Journal Article

DZNE-2020-04946

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Decoding of task-relevant and task-irrelevant intracranial EEG representations.

van de Nieuwenhuijzen, M. E. (Corresponding author) ; Axmacher, N.DZNE* ; Fell, J. ; Oehrn, C. R. ; Jensen, O. ; van Gerven, M. A. J.

2016
Academic Press Orlando, Fla.

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Please use a persistent id in citations: doi:10.1016/j.neuroimage.2016.05.008

Abstract: Natural stimuli consist of multiple properties. However, not all of these properties are equally relevant in a given situation. In this study, we applied multivariate classification algorithms to intracranial electroencephalography data of human epilepsy patients performing an auditory Stroop task. This allowed us to identify neuronal representations of task-relevant and irrelevant pitch and semantic information of spoken words in a subset of patients. When properties were relevant, representations could be detected after about 350ms after stimulus onset. When irrelevant, the association with gamma power differed for these properties. Patients with more reliable representations of irrelevant pitch showed increased gamma band activity (35-64Hz), suggesting that attentional resources allow an increase in gamma power in some but not all patients. This effect was not observed for irrelevant semantics, possibly because the more automatic processing of this property allowed for less variation in free resources. Processing of different properties of the same stimulus seems therefore to be dependent on the characteristics of the property.

Keyword(s): Adult (MeSH) ; Attention (MeSH) ; Brain: physiopathology (MeSH) ; Brain Mapping: methods (MeSH) ; Electroencephalography: methods (MeSH) ; Epilepsy: physiopathology (MeSH) ; Female (MeSH) ; Goals (MeSH) ; Humans (MeSH) ; Male (MeSH) ; Reproducibility of Results (MeSH) ; Rest: physiology (MeSH) ; Sensitivity and Specificity (MeSH) ; Speech Perception (MeSH) ; Task Performance and Analysis (MeSH)

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Contributing Institute(s):

1. Fehlfunktionen des Gedächtnisses (AG Axmacher)

Research Program(s):

1. 344 - Clinical and Health Care Research (POF3-344) (POF3-344)

Appears in the scientific report 2016

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Database coverage:
; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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