This study describes the relationship between the recognition of shape and the electromyogram(EMG)generated on the surface of the human hand. Three spectral peaks(100, 160, and 250 Hz)were obtained after grasping each shape(sphere, tetrahedron, and cube). Peaks in the EMG spectra were identical in frequency for each shape. Feature extraction of different forms could not therefore be quantified as spectral variation in the EMG.