Publications by authors named "MariaCarla Piastra"
Article Synopsis
- The study focuses on a 23-year-old woman, J., who has chronic aphasia from a left-hemisphere stroke, highlighting that much of the existing research on stroke language function primarily involves older populations.
- Using diffusion MRI and magnetoencephalography (MEG), researchers found severe damage to J.'s language-related white matter and identified significant word-finding difficulties, demonstrating that her naming abilities are disrupted due to impaired lexical-semantic and phonological retrieval.
- Unlike the typical left-hemisphere dominance for language processing, J. relied on her right hemisphere for conceptual and naming tasks, revealing a different neural recruitment pattern but still showing limited retrieval capabilities.
In this article, we focused on developing the conditionally Gaussian hierarchical Bayesian model (CG-HBM), which forms a superclass of several inversion methods for source localization of brain activity using somatosensory evoked potential (SEP) and field (SEF) measurements. The goal of this proof-of-concept study was to improve the applicability of the CG-HBM as a superclass by proposing a robust approach for the parametrization of focal source scenarios. We aimed at a parametrization that is invariant with respect to altering the noise level and the source space size.
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