Parametrically dissociating speech and nonspeech perception in the brain using fMRI.
| Number | 1237 |
|---|---|
| Year | 2001 |
| Drawer | 23 |
| Entry Date | 01/16/2002 |
| Authors | Benson, R.R., Whalen, D.H., Richardson, M., Swainson, B., Clark, V.P., Lai, S. & Liberman, A.M. |
| Contact | |
| Publication | Brain and Language, 78, 364-396 |
| url | http://www.haskins.yale.edu/Reprints/HL1237.pdf |
| Abstract | Candidate brain regions constituting a neural network for preattentive phonetic perception were identified with fMRI and multivariate multiple regression of imaging data. Stimuli contrasted along speech/nonspeech, acoustic, or phonetic complexity (three levels each) and natural/synthetic dimensions. Seven distributed brain regions' activity correlated with speech and speech complexity dimensions, including five left-sided foci [posterior superior temporal gyrus (STG), angular gyrus, ventral occipitotemporal cortex, inferior/posterior supramarginal gyrus, and middle frontal gyrus (MFG)] and two right-sided foci (posterior STG and anterior insula). Only the left MFG discriminated natural and synthetic speech. The data also supported a parallel rather than serial model of auditory speech and nonspeech perception. |
| Notes |
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