Different Patterns of Lateralization of Cognitive Functions in a Left-Handed Patient with Unilateral Right Middle Cerebral Artery Stroke

help explain why patients with atypical lateralization seemed to have slightly less severe aphasia than patients with a typical brain organization [5] . In addition, the more right-handed the subjects were, the lower was the relative incidence of right-hemispheric language dominance, and vice versa [4] . Thus, there was a linear relationship between the degree of handedness and the side of language dominance. Finally, a stronger bilateral activation in left-handers has been demonstrated during a sentence-processing task [6] . Myriad varieties of atypical brain organization have been described in brain-injured patients including cases of partially reversed cerebral lateralization in rightand left-handed patients [7–10] , cases of a completely reversed laterality of cerebral dominance in rightand left-handed patients [11, 12] and, finally, a case of complete lateralization of all cognitive functions in the same hemisphere in a left-handed patient [13] . We here report the case of a left-handed patient who presented potentially 3 different patterns of lateralization following a unilateral right-hemispheric stroke.