DOI: 10.6084/m9.figshare.5488687
title: eye analysis hdf5

description: Gaze data HDF5<br>The gaze data recorded by the Eyelink 1000 are stored in a file named group_level.hdf5 file, which can be found at https://figshare.com/articles/prf_fit_and_mapper_glm_results/5488276.This file contains a separate subfield for each experimental run. Within these fields, are the following subfields.The raw gaze data is stored in a subfield called 'block_0' (the 'block' subfield is redundant). Withink block_0, the relevant data is stored in 'block_0_values'. The subfield 'block0_items' provides the column names.In the remaining subfields, the column names are provided in the hdf5:blinks_from_message_file. This subfield contains the blinks detected by the Eyelink software.buttons. This subfield contains buttons pressed in timestamps relative to the experiment (exp_timestamp) and in eyelink time (EL_timestamp)fixation_from_message_file. This subfield contains the fixations detected by the Eyelink software.mapper_transients: empty fieldparameters: these are the trial specific parameters from the experiment (trial refers to single bar pass)BY_color: refers to the subject specific BY to RG gainBY_comparison_color: used by the color matcher procedure to determine subject specific relative color gainsPRF_ITI_in_TR: time between two bar passes in TRPRF_period_in_TR: bar pass duration in TRRG_color: baseline color to which the BY color is determined using the BY_color ratioTR: duration in sbar_width_ratio: ratio of bar width to stimulus diameterelement_size: individual Gabor width in pixelselement_spatial_frequency: Gabor spatial frequency in pixelsfast_speed: temporal frequency of fast moving Gabors in Hzmapper_ITI_in_TR: time between two mapper stimuli (i.e. full-field colors vs temporal frequency experiment)minimum_pulse_gap: minimum of exponential distribution (in s) that determines a transient change within a certain stimulus dimension (i.e. color / temporal frequency / fixation)num_elements: number of Gabor elements that made up the bar stimulusnum_fns_trials: number of 'fix no stim' trials: empty trials with fixation (i.e. no bar). A trial here refers to a full bar pass.num_trials: refers to number of Feature Mapper trials per stimulus dimension (i.e. color / tf)orientation: bar movement direction in radiansredraws_per_TR: number of updates per TR of Gabor position within the bar, Gabor spatial frequency, and Gabor color and temporal frequencyslow_speed: temporal frequency of slow moving Gabors in Hzstim_size: relative to screen heighttask_index: the dimension to attend (0:TF,1:Color,2:Fix,3:Fix_no_stim)task_rate: refers to mean of exponential distribution (in s) that determines a transient change within a certain stimulus dimension (i.e. color / temporal frequency / fixation)saccades_from_message_file: This subfield contains the saccades detected by the Eyelink software.sounds: empty subfieldtransients: changes within a certain stimulus dimension.transient_type: 0:TF,1:Color,2:Fixecc_bin: bar stimulus ecc binphase: 0-1 runs from start to end of bar sweepvalue: staircase value used by experiment to determine stimulus intensitytrial_phases: progression of trial phasestrial_phase_trial: trial numbertrial_phase_index: 0=instruction only present during first trial, 1=1s delay, 2= wait for TR, 3=bar sweep, 4=ITItrial_start_exp_timestamp: overview of timing of each trial