The Role of the Spiral Ligament in Cochlear Mechanics

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Abstract
Maximum deflection of the basilar membrane (BM) in fresh guinea-pig cochlear preparations attains values roughly equal to membrane width. BM displacement is made possible by the elastic spiral ligament, which participates directly in dynamic processes of cochlear mechanics. The movement is transmitted to the spiral ligament during experimental deformation of the BM. This was also demonstrated by the structural changes in the lateral wall epithelium acoustic trauma and by vascular changes produced by resulting from chronic acoustic stress.

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