AI Article Synopsis
- Auditory feedback is crucial for controlling the pitch of the voice (F0), and this study investigates the brain areas involved in this process using neuroimaging.
- The researchers conducted an experiment where subjects vocalized while receiving altered pitch feedback, observing how their voice pitch reflexively changed in response.
- fMRI results showed increased activity in the superior temporal gyrus (STG) when subjects experienced pitch shifts, suggesting that this brain region plays a key role in detecting pitch errors and comparing actual voice pitch to expected pitch.
Article Abstract
Auditory feedback is important for the control of voice fundamental frequency (F0). In the present study we used neuroimaging to identify regions of the brain responsible for sensory control of the voice. We used a pitch-shift paradigm where subjects respond to an alteration, or shift, of voice pitch auditory feedback with a reflexive change in F0. To determine the neural substrates involved in these audio-vocal responses, subjects underwent fMRI scanning while vocalizing with or without pitch-shifted feedback. The comparison of shifted and unshifted vocalization revealed activation bilaterally in the superior temporal gyrus (STG) in response to the pitch shifted feedback. We hypothesize that the STG activity is related to error detection by auditory error cells located in the superior temporal cortex and efference copy mechanisms whereby this region is responsible for the coding of a mismatch between actual and predicted voice F0.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3342468 | PMC |
| http://dx.doi.org/10.1016/j.neuroimage.2012.02.068 | DOI Listing |
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