Sound in the mind.
At last somebody has done some work on this I have been saying this for years and it was one of the reasons I designed cables to perform the way they do.
http://jn.physiology.org/content/83/6/3548
http://jn.physiology.org/content/83/6/3548
Comments
Thanks.
I like that they offer an "Hypothetical explanation of neuronal mechanisms of the hypersonic effect" too.