A note on time-frequency analysis of finger tapping.
Finger tapping involves 3 important features: time, spatial amplitude, and frequency. In classical analysis, investigators examine timing parameters; in spectral analysis, they examine frequency parameters. Both types of analysis are based on stationary tap information. The authors propose that time-frequency analysis is a useful tool for analyzing nonstationary finger tapping. They describe the method and give examples of frequency modulation, age difference, and speed transition that demonstrate additional insights one can gain by using this analysis.
Liu
Wei
W
Department of Physical Therapy and Rehabilitation Science, School of Medicine, University of Maryland, 100 Penn Street, Baltimore, MD 21201, USA. wliu@som.umaryland.edu
Forrester
Larry
L
Whitall
Jill
J
D001696:Biomechanical Phenomena; D005385:Fingers / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D009048:Motor Skills / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D010507:Periodicity; D013647:Task Performance and Analysis