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Atypical Relationships Between Spontaneous EEG and fMRI Activity in Autism.
Mash, Lisa E; Keehn, Brandon; Linke, Annika C; Liu, Thomas T; Helm, Jonathan L; Haist, Frank; Townsend, Jeanne; Müller, Ralph-Axel.
Afiliación
  • Mash LE; Brain Development Imaging Laboratories, Department of Psychology, San Diego State University, San Diego, California.
  • Keehn B; San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, California.
  • Linke AC; Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, Indiana.
  • Liu TT; Brain Development Imaging Laboratories, Department of Psychology, San Diego State University, San Diego, California.
  • Helm JL; Department of Radiology, Center for Functional MRI, University of California, San Diego, La Jolla, California.
  • Haist F; San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, California.
  • Townsend J; Department of Psychology, San Diego State University, San Diego, California.
  • Müller RA; San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, California.
Brain Connect ; 10(1): 18-28, 2020 02.
Article en En | MEDLINE | ID: mdl-31884804
ABSTRACT
Autism spectrum disorders (ASDs) have been linked to atypical communication among distributed brain networks. However, despite decades of research, the exact nature of these differences between typically developing (TD) individuals and those with ASDs remains unclear. ASDs have been widely studied using resting-state neuroimaging methods, including both functional magnetic resonance imaging (fMRI) and electroencephalography (EEG). However, little is known about how fMRI and EEG measures of spontaneous brain activity are related in ASDs. In the present study, two cohorts of children and adolescents underwent resting-state EEG (n = 38 per group) or fMRI (n = 66 ASD, 57 TD), with a subset of individuals in both the EEG and fMRI cohorts (n = 17 per group). In the EEG cohort, parieto-occipital EEG alpha power was found to be reduced in ASDs. In the fMRI cohort, blood oxygen level-dependent (BOLD) power was regionally increased in right temporal regions and there was widespread overconnectivity between the thalamus and cortical regions in the ASD group relative to the TD group. Finally, multimodal analyses indicated that while TD children showed consistently positive relationships between EEG alpha power and regional BOLD power, these associations were weak or negative in ASDs. These findings suggest atypical links between alpha rhythms and regional BOLD activity in ASDs, possibly implicating neural substrates and processes that coordinate thalamocortical regulation of the alpha rhythm.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Trastorno del Espectro Autista Límite: Adolescent / Child / Female / Humans / Male Idioma: En Revista: Brain Connect Año: 2020 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Trastorno del Espectro Autista Límite: Adolescent / Child / Female / Humans / Male Idioma: En Revista: Brain Connect Año: 2020 Tipo del documento: Article