HIDDEN-FIGURES-TEST PERFORMANCE - LASTING EFFECTS OF UNILATERAL PENETRATING HEAD-INJURY AND TRANSIENT EFFECTS OF BILATERAL CINGULOTOMY

Thurstone's Hidden Figures Test was given to two different groups of patients in a search for clues to the variables that influence early and late changes in behavior after cerebral lesion. Experiment I studied the effects of penetrating head injury in 20-yr veterans of the Korean Campaign and indicated that lasting impairment on Thurstone's test is not a necessary consequence of all unilateral cerebral pathology. Instead, performance reflected the size of the left- or right-hemisphere lesion. Experiment II explored both the short-term and long-term effects of cingulotomy performed to relieve pain or psychiatric disorder. Here, there was a transient drop in the Hidden-Figures-Test scores of patients over 30 yr old but not under 30. © 1979.