The effect of binaural occlusion of the external auditory meati on the sensitivity of the normal ear for bone conducted sound.

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Abstract
The results of this investigation show that the phenomenon of "increased bone conduction" is present with binaural occlusion of the meati. The effect of such occlusion is a function of the stimulus tone. Thus occlusion lowered the threshold over the frequency range from 64 to 1024 c.p.s. From 2048 to 8192 c.p.s. occlusion had no significant effect. The effect of occlusion was approximately the same with the bone conduction receiver on the forehead as when on the mastoids. (PsycINFO Database Record (c) 2006 APA, all rights reserved)