Changes in consonant perception driven by adaptation of vowel production to altered auditory feedback
Schuerman, W. L., Nagarajan, S., & Houde, J.
Changes in consonant perception driven by adaptation of vowel production to altered auditory feedback. In M. Wolters, J. Livingstone, B. Beattie, R. Smith, M. MacMahon, J. Stuart-Smith, & J. Scobbie (Eds.
), Proceedings of the 18th International Congresses of Phonetic Sciences (ICPhS 2015)
. London: International Phonetic Association.
Adaptation to altered auditory feedback has been shown to induce subsequent shifts in perception. However, it is uncertain whether these perceptual changes may generalize to other speech sounds. In this experiment, we tested whether exposing the production
of a vowel to altered auditory feedback affects perceptual categorization of a consonant distinction.
In two sessions, participants produced
CVC words containing the vowel /i/, while intermittently categorizing stimuli drawn from a continuum
between "see" and "she." In the first session feedback
was unaltered, while in the second session the
formants of the vowel were shifted 20% towards /u/.
Adaptation to the altered vowel was found to reduce
the proportion of perceived /S/ stimuli. We suggest
that this reflects an alteration to the sensorimotor
mapping that is shared between vowels and consonants.