For most speakers, the #speech sounds one hears (i.e., auditory feedback) matches well with the sounds that one intends to make while speaking.

Thread (1/...)

(2/...) A mismatch of the intended versus actual #auditory feedback of speech sounds can be induced through different conditions, such as delayed auditory feedback or frequency altered auditory feedback.

(3/...) In these cases, speakers unconsciously make adjustments to their #speech movements to compensate for the perceived mismatch between the heard sounds and the intended sounds. Such adjustments underscore the tight integration of auditory-motor functions for speech control.

(4/...) It has been shown in previous studies that compensations to perturbed auditory feedback is attenuated and/or delayed in people who #stutter.

(5/...) In a new study by Sares et al (2020), pitch was perturbed in real time to examine compensatory changes to pitch #vocalization in people who stutter.

(6/...) The researchers also collected fMRI from the same participants to examine brain activity associated with normal vs perturbed auditory feedback trials.

(7/...) For people who stutter, the middle temporal gyrus and superior frontal gyrus were deactivated during auditory perturbation trials relative to normal speech trials.

(8/...) Independent component analysis was also run to examine how large-scale functional #brain networks function differently in these speech conditions in the two groups.

(9/...) Here, auditory and #motor networks were decoupled during the auditory perturbation task in adults who stutter.

(10/...) Although this study is unique in its use functional imaging to compare the brain activity of adults who do and do not stutter during an auditory perturbation task, it is important to note...

(11/11) ...its low sample size, and the study’s inability to replicate behavioral results from previous studies . To read more, please see: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7053555/
#FluencyFriday #stuttering #science #neuroscience #attention #stammering