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Frontoparietal Tracts Linked to Lateralized Hand Preference and Manual Specialization.
Howells, Henrietta; Thiebaut de Schotten, Michel; Dell'Acqua, Flavio; Beyh, Ahmad; Zappalà, Giuseppe; Leslie, Anoushka; Simmons, Andrew; Murphy, Declan G; Catani, Marco.
Afiliação
  • Howells H; Natbrainlab, Sackler Institute for Translational Neurodevelopment, Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience, Denmark Hill, London, UK.
  • Thiebaut de Schotten M; Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology & Neuroscience, King's College London, Denmark Hill, London, UK.
  • Dell'Acqua F; Brain Connectivity and Behaviour Group, Sorbonne Universities, Hôpital de la Salpêtrière, Paris, France.
  • Beyh A; Frontlab, Institut du Cerveau et de la Moelle épinière (ICM), UPMC UMRS 1127, Inserm U 1127, CNRS UMR 7225, Paris, France.
  • Zappalà G; Natbrainlab, Sackler Institute for Translational Neurodevelopment, Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience, Denmark Hill, London, UK.
  • Leslie A; Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology & Neuroscience, King's College London, Denmark Hill, London, UK.
  • Simmons A; Natbrainlab, Sackler Institute for Translational Neurodevelopment, Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology & Neuroscience, Denmark Hill, London, UK.
  • Murphy DG; Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology & Neuroscience, King's College London, Denmark Hill, London, UK.
  • Catani M; Garibaldi Hospital, Piazza Santa Maria di Gesú, 5, Catania, Italy.
Cereb Cortex ; 28(7): 2482-2494, 2018 07 01.
Article em En | MEDLINE | ID: mdl-29688293
Humans show a preference for using the right hand over the left for tasks and activities of everyday life. While experimental work in non-human primates has identified the neural systems responsible for reaching and grasping, the neural basis of lateralized motor behavior in humans remains elusive. The advent of diffusion imaging tractography for studying connectional anatomy in the living human brain provides the possibility of understanding the relationship between hemispheric asymmetry, hand preference, and manual specialization. In this study, diffusion tractography was used to demonstrate an interaction between hand preference and the asymmetry of frontoparietal tracts, specifically the dorsal branch of the superior longitudinal fasciculus, responsible for visuospatial integration and motor planning. This is in contrast to the corticospinal tract and the superior cerebellar peduncle, for which asymmetry was not related to hand preference. Asymmetry of the dorsal frontoparietal tract was also highly correlated with the degree of lateralization in tasks requiring visuospatial integration and fine motor control. These results suggest a common anatomical substrate for hand preference and lateralized manual specialization in frontoparietal tracts important for visuomotor processing.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Lobo Parietal / Lobo Frontal / Mãos / Lateralidade Funcional / Destreza Motora Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Lobo Parietal / Lobo Frontal / Mãos / Lateralidade Funcional / Destreza Motora Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2018 Tipo de documento: Article