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Titolo:
Information processing deficits in head injury assessed with ERPs reflecting early and late processing stages
Autore:
Reinvang, I; Nordby, H; Nielsen, CS;
Indirizzi:
Univ Oslo, Dept Psychol, N-0317 Oslo, Norway Univ Oslo Oslo Norway N-0317 niv Oslo, Dept Psychol, N-0317 Oslo, Norway Univ Bergen, Dept Med & Biol Psychol, Bergen, Norway Univ Bergen Bergen Norway rgen, Dept Med & Biol Psychol, Bergen, Norway
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 7, volume: 38, anno: 2000,
pagine: 995 - 1005
SICI:
0028-3932(2000)38:7<995:IPDIHI>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED-POTENTIAL FINDINGS; EVENT-RELATED POTENTIALS; TRAUMATIC BRAIN INJURY; AUDITORY ODDBALL TASK; ATTENTION; ATTENUATION; WAVE; EEG;
Keywords:
P3; Nl; attention; oddball paradigm;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Reinvang, I Univ Oslo, Dept Psychol, Box 1094 Blindern, N-0317 Oslo, Norway Univ Oslo Box 1094 Blindern Oslo Norway N-0317 7 Oslo, Norway
Citazione:
I. Reinvang et al., "Information processing deficits in head injury assessed with ERPs reflecting early and late processing stages", NEUROPSYCHO, 38(7), 2000, pp. 995-1005

Abstract

ERPs provide informative measures of slowed information processing in headinjury. While several studies have reported changes in long latency ERPs (N2, P3) in head injury, the data on early ERP components related to attention selection are inconclusive. The problem may be partly methodological because the standard oddball paradigm does not give an adequate basis for discriminating components contributing to the N1 and P2 waveforms. Following a suggestion by Garcia-Larrea et al. [10: Garcia-Larrea L, Lukasziewicz A-C, Maugiere F. Revisiting the oddball paradigm. Non-target vs neutral stimuli and the evaluation of ERP attention effects. Neuropsychologia 1992;30:723-741] we used an extended oddball paradigm to study measures of early processing (N1-average, P250) as well as conventional cognitive ERPs (N1, P2, N2, P3) in a group of head injured patients and controls. We found evidence of deficits in early processing of neutral and non-target stimuli in the patient group, and interpret the findings as an indication that the patients areless efficient in terminating processing of irrelevant stimuli. The results further indicate that processing deviations affect both target and non-target stimuli in the oddball paradigm and thus the allocation of attention in the task as a whole. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 12:13:31