[Assessment of handedness using finger spreading]

In 50 right handed and 50 left handed subjects we researched the phenomenon of spreading fingers. In the right hand of right-handers we found the smallest angels between fingers, in the right hand of left-handers we found the biggest angels between the spreaded fingers. The higher the dominance of the hand, the lower is the phenomenon of spreading fingers. We assumed smaller motor units at the side of dominance.