Auditory evoked potentials and auditory behavior following prenatal and perinatal asphyxia in rhesus monkeys

Abstract
Two types of asphyxia were studied in monkeys, total asphyxia during mid-pregnancy (94–98 days gestation) and combined partial and total asphyxia at term (165 days gestation). Auditory evoked potentials and the acquisition of 2 auditory discrimination tasks were studied in asphyxiated animals as well as in a group of controls. The brains of all asphyxiates were examined histologically. No auditory discrimination deficit was found in the asphyxiated animals; however, the auditory evoked potentials differentiated between control and asphyxiated animals, especially those with verified inferior colliculus damage.