Subject: Re: Traveling waves or resonance? From: Martin Braun <nombraun(at)TELIA.COM> Date: Mon, 18 Oct 2004 15:18:23 +0200Andrew: My clarifications on the two issues are as valid, and as necessary, after your replies as they were before. I am not going to repeat myself. > 1. Of course Gold predicted spontaneous otoacoustic emissions as well as > the cochlear amplifier. The reason is that the former depend on the > latter. Sorry, but this is another example of the confusion we are dealing with here. Otoacoustic emissions are today even measured in insects. But these animals have no extracellular amplifiers. More well-known are the cases of frogs, turtles, and lizards. All these animals emit spontaneous otoacoustic emissions (SOAEs), but they have no extracellular amplifiers. They apparently emit SOAEs, because the mechanical gating mechanisms of the ion channels in the hair bundles of their sensory cells are self-regulated at the brink of self-oscillation. There is today plenty of literature on this issue. Martin ---------------------------- Martin Braun Neuroscience of Music S-671 95 Klässbol Sweden web site: http://w1.570.telia.com/~u57011259/index.htm