title: Intermanual coordination in relation to handedness, familial sinistrality and lateral preferences.
abstract: Intermanual coordination assessed by alternating finger tapping and finger-tapping asymmetry were investigated in 105 healthy right- and 105 left-handers and related to handedness, familial sinistrality and lateral preferences (in hand-clasping, arm-folding and eyedness). Compared to right-handers, left-handers with less pronounced left-hand preferences (Subgroup B) showed higher values in intermanual coordination and lower values in finger-tapping asymmetry. Moreover, familial sinistrality and eyedness interacted with handedness effects. While in right-handers intermanual coordination was significantly higher in subjects with dominant left eye, in left-handers of the Subgroup B it was somewhat higher in those with dominant right eye. Higher values in intermanual coordination and reduced asymmetry in finger tapping may be associated with a greater bihemispheric control and better performance in fast bimanual movements.
authors.affiliation: Universitätsklinik für Psychiatrie/Charité, Medizinische Fakultät der Humboldt-Universität zu Berlin, Germany.
authors.forename: I
authors.initials: I
authors.lastname: Gorynia
authors.forename: D
authors.initials: D
authors.lastname: Egenter
mesh_terms: D000328:Adult; D005260:Female; D005385:Fingers / Q000502:physiology; D007839:Functional Laterality / Q000235:genetics / Q000502:physiology*; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology; D009048:Motor Skills / Q000502:physiology*; D009799:Ocular Physiological Phenomena