These directories contain the code (and on gin the associated data; available upon request) for the (pre-)processing of the multimodal data of the StateSwitch study. Please cite the following references if you use these scripts: Kosciessa, J. Q., Lindenberger, U. & Garrett, D. D. Thalamocortical excitability modulation guides human perception under uncertainty. Nat. Commun. 12, 2430 (2021). Kosciessa, J. Q., Mayr, U., Lindenberger, U. & Garrett, D. D. Broadscale dampening of uncertainty adjustment in the aging brain. Nat. Commun. (in press, 2024). Note: The code and data are shared as nested DataLad datasets. These provide the most flexible and efficient access (recommended). The archive attached to this database record provides a snapshot in December 2024, please note that repositories may have been updated since then. The public copy is hosted on https://git.mpib-berlin.mpg.de/LNDG/stateswitchage/stsw and provides access to code and tools. The gin sibling (https://gin.g-node.org/StateSwitch/stsw) contains the annexed (pre-)processed data. These are available upon request from kosciessa@mpib-berlin.mpg.de. Please note that content of subdatasets (i.e., subfolders) may be subject to alternative licenses.