Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Supported by

Eye-tracking - Start/stop recording on a trial basis or record the whole experiment?

Hi,
I'm both new to eye-tracking and to OpenSesame/PyGaze;
I've been looking into these tools for a few weeks now and at this point I have quite a few questions.
I'll start a few new discussions with some of these questions;
My apologies in advance if some of the questions are not very pertinent or if they are already answered elsewhere.
Any help will be much appreciated! Thanks! :smile:

Regarding the current topic,
The eye-tracking template in OpenSesame starts and stops the recording of eye-tracking data once per trial; this is consistent with the PyGaze example scripts I found.
Other tools, such as Tobii Studio (I'm using a Tobii eye-tracker) seem to record the experiment continuously from start to finish.

  1. Is it somehow ill-advised to use pygaze_start_recording/pygaze_stop_recording outside the scope of a trial, to effectively record the whole experiment continuously?

  2. How would that relate to the need use pygaze_drift_correct?

  3. Would that bring about any complications regarding the data analysis (I'll be looking into PyGaze Analyser and eyetrackingR for that).

The obvious downside of recording the whole experiment is generating more useless data; on the other hand, looking at the eye-tracking data, it seems that each time the eye-tracker starts recording there is a period of about 500 ms in which the tracking is not successful.

My congratulations and gratitude to Sebastiaan Mathôt and all the contributors to OpenSesame! It seems to be an amazing tool!

Best regards,
Bruno

Comments

  • Hi Bruno,

    Is it somehow ill-advised to use pygaze_start_recording/pygaze_stop_recording outside the scope of a trial, to effectively record the whole experiment continuously?

    No, you can do that as well. This is more a way to indicate the trial-based structure (if any) of the experiment for later analysis.

    How would that relate to the need use pygaze_drift_correct?

    The EyeLink cannot perform drift correction while recording. However, this may be different for other eye trackers, and I don't know in the case of a Tobii. I don't even know if the Tobii actually does drift correction. @Edwin?

    But if the pygaze_drift_correct item throws an error, you will notice!

    Would that bring about any complications regarding the data analysis (I'll be looking into PyGaze Analyser and eyetrackingR for that).

    That's a good question to ask yourself, because the way you set up your experiment can indeed make the analysis much easier or harder. But it's not a question that has a generally applicable answer.

    I would first decide how you want to analyze your data, and look at the assumptions that this analysis procedure makes: how do you expect the data to be structured? How do you expect variables to be logged? Which messages do you expect? And then design your experiment with that in mind.

    Cheers!
    Sebastiaan

    Buy Me A Coffee

  • Hi Sebastiaan,

    Thank you for your reply and for the OpenSesame tool! :smile:

Sign In or Register to comment.

agen judi bola , sportbook, casino, togel, number game, singapore, tangkas, basket, slot, poker, dominoqq, agen bola. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 50.000 ,- bonus cashback hingga 10% , diskon togel hingga 66% bisa bermain di android dan IOS kapanpun dan dimana pun. poker , bandarq , aduq, domino qq , dominobet. Semua permainan bisa dimainkan hanya dengan 1 ID. minimal deposit 10.000 ,- bonus turnover 0.5% dan bonus referral 20%. Bonus - bonus yang dihadirkan bisa terbilang cukup tinggi dan memuaskan, anda hanya perlu memasang pada situs yang memberikan bursa pasaran terbaik yaitu http://45.77.173.118/ Bola168. Situs penyedia segala jenis permainan poker online kini semakin banyak ditemukan di Internet, salah satunya TahunQQ merupakan situs Agen Judi Domino66 Dan BandarQ Terpercaya yang mampu memberikan banyak provit bagi bettornya. Permainan Yang Di Sediakan Dewi365 Juga sangat banyak Dan menarik dan Peluang untuk memenangkan Taruhan Judi online ini juga sangat mudah . Mainkan Segera Taruhan Sportbook anda bersama Agen Judi Bola Bersama Dewi365 Kemenangan Anda Berapa pun akan Terbayarkan. Tersedia 9 macam permainan seru yang bisa kamu mainkan hanya di dalam 1 ID saja. Permainan seru yang tersedia seperti Poker, Domino QQ Dan juga BandarQ Online. Semuanya tersedia lengkap hanya di ABGQQ. Situs ABGQQ sangat mudah dimenangkan, kamu juga akan mendapatkan mega bonus dan setiap pemain berhak mendapatkan cashback mingguan. ABGQQ juga telah diakui sebagai Bandar Domino Online yang menjamin sistem FAIR PLAY disetiap permainan yang bisa dimainkan dengan deposit minimal hanya Rp.25.000. DEWI365 adalah Bandar Judi Bola Terpercaya & resmi dan terpercaya di indonesia. Situs judi bola ini menyediakan fasilitas bagi anda untuk dapat bermain memainkan permainan judi bola. Didalam situs ini memiliki berbagai permainan taruhan bola terlengkap seperti Sbobet, yang membuat DEWI365 menjadi situs judi bola terbaik dan terpercaya di Indonesia. Tentunya sebagai situs yang bertugas sebagai Bandar Poker Online pastinya akan berusaha untuk menjaga semua informasi dan keamanan yang terdapat di POKERQQ13. Kotakqq adalah situs Judi Poker Online Terpercayayang menyediakan 9 jenis permainan sakong online, dominoqq, domino99, bandarq, bandar ceme, aduq, poker online, bandar poker, balak66, perang baccarat, dan capsa susun. Dengan minimal deposit withdraw 15.000 Anda sudah bisa memainkan semua permaina pkv games di situs kami. Jackpot besar,Win rate tinggi, Fair play, PKV Games