gridsearch_parkinsons

Cite as:

Meder, B., Sterf, M. Wu, C.M, & Guggenmos, M. (2025). Dopamine depletion in Parkinson’s increases directed but not random exploration. PsyArXiv

Preprint:

https://osf.io/preprints/psyarxiv/y2buv_v1

Folders

• data: stores various data files
• data/raw_data: contains the .json files generated by the experimental software, one file per participant.
• brm: precomputed Bayesian regression analyses
• img: Task and model visualizations
• modelResults: results of different computational models
• plots: plots generated for article
• levodopa: medication info

Datasets:

• data/behavioralData.csv: behavioral data of all participants
• data/modelFit.csv: parameter estimates of all computational models for all participants
• data/roughKernel.json: all 40 environments, from which a new environment was chosen in each round without replacement. Also used for computational analyses.
• gridsearch_parkinson.bib: BibTex bibliography, used by .qmd files

Scripts:

• gridsearch_parkinsons.Rproj: R Studio project file
• gridsearch_parkinsons.qmd: Quarto document with R code used for the statistical and computational analyses. Also generates article figures.
• gridsearch_parkinsons.html: Rendered Quarto document with R code used for the statistical and computational analyses. Also includes article figures.
• dataProcessing.R: import and pre-process behavioral data and parameter estimates (added for completeness; analysis scripts load the generated .csv files sitting in data).
• statisticalTests.R various wrapper functions for statistical tests used for the analyses.
• simulateModels.R: simulate the GP-UCB model with different parameter combinations and plot expected rewards.
• simulate_consecutive_choices.R: simulate consecutive search distances for learner choosing randomly on each step.