Differential effect of graded contraction of middle ear muscles on the sound transmission of the ear.
D000161:Acoustic Stimulation; D000818:Animals; D002415:Cats; D004432:Ear, Middle / Q000294:innervation / Q000502:physiology*; D004558:Electric Stimulation; D004576:Electromyography; D009119:Muscle Contraction; D009129:Muscle Tonus; D013016:Sound; D014432:Tympanic Membrane; D000159:Vestibulocochlear Nerve