Tags: Language.
Amami Island Sign or Amami Oshima Sign (Amami O Shima Sign AOSL) is a village sign language or languages of Japan. The region has a high incidence of congenital deafness which is dominant and tends to run in a few families; moreover the difficulty of the terrain has kept these families largely separated so that there is extreme lexical geographical diversity across the island and AOSL is therefore perhaps not a single language.