Patients | Proprioceptive transfer | Visual alexia | Visual anomia | Tactile anomia | Agraphia | Constructive apraxia | Ideomotor apraxia | Alien hand (diagonistic apraxia) | MRI features |
---|---|---|---|---|---|---|---|---|---|
MS | + | o | o | o | o | o | + (L) [mild] | + (R) * [weekly] | |
Stroke- induced lesions | |||||||||
MM | + | o | o | + (L) | + (L) | o | + (L) | + (L) [daily] | |
Stroke- induced lesions | |||||||||
AM | + | + (R) [mild] | + (R) | o | + (R) [mild] | + (R) | + (R) | + (R) [weekly] | |
Agenesis |
Columns indicate clinical features of disconnection (based on neuropsychological assessments) which were either present (+) or absent (o) in each patient, with indication of the affected arm, left (L) or right (R) when applicable. Square brackets [] are used to report when symptoms were only mild or the frequency of alien hand episodes. *Alien hand episodes for patient MS were present immediately following the stroke, but resolved six months poststroke, reoccurring only with fatigue or stress. MRI features indicate lesioned (black) and preserved (white) areas of the corpus callosum; a cross indicates complete absence of the corpus callosum from birth.