# Instructions for use #
## Behavior ##
Contains a compiled behavior file for each subject called "SN_Behavior.mat", where SN = subject number. Here are the critical variables in each file:
**beh.posBin:** the angular position of the target. 1 = 0 degrees, 2 = 45 degrees, 3 = 90 degrees, etc. values increase in the clockwise direction.
**beh.targOri:** orientation of the line in the target item.
**beh.responseOri:** the reported orientation value.
**beh.oriOffset:** the orientation response error i.e., difference between the reported orientation and the actual target orientation.
## EEG ##
Contains two files for each subject:
SN_EEG_JJF_17_5.mat is the continuous (i.e. unsegmented) eeg data for subject SN
SN_EEG_SEG_JJF_17_5.mat is the segmented eeg data for subject SN.
### Segmented files ###
Each file contains the segmented EEG data for a given subject called "SN_EEG_SEG_JJF_17_5.mat" (where SN = subject number) The important variables are:
**erp.trial.baselined:** a trial x electrodes x samples matrix of EEG data (baselined corrected).
**erp.trial.baselineCorrection:** the baseline correction (trials x electrodes) so you can undo it if you like.
**erp.trial.times:** the time points included in each trial - in ms relative to the onset of the sample stimulus.
**erp.srate:** the sampling rate (Hz).
**erp.chanLabels:** the name of the electrodes in erp.trial.baselined.
**erp.arf.artifactIndCleaned:** the index of which trials were rejected due to artifacts.
### Unsegmented files ###
Each file contains the unsegmented EEG data for a given subject called "SN_EEG_JJF_17_5.mat" (where SN = subject number) The important variables are:
**eeg.data:** an eletrodes x trials matrix of EEG data for the entire session.
**eeg.srate:** the sampling rate (Hz).
**eeg.chanLabels:** the name of the electrodes in eeg.data.
**eeg.eventCodes:** a vector of the event markers sent during the session (see task script for details).
**eeg.eventTimes:** when those events occured.
## EyeTrack ##
Contains a eye tracking data file for each subject, called SN_EYE_SEG_JJF_17_5.mat, where SN = subject number. The important variables are:
**eyeData.sRate:** the sampling rate (Hz).
**eyeData.trial.times:** the times in each trial segment (relative to stimulus onset. e.g. -300 -298 -296 ... 1248 1250 indicates that each segment starts 300 ms pre-stimulus and ends 1250 ms post-stimulus (sampling every 2 ms).
**eyeData.trial.xDeg:** horizontal distance of gaze from fixation in degrees of visual angle (trials x samples).
**eyeData.trial.yDeg:** vertical distance of gaze from fixation in degrees of visual angl (trials x samples).
## Preprocessing Scripts ##
This folder contains the scripts used to preprocess the EEG and eye tracking data (i.e., these were the scripts used to obtained the files described above).
