Source:http://linkedlifedata.com/resource/umls/id/C0162525
MSH: Self-generated faint acoustic signals from the inner ear (COCHLEA) without external stimulation. These faint signals can be recorded in the EAR CANAL and are indications of active OUTER AUDITORY HAIR CELLS. Spontaneous otoacoustic emissions are found in all classes of land vertebrates.,CSP: acoustic response that originates from the inner ear; measured with an insert microphone placed in the ear canal.