Which of the following is not involved in Wernicke's Korsakoff psychosis
Harrison's principles of internal medicine 17th edition. Pathology: preventricular lesions surround the 3rd ventricles,aqueduct and 4th ventricle; atrophy of mammillary bodies;amnestic defect is related to lesions in dorsal medial nuclei of thalamus.
Mamillary body
Thalamus
Periventricular Grey matter
Hippocampus
C.N.S