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Titolo:
NEW APPLICATION OF THE Z-ESTIMATOR TO IDENTIFY THE COGNITIVE P300 IN NON-AVERAGED HUMAN BRAIN POTENTIALS
Autore:
TOMBERG C;
Indirizzi:
FREE UNIV BRUSSELS,BRAIN RES UNIT,20 RUE EVERS B-1000 BRUSSELS BELGIUM
Titolo Testata:
Neuroscience letters
fascicolo: 3, volume: 184, anno: 1995,
pagine: 153 - 156
SICI:
0304-3940(1995)184:3<153:NAOTZT>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOMATOSENSORY EVOKED-POTENTIALS; RANDOM SEQUENCES; LATE COMPONENTS; STIMULATION; TASKS;
Keywords:
HUMAN COGNITIVE EVENT-RELATED POTENTIALS; P300 BRAIN POTENTIAL; Z ESTIMATION METHOD; NON-AVERAGED SINGLE TRIAL BRAIN RESPONSES; SELECTIVE ATTENTION; ELECTROENCEPHALOGRAM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
C. Tomberg, "NEW APPLICATION OF THE Z-ESTIMATOR TO IDENTIFY THE COGNITIVE P300 IN NON-AVERAGED HUMAN BRAIN POTENTIALS", Neuroscience letters, 184(3), 1995, pp. 153-156

Abstract

Electronic averaging is currently used for displaying event-related potentials such as P300 from the electroencephalogram (EEG). However, there is a growing need for upgraded methods allowing cognitive components to be identified in single trial brain responses. The Z estimationmethod has been adapted for the topographic testing of non-averaged scalp recordings. Z values approximating +1 help validate a genuine P300 while failure to pass the Z test may suggest the spurious nature of a late positivity that mimicks a P300. Z testing can also identify interference from transient EEG alpha activity by showing alternations between +1 and -1 values, as expected from an oscillating alpha generator In contrast with previous methods based on EEG recordings from a single scalp site, our topographic Z method takes into account 28 scalp sites for single trials testing.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/05/20 alle ore 10:58:28