Ishiko N, Hanamori T, Murayama N
Experientia. 1979 Jun 15;35(6):773-4. doi: 10.1007/BF01968239.
Lateral and medial branch of the frog's IXth nerve innervates rostral third and caudal two-thirds of the tongue surface, respectively. The amounts of gustatory signals in these branches differ in proportion to the area they supply.