Abstract
This study investigates structural connectivity between left fronto-parietal brain regions that were identified in a previous fMRI study which used different linguistic manipulation tasks. Diffusion-weighted images were acquired from 20 volunteers. Structural connectivity between brain regions from the fMRI study was computed using probabilistic fiber tracking. For suprasegmental manipulation, left inferior parietal lobule (IPL) and left inferior frontal gyrus (IFG), pars opercularis, were connected by a dorsal pathway via the arcuate fascicle and superior longitudinal fascicle III. For segmental manipulation, left IPL and IFG, pars triangularis, were connected by a ventral pathway via the middle longitudinal fascicle and the extreme capsule. We conclude that the dorsal pathway provides a route for mapping from phonological memory in IPL to the inferior frontal articulatory network while the ventral pathway could facilitate the modulation of phonological units based on lexical-semantic aspects, mediate the complexity of auditory objects and the unification of actor-event schemata.
| Original language | English |
|---|---|
| Journal | Brain and Language |
| Volume | 127 |
| Issue number | 2 |
| Pages (from-to) | 241-250 |
| Number of pages | 10 |
| ISSN | 0093-934X |
| DOIs | |
| Publication status | Published - 11.2013 |
Funding
The work was supported by the Federal Ministry of Education and Research (BMBF-research collaborations “Mechanisms of brain reorganization in the language network” [01GW0661] and “From dynamic sensorimotor interaction to conceptual representation: Deconstructing apraxia” [01GW0572]). DS was supported by a Scholar Award of the James S. McDonnell Foundation.
Research Areas and Centers
- Health Sciences
DFG Research Classification Scheme
- 2.23-08 Human Cognitive and Systems Neuroscience
- 2.23-05 Experimental Models for the Understanding of Nervous System Diseases
- 2.23-07 Clinical Neurology, Neurosurgery and Neuroradiology
