracking and EEG data.

I hope that helps.