E-Prime extension for Tobii Eye tracker T60

[Ali]

Hi All,

Actually i am performing gaze study using Tobii T60 eye tracker and the experiment i designed in E-prime 2.0(Registered). Now the ambiguity that i am facing is integrating both i.e. E-Prime and Tobii and have few queries.

1- Do i need to buy 'E-Prime extension for Tobii' ? 

2- Can i download extension  for free by using same credentials that i have for E-prime?

3- Can i do the study without using extension if yes then what method should i adopt?

4- Running both E-prime and Tobii studio on same computer is feasible or not ?

Looking for your worthy comments .

Regards,

Ali -阿里

[saup...@gmail.com]

Hi Ali,

you need to provide a little bit more detail of what you would like to do in your study. If the study design is rather simple, you might be able to just use Tobii Studio to set up and run your experiment. In this case, you wouldn't have to purchase anything.

But if you want to  integrate E-Prime with a Tobii eye tracker, you need to purchase the Tobii extensions from PST, as far as I know. However, maybe other people would know work-arounds.

Best,
Sebastian

[David McFarlane]

Ali,

Disclaimer: I have never used E-Prime Extension for Tobii.
Nevertheless ...

If the Extension is nothing more than an E-Prime Package File that does
not require any custom .dll files, etc., then in principle it does
nothing that you could not do yourself directly in E-Prime. In that
case, then, in principle a highly skilled E-Prime programmer could do
without the Extension. Whether that is practical remains a judgment for
each E-Prime + Tobii user to make themselves.

Does anyone know if EET is just a Package File, or if it installs other
.dll files, etc.?

Just my $.02,
-- David McFarlane

On 2016-10-17 6:03 AM, saup...@gmail.com wrote:
> Hi Ali,
>
> you need to provide a little bit more detail of what you would like to do
> in your study. If the study design is rather simple, you might be able to
> just use Tobii Studio to set up and run your experiment. In this case, you
> wouldn't have to purchase anything.
>
> But if you want to integrate E-Prime with a Tobii eye tracker, you need to

> purchase the Tobii extensions <https://www.pstnet.com/software.cfm?ID=100>

[Ali]

Hi,

Actually the study is quite simple, like after every event/change in event in E-Prime i need to a send trigger to eye tracker so that later on i would have to create segments of video,recorded by eye tracker, against each event in E-prime and i will analyze those segments one by one.

Triggers like, 'start_recording , stop_recording , user_response_1 , user_response_2 . .. .etc , end_of_stimuli_1  . .  '

Regards,

Ali

[Ali]

I guess the extension is a complete toolkit using which i can have full control  of Trobii tracker and manipulate when to start/stop recording,how to segment  recording of experiment into to small chunks   based on events in E-prime etc . .. 

here is the link to elaborate how EET looks like.

https://www.youtube.com/watch?v=-Vt1Utgf3og

Looking forward to your further "$ .02" :p

Regards,

Ali

[Ines Anton-Mendez]

The extension for Tobii allows you to integrate the recording of eye movs with the experimental design – as you say, specify when to start recording, which areas of interest in your stimulus to include in the output, etc. It also means that the gaze data file can be programmed to contain E-Prime specific information such as RT, response accuracy, etc.

It seems to me you should be able to align independent output files (Tobii gaze, and E-Prime) if you work without the extension, and then work with the gaze coordinates to figure out what was happening at certain points in the experiment in the areas of interest. It will probably be a lot of work, though...

 

    Inés

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[Ali]

Yeah , i thought about that solution of segmenting output of tracker manually by comparing it with E-prime data  and analyze but it would be hell lot of work. Lets see either anyone else have more effective solution.

Thanks,

Ali

[David McFarlane]

Ali,

Took me this long to get around to looking at that video, and it reveals
something critical. You start by adding a TobiiEyeTracker Device to
your experiment. That means that, besides adding a PackageFile, EET
also adds a Device to E-Prime. Moreover, the Tobii communicates over an
IP connection. Adding a Device is not something that you could code
yourself in stock E-Prime, and although you might find some way to use
the Tobii directly via a Socket Device, that would take some mighty
work. (For comparison, the EyeLink eyetracker also communicates over an
IP connection, but in this case you use E-Prime inline code to directly
call functions from a .dll file supplied by SR Research.)

So I revise my earlier answer, it really does look like you need to get
the EET if you want to handle Tobii directly from E-Prime, unless
somebody else knows something that I don't.

-- David McFarlane