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Titolo:
Auditory probe sensitivity to mental workload changes - an event-related potential study
Autore:
Ullsperger, P; Freude, G; Erdmann, U;
Indirizzi:
Fed Inst Occupat Safety & Hlth, D-10317 Berlin, Germany Fed Inst Occupat Safety & Hlth Berlin Germany D-10317 17 Berlin, Germany
Titolo Testata:
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
fascicolo: 3, volume: 40, anno: 2001,
pagine: 201 - 209
SICI:
0167-8760(200104)40:3<201:APSTMW>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED-POTENTIALS; PERFORMANCE; RESOURCES;
Keywords:
ERP; P300; N100; novelty P3; novel; probes; workload; oddball; perceptual resources; central processing resources;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Ullsperger, P Fed Inst Occupat Safety & Hlth, Noeldnerstr 40-42, D-10317 Berlin, Germany Fed Inst Occupat Safety & Hlth Noeldnerstr 40-42 Berlin Germany D-10317
Citazione:
P. Ullsperger et al., "Auditory probe sensitivity to mental workload changes - an event-related potential study", INT J PSYCP, 40(3), 2001, pp. 201-209

Abstract

The goal of this study was to explore the utility of parameters of ERPs for assessment of mental workload during performance of complex tasks. In addition to a baseline auditory oddball task, 15 healthy adult volunteers performed gauge monitoring (Gauge) and mental arithmetic (Math) separately and together. Throughout the task performance three types of auditory stimuli were presented as probes, i.e. 80% 1000 Hz tones, 10% 2000 Hz tones and 10% novel sounds. The ERP components N1 and P3 were analysed, which are assumedto reflect perceptive and central processing resources. The results interpreted in the framework of capacity theory indicate high demand on processing resources already during separate performance of both tasks Gauge or Math. During simultaneous performance the workload on average exceeded the limits of processing capacity: the performance data impaired significantly. TheERP measures N1 and P3 were confirmed in their sensitivity and diagnosticity. By using novel sounds as probes with involuntary attention-capturing properties, one might overcome a problem of the irrelevant probe technique, i.e. whether the operator spends his spare capacity for processing of the irrelevant probes. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/04/20 alle ore 03:16:09