RT Journal Article SR Electronic T1 Posterior alien hand syndrome after a right thalamic infarct JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 447 OP 449 DO 10.1136/jnnp.73.4.447 VO 73 IS 4 A1 Marey-Lopez, J A1 Rubio-Nazabal, E A1 Alonso-Magdalena, L A1 Lopez-Facal, S YR 2002 UL http://jnnp.bmj.com/content/73/4/447.abstract AB The alien hand syndrome, as originally defined, should be reserved for cases in which the hand feels foreign “together with” observable involuntary motor activity. These involuntary movements are unusual during or after acute stroke. Three varieties of alien hand syndrome have been reported, involving lesions of the corpus callosum alone, the corpus callosum plus dominant medial frontal cortex, and posterior cortical and subcortical areas. A patient with posterior alien hand syndrome of vascular aetiology is reported. Imaging studies disclosed an isolated infarction of the right thalamus sparing other cerebral regions.