Parameter | Meaning | Phase |
---|---|---|
IAV | Integral of the magnitude of the acceleration vector: it represents a value correlated to the energy expenditure (m/s) | RG, AG |
Vpeak | Maximum value of the amplitude of the peak velocity (m/s) calculated from the integration of the magnitude acceleration vector | RG, AG |
T_Vpeak | Time of peak velocity: it is the time instant corresponding to the peak velocity (s) | RG, AG |
T_decel | Deceleration time: it is the duration of the deceleration phase (s) | RG, AG |
Decel% | Deceleration time (%): it represents the percentage of the deceleration phase compared to the total execution time | RG, AG |
T_exec | Execution time: it represents the time spent to perform the movement (s) | RG, AG |
T_react | Reaction time: it is the time elapsed from the start acoustic input to the beginning of the movement (s) | RG |
Index_exc | Amplitude of maximum index finger excursion: it indicates the angular excursion of the index finger during the grasping of the object (deg). It is a measure related to the hand opening but estimated by using the index finger | RG |
T_index_exc | Time of maximum index finger excursion: it is the time instant corresponding to the maximum excursion of the index finger during the grasping action (s) | RG |
Skew | Skewness: it is a measure of the asymmetry of the distribution. It is calculated from the magnitude of the acceleration vector | RG, AG |
Kurt | Kurtosis: it is a measure of the shape of the tail of the distribution. It is calculated from the magnitude of the acceleration vector | RG, AG |
rmseJerk | Root mean square of the jerk, that is the rate of change of the acceleration: it represents the smoothness of the movement (m/s3) | RG, AG |