Interhemispherical asymmetry individual profile, psychological and psychic disturbancies and peculiarities as well as other health problems

Abstract

Sinistrality belongs to such a phenomenon rate and importance of which got increased during last years (sinisters amount together with ambidexters is approximately 20%). Interest to sinistrality as a phenomenon grows in many branches of theoretical and practical medicine. Left-handers change their hand-use easier than right-handers do and it is known that such changes are not good for study, health, brain functioning (manual skills, speech in part). When grasping the tool, younger infants are more influenced by their hand preference than older infants, who are better at anticipating the most successful strategies. Handedness is studied in twins.