title: [Event related brain potentials and signal detection: decision confidence and signal probability].
abstract: This paper is concerned with the relation of two components of the late positive complex, P300 and slow wave, to parameters of signal detection theory. In the first experiment, basically a replication of Squires et al., signal probability was 50% and a six point rating scale was used for subjects' answers. Whereas for the P300 the well known relation to subjective confidence (and thus to response criteria) was confirmed, a similar relation could not be found for the slow wave. In the second experiment the local signal probability was varied from 25% to 75% on a trial to trial basis. Under these conditions neither the P300 nor the slow wave exhibited a relation to signal-probability, whilst the relation to decision-confidence was preserved.
authors.affiliation: Neurologische Klinik mit Neurophysiologie der Medizinischen Hochschule Hannover.
authors.forename: T F
authors.initials: TF
authors.lastname: Münte
authors.forename: E
authors.initials: E
authors.lastname: Münte
authors.forename: H J
authors.initials: HJ
authors.lastname: Heinze
authors.forename: M
authors.initials: M
authors.lastname: Scholz
mesh_terms: D000328:Adult; D001143:Arousal / Q000502:physiology*; D001288:Attention / Q000502:physiology; D001309:Auditory Threshold / Q000502:physiology*; D002540:Cerebral Cortex / Q000502:physiology*; D003265:Contingent Negative Variation; D003657:Decision Making / Q000502:physiology; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male; D010897:Pitch Discrimination / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D012815:Signal Processing, Computer-Assisted
vernacular_title: Ereigniskorrelierte Hirnpotentiale und Signaldetektion: Entscheidungskonfidenz und Signalwahrscheinlichkeit.