Discussion of imalsogreg's comment: Draws on a finding from a [Corey and Hudspeth paper](http://corey.med.harvard.edu/PDFs/1979%20Corey%20Hudspeth%20ionic.pdf) that the reversal potential of mechanotransduction current is different from the Nearnst equallibrium for $Na ^+$, and argues that this is incompatible with the idea that mechanotransduction achieved by ion channels.