Abstract
The purpose of this research is to establish the phonological status of glottalization phenomena (glottal stops, vowel laringalization, glottal approximants, voiceless vowels, etc.) and aspiration (pre-aspirated and post-aspirated consonants) on languages Macuna, Tucano and Tuyuca, in the light of the theoretical framework proposed by the laboratory phonology presented by Pierrehumbert, B…