___________________________________________________________________________________________________________________ PARAFOVEAL STIMULUS PRESENTATION* ___________________________________________________________________________________________________________________ Script Author: Sean Draine, Ph.D. (seandr@millisecond.com) for Millisecond Software, LLC last updated: 03-02-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Script Copyright © 03-02-2022 Millisecond Software ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This script demonstrates a task in which subjects attempt to identify words presented peripherally as they stare at a fixation point in the center of the screen. The eye tracker is used to ensure subjects are looking at the fixation point for 250ms when the target word is presented. ___________________________________________________________________________________________________________________ TASK DESCRIPTION ___________________________________________________________________________________________________________________ Participants are presented subliminal words for 1 vertical refreshate (~17ms on 60Hz monitor) and are asked to type them into a textbox. ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 5 minutes to complete ___________________________________________________________________________________________________________________ DATA FILE INFORMATION ___________________________________________________________________________________________________________________ The default data stored in the data files are: (1) generic Inquisit raw data file: 'parafoveal_raw*.iqdat' (2) Summary data file: 'parafoveal_summary*.iqdat' (a separate file for each participant) inquisit.version: Inquisit version run computer.platform: the platform the script was run on (win/mac/ios/android) startdate: date script was run starttime: time script was started subjectid: assigned subject id number groupid: assigned group id number sessionid: assigned session id number elapsedtime: time it took to run script (in ms); measured from onset to offset of script completed: 0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run) ___________________________________________________________________________________________________________________ EXPERIMENTAL SET-UP ___________________________________________________________________________________________________________________ 1 Block of 50 trials: a) Fixation Point for at least 250ms (once participants focus on fixation point after 250ms, the trial continues) b) Word Presentation for 1 vertical refreshrate (on 60Hz monitor: ~17ms); then openended textbox ___________________________________________________________________________________________________________________ STIMULI ___________________________________________________________________________________________________________________ see section Editable Stimuli ___________________________________________________________________________________________________________________ INSTRUCTIONS ___________________________________________________________________________________________________________________ see section Editable Instructions ___________________________________________________________________________________________________________________ EDITABLE CODE ___________________________________________________________________________________________________________________ check below for (relatively) easily editable parameters, stimuli, instructions etc. Keep in mind that you can use this script as a template and therefore always "mess" with the entire code to further customize your experiment.