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Title: Neurocognitive signatures of phonemic sequencing in expert backward speakers
Authors: Torres-Prioris, María José
López-Barroso, Diana
Càmara, Estela
Fittipaldi, Sol
Sedeño, Lucas
Ibáñez, Agustín
Berthier, Marcelo L.
García, Adolfo M.
metadata.dc.contributor.authoraffiliation: [Torres-Prioris,MJ; López-Barroso,D; Berthier,ML] Cognitive Neurology and Aphasia Unit, Centro de Investigaciones Médico‑Sanitarias, Instituto de Investigación Biomédica de Málaga (IBIMA), University of Malaga, Malaga, Spain. [Torres-Prioris,MJ; López-Barroso,D] Area of Psychobiology, Faculty of Psychology and Speech Therapy, University of Malaga, Malaga, Spain. [Càmara,E] Cognition and Brain Plasticity Unit, Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain. [Fittipaldi,S; Ibáñez,A; García,AM] Universidad de San Andrés, Victoria, Buenos Aires, Argentina. [Fittipaldi,S; Sedeño,L; Ibáñez,A; García,AM] National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina. [Ibáñez,A] Universidad Autónoma del Caribe, Barranquilla, Colombia. [Ibáñez,A] Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile. [Ibáñez,A; García,AM] Global Brain Health Institute, University of California, San Francisco, United States. [García,AM] Faculty of Education, National University of Cuyo (UNCuyo), Mendoza, Argentina. [García,AM] Departamento de Lingüística Y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile.
Keywords: 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
metadata.dc.subject.mesh: Medical Subject Headings::Persons::Persons::Age Groups::Adult
Medical Subject Headings::Anatomy::Nervous System::Central Nervous System::Brain
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Neuroimaging::Diffusion Tensor Imaging
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Neuroimaging::Functional Neuroimaging
Medical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::Magnetic Resonance Imaging
Medical Subject Headings::Check Tags::Male
Medical Subject Headings::Psychiatry and Psychology::Psychological Phenomena and Processes::Mental Processes::Learning::Memory::Memory, Short-Term
Medical Subject Headings::Persons::Persons::Age Groups::Adult::Middle Aged
Medical Subject Headings::Anatomy::Nervous System::Nerve Net
Medical Subject Headings::Phenomena and Processes::Musculoskeletal and Neural Physiological Phenomena::Nervous System Physiological Phenomena::Nervous System Physiological Processes::Speech
Issue Date: 30-Jun-2020
Publisher: Springer Nature
Citation: Torres-Prioris MJ, López-Barroso D, Càmara E, Fittipaldi S, Sedeño L, Ibáñez A, et al. Neurocognitive signatures of phonemic sequencing in expert backward speakers. Sci Rep. 2020 Jun 30;10(1):10621
Abstract: 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.
metadata.dc.identifier.doi: 10.1038/s41598-020-67551-z
ISSN: 2045-2322 (Online)
Appears in Collections:01- Artículos - IBIMA. Instituto de Investigación Biomédica de Málaga

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