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📤EyeLink Data Export Procedure

Follow these steps for each [task]

Transfer to Hard Drive

The .edf files are on SharePoint

Engle Lab - Documents / Data Collection / [Study Name] / data / pupil / raw / [task] / edf

In order to export them to .txt files we will first need to transfer them to the Lab Backup Hard Drive connected to the left Control Room computer. They need to be transferred to:

E: Lab Backup / [Study Name] / [Task] / edf

Import in Data Viewer

  1. Navigate to the raw eye tracker data folder on the Lab Backup Hard Drive

E: Lab Backup / [Study Name] / [Task]

  1. Open the file [task]_eyetracker.evs

  2. In Data Viewer go to File -> Import Data … -> Multiple EyeLink Data Files …

  1. Click on the … button to choose the location of files to import

E: Lab Backup / [Study Name] / [Task] / edf

  1. Double click the “edf” folder

  2. Click on the Open button

  3. Click on the Select All button and then the Import button

  4. It will ask you if you want to replace already imported data files.

    • Select the Apply to All option

    • Select Skip, Don’t Import This File button

  5. Wait until all data files are imported … ⏳

Export to .txt

  1. Export a sample report text file by going to: Analysis -> Reports -> Sample Report …

  1. Check to make sure the following variables are in Selected Variables (be aware that not all of these will be available for rest task):

Variable List

  • RECORDING_SESSION_LABEL

  • TRIAL_INDEX

  • TIMESTAMP

  • SAMPLE_MESSAGE

  • LEFT_PUPIL_SIZE

  • LEFT_GAZE_X

  • LEFT_GAZE_Y

  • LEFT_FIX_INDEX

  • LEFT_IN_SACCADE

  • LEFT_IN_BLINK

  • TR_Sync_Block_Start_DisplayTime

**Everything below will not be present in the rest task

  • blocknum

  • trial_number

  • trial_identifier

  • ACC

  • RT

  1. Select the Create one Report File per EDF File option

  2. Click on Next and choose OK to save changes and wait... ⏳

  3. A finder winder box will pop up.

    • In the File name box type: [task]_eyetracker (e.g., 1back_eyetracker)

    • In Files of type: select Text (Tab-Delimited) (*.txt)

    • Click Save

  4. Wait for it to export the edf files to .txt … ⏳

    • The files will be saved in the Output folder

  5. Copy the files to SharePoint at:

Engle Lab - Documents / Data Collection / [Study Name] / data / pupil / raw / [task]

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