Lateral Dominance in Arm Positioning Movements

Lateral differences in arm positioning movements were examined for 15right-handed male students with a short-term memory paradigm. When the subjects used the same arm for both standard and reproduction movements, no lateral difference was found. When the subjects used the different arms for standard and reproduction movements, significant lateral differences were found with the left arm performance being superior to the right. These results can be satisfactorily explained in terms of Haude et al. (1987) model of interhemispheric transfer