Witelson's dichaptic stimulation test and children with different levels of musical talent

In a three-stage longitudinal study with children at the beginning of puberty, we found differences between male musicians and male non-musicians in Witelson's Dichaptic Stimulation Test. Data indicated a shift from right-hemisphere superiority for spatial processing in the first stage to left-hemisphere superiority in the third stage. The shift was due to musicians' results only. In girls, musical talent did not influence the relative participation of left- and right-hemisphere functions for spatial processing.