Sound-induced artifact in cochlear blood flow measurements using the laser Doppler flowmeter.
The laser Doppler flowmeter has been shown to give a response from the cochlea during high intensity acoustic stimulation which is not related to blood flow through the cochlea. The magnitude of this response depends upon the intensity and frequency of stimulation and the location of the probe on the cochlea. Evidence is presented that the response is derived from the vibration of cochlear tissue and/or the bony cochlear shell during acoustic stimulation.
D000161:Acoustic Stimulation; D000818:Animals; D001783:Blood Flow Velocity; D003051:Cochlea / Q000098:blood supply*; D005189:False Positive Reactions; D006168:Guinea Pigs; D012212:Rheology; D014732:Vibration / Q000009:adverse effects*