This document guides through the data repository of the paper “Eyes still Move when the Mind Is Blind: Content-Related Eye Movements During Mental Imagery in Aphantasia” by Enea J. Weber and Lilla M. Gurtner (shared first authorship), and Fred W. Mast, 2024.

The folders in this repository contain files with raw-data, stimuli and analysis files. A graphical overview over the entire repository is in “overview_files.png”.

To replicate the analysis/results, run first Data_preparation.Rmd (with a look into CheckEyeData.qmd if you are curious) and then run MS_4_submission.Rmd. In each .Rmd file, you need to first set the path correctly to the directory where you downloaded this folder. The rest of the scripts should only contain relative paths.

If you want to re-fit all models (will take some time, depending on your computer!), you have to delete or move all .rds-files in the sub-folders of processed_data/models/. If you don’t do this, MS_4_submission.Rmd will load the models and not refit them.

top-level directory

¦–CheckEyeData.qmd - script to illustrate individual scan paths

¦–Collab_Enea.Rproj - Rproject in which the analysis was run

¦–Data_preparation.Rmd - script to prepare the raw-data into analyzable sets

¦–figs - figures

¦–Figures - more figures

¦–import_old_filter_data.m - Matlab script to import fixation data for calculating rqa values with runRQA_corrected.m

¦–MS_4_submission.Rmd - all analysis and plotting for the submitted manuscript

¦–overview_files.png - illustration of directory structure

¦–processed_data - folder with processed data

¦–r-references.bib - references

¦–raw_data - folder with raw data

¦–READ_ME.html - knitted version of the read-me file

¦–READ_ME.Rmd

¦–Recurrence_heatmaps - folder with code to generate recurrence heat-maps

¦–runRQA_corrected.m - Matlab script calculate rqa-values from fixation data, used in “Data_preparation.Rmd”

¦–stimuli - stimuli used in the experiment

¦–Supplementary_Material.pdf - supplementary material script

°–Supplementary_Material.Rmd - supplementary material script

processed_data

¦– behav_data - folder containing old-new recognition data and details/occlusion-data

¦– eye - folder containing filtered fixation, RQA data and data about the rating of individual pictures’ vividness

°– models - folder with models for all analysis reported in the main article or supplementary material

raw_data

¦–demographics - folder containing demographic information on participants with aphantasia and VVIQ-1-item-level responses

¦–details - folder with sub-folders for participants with aphantasia and control participants containing the raw details/occlusion-task results (psycho-py output files)

¦–fixation_data - folder with raw fixation report directly from the eye tracker

°–old_new_recognition_data - folder with sub-folders for participants with aphantasia and control participants containing the raw recognition results (psycho-py output files)

stimuli

Sub-folders contain the stimuli used for the two behavioural tasks (details /occlusion task and old-new recognition task)

¦–occlusion_stimuli

°–old_new_recognition_stimuli

Session Info

R environment session info for reproducibility of results

R platform information
Setting Value
version R version 4.3.2 (2023-10-31)
os macOS Ventura 13.4.1
system x86_64, darwin20
ui X11
language (EN)
collate en_US.UTF-8
ctype en_US.UTF-8
tz Europe/Rome
date 2024-12-17
pandoc 3.1.1 @ /Applications/RStudio.app/Contents/Resources/app/quarto/bin/tools/ (via rmarkdown)
packages used
Package Loaded version Date
devtools 2.4.5 2022-10-11
dplyr 1.1.4 2023-11-17
forcats 1.0.0 2023-01-29
ggplot2 3.5.0 2024-02-23
kableExtra 1.4.0 2024-01-24
lubridate 1.9.3 2023-09-27
purrr 1.0.2 2023-08-10
readr 2.1.5 2024-01-10
stringr 1.5.1 2023-11-14
tibble 3.2.1 2023-03-20
tidyr 1.3.1 2024-01-24
tidyverse 2.0.0 2023-02-22
usethis 2.2.3 2024-02-19

Contributor information:

  • Name: Lilla M. Gurtner
    • Role/Function: Postdoc, investigator, data creator, data submitter
    • Institution: Centre for Development and Environment
    • Address: Mittelstrasse 45 - 3012 Bern
    • Email:
  • Name: Enea Weber
    • Role/Function: PhD candidate, investigator, data creator
    • Institution: Department for Cognitive Psychology, Perception and Research Methods
    • Address: Fabrikstrasse 8 - 3012 Bern
    • Email:
  • Name: Fred W Mast
    • Role/Function: supervisor
    • Institution: Department for Cognitive Psychology, Perception and Research Methods
    • Address: Fabrikstrasse 8 - 3012 Bern
    • Email:

Date of data collection:

Aphantasic individuals: approx. October 2021 - July 2022 Control individuals: approx. 2017-2018

Geographic location of data collection:

Lab at the Fabrikstrasse 8, Unversity of Bern

Keywords:

Eye movements, Looking at nothing effect, Aphantasia, mental representations, mental imagery, recurrence quantification analysis

Information about funding sources that supported the collection of the data:

Funding agency name: For work of Enea Weber: SNF Grant number:100014_214940

Licence

The data set underlyies the cc-by licence. Please cite as follows: Gurtner, Weber & Mast. 2024. Eye movements during mental imagery in aphantasic and control individuals.