The elastic properties of the tympanic membrane system in divers and non-divers.

The volume/pressure relationship of the tympanic membrane system was studied in 24 scuba divers. The results were compared with the results obtained from 98 non-diving subjects. Among persons with a good function of the Eustachian tube, divers had an increased mobility of the tympanic membrane system as compared to non-diving subjects. Divers with a reduced function of the Eustachian tube did not differ from the non-diving subjects with a reduced tubal function. Factors that might influence the volume/pressure relationship of the tympanic membrane system are discussed.