White matter connectivity between occipital and temporal regions involved in face and voice processing in hearing and early deaf individuals
| Autor: | Giuseppe Rabini, Olivier Collignon, Chiara Maffei, Stefania Benetti, Lisa Novello, Jorge Jovicich |
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| Přispěvatelé: | UCL - SSH/IPSY - Psychological Sciences Research Institute |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Adult Male Cognitive Neuroscience Sensory system Anatomical-functional connectivity Deafness White matter 03 medical and health sciences 0302 clinical medicine Image Interpretation Computer-Assisted Neural Pathways Neuroplasticity Fractional anisotropy medicine Humans Sensory deprivation Temporal cortex Brain Mapping Neuronal Plasticity White Matter Temporal Lobe Cross modal plasticity 030104 developmental biology Diffusion Magnetic Resonance Imaging medicine.anatomical_structure Diffusion-based tractography Temporal voice area Neurology Cross-modal plasticity Face (geometry) Auditory Perception Female Occipital Lobe Psychology Facial Recognition Neuroscience 030217 neurology & neurosurgery Diffusion MRI |
| Zdroj: | NeuroImage, Vol. 179, p. 263-274 (2018) |
| Popis: | Neuroplasticity following sensory deprivation has long inspired neuroscience research in the quest of understanding how sensory experience and genetics interact in developing the brain functional and structural architecture. Many studies have shown that sensory deprivation can lead to cross-modal functional recruitment of sensory deprived cortices. Little is known however about how structural reorganization may support these functional changes. In this study, we examined early deaf, hearing signer and hearing non-signer individuals using diffusion MRI to evaluate the potential structural connectivity linked to the functional recruitment of the temporal voice area by face stimuli in deaf individuals. More specifically, we characterized the structural connectivity between occipital, fusiform and temporal regions typically supporting voice- and face-selective processing. Despite the extensive functional reorganization for face processing in the temporal cortex of the deaf, macroscopic properties of these connections did not differ across groups. However, both occipito- and fusiform-temporal connections showed significant microstructural changes between groups (fractional anisotropy reduction, radial diffusivity increase). We propose that the reorganization of temporal regions after early auditory deprivation builds on intrinsic and mainly preserved anatomical connectivity between functionally specific temporal and occipital regions. |
| Databáze: | OpenAIRE |
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