Research Center of Neurology Attribution Yes Institute of Higher Nervous Activity and Neurophysiology NITRC A Multiple Session Dataset of NIRS Recordings From Stroke Patients Controlling Brain–Computer Interface MATLAB We provide the experimental records, optodes placement data, online BCI performance, and a MATLAB code for simple analysis of hemodynamic response. Each filename includes subject ID, day and session number. The file contains a tabulated configuration of the channels (source–detector pairs in the 10–10 system), the raw light intensity data for each channel on both wavelengths, HbO and HbR concentrations in mmol/l, labels of mental tasks for each time point, and a confusion matrix of online classification. Details: Associated publication: https://doi.org/10.1038/s41597-024-04012-6 MATLAB format Stimuli type: imagined hand movements 15 stroke patients 7-24 sessions with online classification and visual feedback for each patient, 237 sessions in total Session duration: 9 or 14 mins 50 hours of recordings in total 14 sources 8 detectors 28 channels on each wavelength, 56 in total Sample Rate: 15.6 Hz Wavelengths: 760/850 nm Acquisition System: NIRScout 2024-3-30 A Multiple Session Dataset of NIRS Recordings From Stroke Patients Controlling Brain–Computer Interface A Multiple Session Dataset of NIRS Recordings From Stroke Patients Controlling Brain–Computer Interface Data, Optical Imaging, Attribution, MATLAB http://www.nitrc.org/projects/nirs_stroke/