Description
The ability to detect and correct errors during and after speech production is essential for maintaining accuracy and avoiding disruption in communication. Thus, it is
crucial to understand the basic mechanisms underlying how the speech-motor system
evaluates different errors and correspondingly corrects them. This study aims to explore
the impact of three different features of errors, introduced by formant perturbations, on
corrective and adaptive responses: (1) magnitude of errors, (2) direction of errors, and (3)
extent of exposure to errors. Participants were asked to produce the vowel /ε/ in the
context of consonant-vowel-consonant words. Participant-specific formant perturbations
were applied for three magnitudes of 0.5, 1, 1.5 along the /ε-æ/ line in two directions of
simultaneous F1-F2 shift (i.e., shift in the ε-æ direction) and shift to outside the vowel
space. Perturbations were applied randomly in a compensation paradigm, so each
perturbed trial was preceded and succeeded by several unperturbed trials. It was observed
that (1) corrective and adaptive responses were larger for larger magnitude errors, (2)
corrective and adaptive responses were larger for errors in the /ε-æ/ direction, (3)
corrective and adaptive responses were generally in the /ε-ɪ/ direction regardless of
perturbation direction and magnitude, (4) corrective responses were larger for
perturbations in the earlier trials of the experiment.
Details
Title
- Examining Corrective Responses and Adaptive Responses to Formant Perturbations
Contributors
- Sreedhar, Anuradha Jyothi (Author)
- Daliri, Ayoub (Thesis advisor)
- Rogalsky, Corianne (Committee member)
- Zhou, Yi (Committee member)
- Arizona State University (Publisher)
Date Created
The date the item was original created (prior to any relationship with the ASU Digital Repositories.)
2024
Subjects
Resource Type
Collections this item is in
Note
- Partial requirement for: M.S., Arizona State University, 2024
- Field of study: Speech and Hearing Science