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Very high density EEG elucidates spatiotemporal aspects of early visual processing.
Robinson, Amanda K; Venkatesh, Praveen; Boring, Matthew J; Tarr, Michael J; Grover, Pulkit; Behrmann, Marlene.
Afiliación
  • Robinson AK; Department of Psychology, Carnegie Mellon University, Pittsburgh, USA. amanda.robinson@uqconnect.edu.au.
  • Venkatesh P; Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, USA. amanda.robinson@uqconnect.edu.au.
  • Boring MJ; Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, USA.
  • Tarr MJ; Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, USA.
  • Grover P; Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, USA.
  • Behrmann M; Department of Neuroscience, University of Pittsburgh, Pittsburgh, USA.
Sci Rep ; 7(1): 16248, 2017 11 24.
Article en En | MEDLINE | ID: mdl-29176609
Standard human EEG systems based on spatial Nyquist estimates suggest that 20-30 mm electrode spacing suffices to capture neural signals on the scalp, but recent studies posit that increasing sensor density can provide higher resolution neural information. Here, we compared "super-Nyquist" density EEG ("SND") with Nyquist density ("ND") arrays for assessing the spatiotemporal aspects of early visual processing. EEG was measured from 128 electrodes arranged over occipitotemporal brain regions (14 mm spacing) while participants viewed flickering checkerboard stimuli. Analyses compared SND with ND-equivalent subsets of the same electrodes. Frequency-tagged stimuli were classified more accurately with SND than ND arrays in both the time and the frequency domains. Representational similarity analysis revealed that a computational model of V1 correlated more highly with the SND than the ND array. Overall, SND EEG captured more neural information from visual cortex, arguing for increased development of this approach in basic and translational neuroscience.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Percepción Visual / Electroencefalografía Tipo de estudio: Diagnostic_studies / Prognostic_studies Límite: Female / Humans Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Percepción Visual / Electroencefalografía Tipo de estudio: Diagnostic_studies / Prognostic_studies Límite: Female / Humans Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido