| Popis: |
Phoneme representations provide targets for speech production. During speech production in multilingual speakers, phoneme representations and their associated articulatory movements in multiple languages can be activated simultaneously (Cabrelli Amaro, 2017b; Amengual, 2018, 2021; Simonet & Amengual, 2020). Hearing altered auditory feedback of one’s own voice in real time while speaking induces a mismatch between predicted sensory feedback and heard sensory feedback. This mismatch results in corrective changes to speech production (adaptation) when conditioned over repeated trials. Balanced bilinguals can transfer the after-effects of vowel adaptation between their languages bidirectionally and in equal proportions (Shiller et al., 2022), which suggests that phonemic representations and their changes are shared across the bilingual vowel inventory and are available during production of both languages. However, it is not known with certainty if adaptation magnitude is greater in the L1 or L2 in unbalanced bilinguals, nor how well that adaptation is transferred to an L3. We will test the predictions of Shiller et al. (2022) from another angle, using Spanish and Basque, both of which possess the same vowel system. Therefore, any difference in results across languages cannot be simply attributed to differences in the vowel inventory. Feedback perturbation studies in trilingual speakers will provide a novel picture of how vowel representations of multiple languages influence each other during speech production. |
