--- In cybalist@..., Miguel Carrasquer <mcv@...> wrote:
> The /a/-vocalism in forms such as *(s)kWalos (Lat. squalus. Eng.
whale) or
> *kWasyo-/*kWaslo- (Lat. qua:lum, quasillus; Slav. kos^I) "basket"
points to *qW.
>
What are the typological grounds for the statement that uvulars
trigger a-colouring (and not o-colouring, for instance)? What would
be a possible (neuro)physiological explanation? Just wondering.