Portal de Periódicos da CAPES

Volume Displacement Of The Tympanic Membrane At Stapedius Reflex Activity In Different Postures: Studies on Variations in Perilymphatic Pressure

1978; Taylor & Francis; Volume: 85; Issue: 1-6 Linguagem: Inglês

10.3109/00016487809121416

1651-2251

Margaretha L. Casselbrant, Sven Ingelstedt, Anneli Ivarsson,

Neuroscience of respiration and sleep

With the microflow method the volume displacement of the tympanic membrane and its direction of movement can be recorded at stapedius reflex contraction. There is an outward or inward movement of the tympanic membrane, which is affected by changes in posture. The results indicate that the perilymphatic pressure in man varies with the posture and that these variations can be measured indirectly outside the tympanic membrane. This can only be done, however, on condition that there are no pressure variations across the tympanic membrane. This method opens up new ways of studying possible pressure changes in the inner ear in acute diseases.