About tes-1
Summary.
The data set contains the voltage magnitudes at intracranial electrodes induced by transcranial electrical stimulation (tES). It is derived from the in vivo electrocorticography (ECoG) recordings of electrical potential on human subjects when weak alternating current (smaller than 2 mA) is applied transcranially from the scalp surface. 14 individuals are recorded with 1846 intracranial electrodes in total covering most cortical regions and some deep brain areas. They have been used to calibrate and validate our tES models, which is published in the paper below. We hope these data can also be used in the future to facilitate the validation of newly developed modeling approaches for the study of tES.
To help other researchers replicate our results on model validation and calibration, we also made available the head model (tissue segmentations), the MNI and voxel coordinates of the intracranial recording electrodes, as well as the magnetic resonance image (MRI) of each subject.
Note that the raw ECoG recordings are not included in this data set. The voltage values in this data set are estimated by fitting a sinusoid to the recordings at each intracranial electrode. They are therefore the electrical potentials in the brain induced by the stimulation, not the spontaneous brain activities. For more details on the data acquisition and pre-processing, please refer to the following paper:
Format of the data.
The voltage recordings are stored in text file for each subject that can be loaded into Matlab. The MRI are stored as NIFTI format, and can be easily opened by free software MRIcro. Details of the formats are in the given in the data description document, linked to at the bottom of this page. Total size of the data is about 44 MB (compressed)
How to download the data.
The data must be downloaded from:
https://portal.nersc.gov/project/crcns/download/tes-1
A CRCNS.org account is required. This link allows bulk downloading of multiple files using the download script as described in the "Alternative download method" section on the download page.
Getting help using the data.
If you have questions about using the data, post them on the forum for using data sets.
How to cite the data
If you publish any work using the data, please cite the publications above, as well as the dataset itself:
Y. Huang, A. Liu, B. Lafon, D. Friedman, M. Dayan, X. Wang, M. Bikson, W. K. Doyle, O. Devinsky, L. Parra (2016); Recordings of electrical potentials in the in vivo human brain induced by transcranial electrical stimulation. CRCNS.org
http://dx.doi.org/10.6080/K0XW4GQ1
The above citation uses a Digital Object Identifier (DOI) which is assigned to the data set. The DOI was created using DataCite (www.datacite.org) and the California Digital Library, "EZID" system (n2t.net/ezid/).
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