Psychtoolbox data

This folder contains Psychtoolbox data for all participants.Each .mat file contains three structure data as follows:'cfg' structure is the configuration of the experiment presentation.'Para' structure contains all parameters for the study. The field SentMat is the sentence matrix that is shown to the participant. The field CondMat is the condition matrix, the first column is the position of the target word (also the flickering word) in a given sentence; the second column is the condition index for a given sentence: 1--low lexical frequency target, 2--high lexical frequency target. The field FixDuration is the duration of cross-fixation in the baseline period, in seconds.'Result' structure is the output from Psychtoolbox. The fields FixationON, StartBoxON, SentenceON, and ITION are the time points when triggers 1, 2, 4, and 16 are sent to both the MEG and EyeLink systems. Those triggers can be used to align the clocks in the experiment presentation computer, the MEG data acquisition computer, and the EyeLink computer. The fields RT and CORR are the reaction time (unit in seconds) and accuracy of the responses to the comprehension question (please note that only 12% of the sentences were followed by a question). The field WordLocation contains the coordinates for all the words that are presented on the screen -- [x_start, y_start, x_end, y_end], unit in pixels. Please note that we used the rapid mode of the PROPixx projector, where the coordinates here are just half of the coordinates on the participant's screen (also the Eyelink coordinate). Thus, please multiply these coordinates by 2 when you locate eye movement samples to a given word.