[Absence of signs of deconnection in four cases of partial anterior and median callosal lesions of vascular and neurosurgical origin (author's transl)].

Three cases of partial anterior and median callosal vascular lesions and one surgical case are presented. Some months later a neuropsychological examination did not show any signs of deconnection. Two interpretations are equally plausible: either the limited extension of the lesions as well as their location explain the absence of signs of deconnection, or these signs had existed but were regressive.