2026-04-29T02:37:38Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/180702024-11-28T14:46:08Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16927col_20.500.12105_16962

00925njm 22002777a 4500 dc Torres-Prioris, María José author López-Barroso, Diana author Càmara, Estela author Fittipaldi, Sol author Sedeño, Lucas author Ibáñez, Agustín author Berthier, Marcelo L. author García, Adolfo M. author 2020-06-30 Despite its prolific growth, neurolinguistic research on phonemic sequencing has largely neglected the study of individuals with highly developed skills in this domain. To bridge this gap, we report multidimensional signatures of two experts in backward speech, that is, the capacity to produce utterances by reversing the order of phonemes while retaining their identity. Our approach included behavioral assessments of backward and forward speech alongside neuroimaging measures of voxel-based morphometry, diffusion tensor imaging, and resting-state functional connectivity. Relative to controls, both backward speakers exhibited behavioral advantages for reversing words and sentences of varying complexity, irrespective of working memory skills. These patterns were accompanied by increased grey matter volume, higher mean diffusivity, and enhanced functional connectivity along dorsal and ventral stream regions mediating phonological and other linguistic operations, with complementary support of areas subserving associative-visual and domain-general processes. Still, the specific loci of these neural patterns differed between both subjects, suggesting individual variability in the correlates of expert backward speech. Taken together, our results offer new vistas on the domain of phonemic sequencing, while illuminating neuroplastic patterns underlying extraordinary language abilities. http://hdl.handle.net/10668/3680 http://hdl.handle.net/20.500.12105/18070 32606382 10.1038/s41598-020-67551-z 2045-2322 Scientific Reports Diffusion tensor imaging Gray matter Brain Functional neuroimaging Magnetic resonance imaging Memory, short-term Speech Imagen de difusión tensora Sustancia gris Encéfalo Neuroimagen funcional Imagen por resonancia magnética Memoria a corto plazo Habla Neurocognitive signatures of phonemic sequencing in expert backward speakers