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Titolo:
AN APPROACH TO SINGLE TRIAL ANALYSIS OF EVENT-RELATED POTENTIALS BASED ON SIGNAL-DETECTION-THEORY
Autore:
ROSCHKE J; MANN K; WAGNER P; GROZINGER M; FELL J; FRANK C;
Indirizzi:
UNIV MAINZ,DEPT PSYCHIAT,UNTERE ZAHLBACHER STR 8 D-55101 MAINZ GERMANY
Titolo Testata:
International journal of psychophysiology
fascicolo: 3, volume: 22, anno: 1996,
pagine: 155 - 162
SICI:
0167-8760(1996)22:3<155:AATSTA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
BRAIN POTENTIALS; P300 COMPONENT; MEMORY; EEG; PSYCHOPHYSIOLOGY; SCHIZOPHRENICS; PROBABILITY; INFORMATION; SURPRISE; ADDRESS;
Keywords:
P300; SINGLE TRIAL; SIGNAL DETECTION THEORY; EVENT RELATED POTENTIAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
J. Roschke et al., "AN APPROACH TO SINGLE TRIAL ANALYSIS OF EVENT-RELATED POTENTIALS BASED ON SIGNAL-DETECTION-THEORY", International journal of psychophysiology, 22(3), 1996, pp. 155-162

Abstract

The aim of the present paper was to introduce a single trial analysisto event-related potential measurement in order to illuminate the mechanisms behind an impaired P300 amplitude occurring under certain experimental conditions. For this purpose we applied tools from linear system theory and signal detection theory to single trials in an oddball paradigm in order to estimate the amplitude of the positive deflectionaround the P300 latency following target and nontarget stimuli. According to the density functions of these amplitude distributions we operationally defined 'P300 absent in target' (P300 amplitude smaller thanan individual threshold under target conditions) as well as 'P300 present in nontarget' (amplitude greater than the threshold under nontarget conditions). Our approach appears to be appropriate to differentiate between an overall reduction of single trial event-related potentials and seldom elicited P300s.

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Documento generato il 13/07/20 alle ore 20:27:31