Upper-Limb Surface EMG and Wrist Trajectory Dataset During a Drinking Task: 25 Healthy Subjects

Overview Surface electromyography (sEMG) signals were recorded from 25 healthy subjects (age: 22.5 ± 2.1 years) performing a drinking task — a high degree-of-freedom upper-limb motion used as a reference ADL in neurorehabilitation research. Each subject completed 3 trials of 25 drinking repetitions each. Additionally, 3D wrist trajectory and task phase timestamps are provided for each trial. Dataset Structure Each subject folder contains the original .mat file and the derived .csv files for all 3 trials: dataset/ └── Subject_XX/ ├── Data_XX.mat ├── Subject_XX_Trial_1_EMG.csv ├── Subject_XX_Trial_1_Phases.csv ├── Subject_XX_Trial_1_WristTrajectory.csv ├── Subject_XX_Trial_2_EMG.csv ├── Subject_XX_Trial_2_Phases.csv ├── Subject_XX_Trial_2_WristTrajectory.csv ├── Subject_XX_Trial_3_EMG.csv ├── Subject_XX_Trial_3_Phases.csv └── Subject_XX_Trial_3_WristTrajectory.csv File Descriptions Data_XX.mat MATLAB struct with the following hierarchy: Data ├── Trial_1 │ ├── EMG (14 x N double) │ ├── Labels (1 x 14 cell) │ ├── Phases (M x 8 int32) │ └── WristTrajectory (3 x K double) ├── Trial_2 │ └── ... └── Trial_3 └── ... *_EMG.csv Raw sEMG signals from 14 upper-body muscles. Sampling rate: 2000 Hz Rows: samples (N) Columns: 14 muscle channels Label Muscle FLDS Flexor Digitorum Superficialis FLCR Flexor Carpi Radialis BRAC Brachioradialis EXCR Extensor Carpi Radialis FLCU Flexor Carpi Ulnaris EXCU Extensor Carpi Ulnaris EXDC Extensor Digitorum Communis BICL Biceps Brachii (Long Head) TRIC Triceps Brachii DANT Deltoid (Anterior) DPOS Deltoid (Posterior) DMED Deltoid (Medial) TRAP Trapezius PECM Pectoralis Major *_Phases.csv Onset and offset markers for each of the 4 sub-phases of every drinking repetition. Values are EMG sample indices (at 2000 Hz). Rows: repetitions (25 per trial) Columns: 8 — alternating onset/offset for each sub-phase Column Description phase_1 Sub-phase 1 onset phase_2 Sub-phase 1 offset phase_3 Sub-phase 2 onset phase_4 Sub-phase 2 offset phase_5 Sub-phase 3 onset phase_6 Sub-phase 3 offset phase_7 Sub-phase 4 onset phase_8 Sub-phase 4 offset *_WristTrajectory.csv 3D wrist position over time. Sampling rate: 100 Hz Rows: samples (K) Columns: X, Y, Z (in mm)