Table 4 Description of the fields contained within the _empatica.mat file structure.
From: Mobile Brain-Body Imaging and Visual Data of Theatrical Actors During Rehearsal and Performance
empatica.sensor_location | Identification of subject and hand where sensor is located |
|---|---|
empatica.Accel | Nx3 matrix containing acceleration vector(x,y,z) from triaxial accelerometer at |
each time point N (units: 1/64g) | |
empatica.Accel_tstamps | Nx1 vector containing unix timestamps in seconds at each time point N for acceleration data |
empatica.Accel_srate | Scalar value indicating sampling rate of accelerometer (32 Hz) |
empatica.BVP | Nx1 vector containing blood volume pulse vector from photoplethysmograph at each time point N (no units given) |
empatica.BVP_tstamps | Nx1 vector containing unix timestamps in seconds at each time point N for blood volume pulse data |
empatica.BVP_srate | Scalar value indicating sampling rate of photoplethysmograph (64 Hz) |
empatica.elec_dermal | Nx1 vector containing electrodermal activity vector from electrodermal activity sensor at each time point N (units: microsiemens) |
empatica.elec_dermal_tstamps | Nx1 vector containing unix timestamps in seconds at each time point N for electrodermal activity data |
empatica.elec_dermal_srate | Scalar value indicating sampling rate of electrodermal activity sensor (4 Hz) |
empatica.heart_rate | Nx1 vector containing heart rate vector extracted from BVP signal at each time point N |
empatica.heart_rate_tstamps | Nx1 vector containing unix timestamps in seconds at each time point N for heart rate data |
empatica.heart_rate_srate | Scalar value indicating sample rate of extracted heart rates (1 Hz) |
empatica.temperature | Nx1 vector containing temperature at each time point N (units: degrees Celsius) |
empatica.temperature_tstamps | Nx1 vector containing unix timestamps in seconds at each time point N for temperature data |
empatica.temperature_srate | Scalar value indicating sampling rate of temperature sensor (4 Hz) |
