Behaviour + EEG analyses for two related studies on imagined movement accuracy (that is, do we make "errors" during motor imagery?), and how scalp‑level dynamics reflect those processes.

Left: Behavioural task. Right: EEG results — work in progress; plotting cleanup pending.

At a glance:

• Behaviour (Published): Participants performed (overtly or imagined) a complex motor task designed to challenge motor acuity. Results support notion of motor imagery accuracy; similarly affected by drivers of overt movement error.
• EEG: Approach: task‑locked theta/alpha/beta dynamics modeled with hierarchical GAMs (mgcv); contrasts via difference‑of‑smooths; confirmatory cluster‑based permutation inference. Results interpretation pending (manuscript in prep).

• /_Scripts/ — all analysis code (behaviour + EEG).
  Convention: scripts 00–03 = Behaviour paper; scripts 04+ = EEG paper.
• /external/ — EEG preprocessing pipeline (git submodule, pinned to a specific commit).
• /legacy/ — dissertation‑era code (read‑only).
• /media/ — curated figures displayed here (bulk plot dumps are ignored).
• /_Data/ — local‑only; only _Data/eeg/BESA-81.csv (channel map) is tracked.
• renv.lock, .Rprofile — reproducible R environment via renv.

• Behavioural:
  • Behavioural task: single-session touchscreen path-tracing with imagery and overt execution, repeated vs random shapes, varying complexity and stimulus durations.
  • Metrics: overt error = DTW-aligned mean Euclidean deviation; performance = z(speed/error); imagery expected performance obtained by fitting a hierarchical model to overt trials and projecting to imagery.
  • Modelling: Bayesian multilevel regressions (participant random effects; standardized predictors, weakly informative priors) tested self-reported accuracy ~ expected/actual performance with condition interactions; secondary models examined movement time ~ condition × stimulus-time × complexity.
• EEG: (WIP); manuscript in prep. See scripts under /_Scripts/.

• Behaviour:

Ingram, T. G. J., Hurst, A. J., Solomon, J. P., Stratas, A., & Boe, S. G. (2022). Imagined movement accuracy is strongly associated with drivers of overt movement error and weakly associated with imagery vividness. Journal of Experimental Psychology: Human Perception and Performance, 48(12), 1362–1372. https://doi.org/10.1037/xhp0001064

• EEG: (WIP); manuscript in prep. See scripts under /_Scripts/.

git clone --recurse-submodules https://github.com/toniolio/DEMI.git
cd DEMI

R -q -e 'install.packages("renv", repos="https://cloud.r-project.org"); renv::restore(); renv::status()'

cd external/DEMI_EEG_Pipeline
git fetch origin
git checkout <new-commit-or-tag>
cd ../..
git add external/DEMI_EEG_Pipeline
git commit -m "external: bump EEG pipeline to <sha|tag>"

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• Use GitHub’s Cite this repository button (powered by this repo’s CITATION.cff) to export BibTeX/APA/EndNote.
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Code in this repository is released under the MIT License. See LICENSE.