title: Fractionating language comprehension via frequency characteristics of the human EEG.
abstract: We present a new analysis technique for EEG research on language comprehension, which dissociates superficially indistinguishable event-related potential (ERP) components. A frequency-based analysis differentiated between two apparently identical but functionally distinct N400 effects in terms of activity in separable frequency bands, and whether the activity stemmed from increased power or phase locking. Whereas linguistic problem detection is associated with theta band activity (approximately 3.5-7.5 Hz), conflict resolution correlates with activity in the delta band (1-3 Hz). The data further differentiate between the neuronal processing mechanisms involved in different types of conflict resolution on the basis of frequency characteristics (power vs phase locking).
authors.affiliation: Junior Research Group Neurolinguistics, Philipps University Marburg, Wilhelm-Röpke-Strasse 6A, 35032 Marburg, Germany. roehmd@mailer.uni-marburg.de
authors.forename: Dietmar
authors.initials: D
authors.lastname: Roehm
authors.forename: Matthias
authors.initials: M
authors.lastname: Schlesewsky
authors.forename: Ina
authors.initials: I
authors.lastname: Bornkessel
authors.forename: Stefan
authors.initials: S
authors.lastname: Frisch
authors.forename: Hubert
authors.initials: H
authors.lastname: Haider
mesh_terms: D003220:Conflict, Psychological; D003700:Delta Rhythm; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology; D006801:Humans; D007802:Language; D011578:Psycholinguistics; D011932:Reading; D012660:Semantics; D013826:Theta Rhythm