Impact of background noise on reaction time and brain DC potential changes of VDT-based spatial attention.
Background noise is often discussed in terms of mental costs. In this study the effect of background noise on brain activity as reflected by the direct coupled (DC) potential was investigated by a within design in ten participants. During two successive blocks of 7 min each, participants performed 1...
| Publicado en: | Ergonomics Vol. 49; no. 2; pp. 202 - 209 |
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| Autores principales: | , |
| Formato: | equations & formulas research Journal Article |
| Publicado: |
Taylor & Francis Ltd
2/10/2006
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106445264&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106445264 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00140139 ERO jtl: Ergonomics issn: 00140139 maglogo: Y pubinfo: dt: 2/10/2006 vid: 49 iid: 2 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 106445264 106445264 2009168936 NLM16484145 106445264 ppf: 202 ppct: 7 formats: tig: atl: Impact of background noise on reaction time and brain DC potential changes of VDT-based spatial attention. aug: au: Trimmel M Poelzl G affil: Medical University of Vienna, OE Public Health, Institute of Environmental Health, Kinderspitalgasse 15, A-1095, Vienna, Austria sug: subj: Noise Reaction Time Brain Physiology Attention Computer Terminals Descriptive Statistics Analysis of Variance Repeated Measures Comparative Studies Human ab: Background noise is often discussed in terms of mental costs. In this study the effect of background noise on brain activity as reflected by the direct coupled (DC) potential was investigated by a within design in ten participants. During two successive blocks of 7 min each, participants performed 156 trials of a visual display terminal (VDT)-based visual-spatial attention task without noise and two blocks with a mixture of the environmental noises of barking dogs, traffic noise and irrelevant speech of 60 dBA. Brain DC potentials were recorded along the midline and analysed for change by time on task. For noise conditions, reaction time was prolonged and the DC-potential shifted towards positivity, contrary to control condition, independent of block and location. Results suggest reduced cortical resources by widespread inhibitory activation through background noise. It can be concluded that even low intensity background noise is associated with energy consumption and with impaired performance in spatial attention. pubtype: Academic Journal doctype: equations & formulas research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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