Cazin L, Lannou J
C R Seances Soc Biol Fil. 1975;169(4):1067-71.
Direct stimulation of the frog's saccular macula shows that the saccular fibers are sensitive to vibrations between 10(-1) (at least) and 8.10(3) Hz and that their response depends on 1) the frequency of the vibration, 2) the origin of the fiber in the macula.