title: [Spatial compatibility and position of the effectors].
abstract: Mean reaction times obtained with crossed hands (right had on the left and left hand on the right) are slower than reaction times obtained with uncrossed hands (right hand on the right and left hand on the left). These results have been explained as a compatibility effect between the responding hand and its spatial position. The goal of the present experiment was to establish whether the position of the hand is encoded by the subjects relative to their body (absolute position) or relative to the other hand (relative position). The subjects performed a discrimination task on two visual stimuli. Stimuli and hands were either on the same side of the body (both on the left or both on the right) or had different absolute position. In all conditions the subjects responded with crossed and uncrossed hands. The results support the hypothesis that relative position is encoded.
mesh_terms: D007839:Functional Laterality; D006801:Humans; D010775:Photic Stimulation; D011597:Psychomotor Performance; D013037:Spatial Behavior
vernacular_title: Compatibilita' spaziale e posizione degli effettori.