title: A loudspeaker servo system for use in studying muscle mechanics.
mesh_terms: D000818:Animals; D001001:Anura; D004558:Electric Stimulation / Q000295:instrumentation; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology*; D009991:Oscillometry; D011845:Radio; D011896:Rana temporaria; D013016:Sound