Asymptomatic destruction of the fornix in man.

In the five previous reports dealing with the effects of interruption of the formix in man, two noted that a severe disturbance of recent memory resulted, and three indicated that no symptoms were evident. The brain was examined in only one of the cases cited. This report describes a patient, without any apparent neurological or psychological disturbances, in whom a malignant tumor had destroyed the formix bilaterally.