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Event‐Related Desynchronization and P300
Author(s) -
Sergeant Joseph,
Geuze Reint,
Winsum Wim
Publication year - 1987
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1987.tb00294.x
Subject(s) - event related potential , psychology , latency (audio) , duration (music) , cognition , event (particle physics) , amplitude , audiology , neuroscience , cognitive psychology , computer science , medicine , telecommunications , art , physics , literature , quantum mechanics
The information processing demands of frame time, cognitive load, and event rate were examined with respect to the duration and amplitude of the event‐related desynchronization (ERD) and the event‐related potential P300. The central question was: are ERD and P300 cortical indices of the same attentional processes or resources? It was found that ERD amplitude became larger and P300 amplitude smaller with a larger load and a slow event rate, independently. ERD duration and P300 latency became longer with a slow event rate and a higher processing load. For ERD duration these effects were additive, for P300 latency they were interactive. Frame time influenced only P300 latency, which became longer with a long frame lime. The results are discussed in relation to a taxonomy of task variables.