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Acute effects of caffeine on behavioural and ERP indices of attention in healthy, low consumers of caffeine


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Undy, JW ORCID: 0000-0003-3704-5272 2018 , 'Acute effects of caffeine on behavioural and ERP indices of attention in healthy, low consumers of caffeine', Honours thesis, University of Tasmania.

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Caffeine is commonly used to enhance attentional processes. However, contention remains regarding the extent to which each attentional mechanism is affected by caffeine, and whether caffeine enhances attention over-and-above improvements in general arousal and sustained attention. Subsequently, the present study examined the acute effects of caffeine on behavioural (reaction time & accuracy) and electrophysiological (N1 ERP amplitude) measures of attention. During two separate sessions (separated by 7-14 days), twenty (14 female & 6 male) healthy, low consumers of caffeine (<150mg/day) completed an Attentional Network Task prior to ingesting either caffeine (200mg) or placebo, and again 30-minutes following ingestion. While a partial effect of caffeine upon the alerting and executive control networks was found, results of the present study suggested improvements in reaction time and accuracy following caffeine predominantly reflected a maintenance of general arousal and tonic alertness. It was concluded that caffeine primarily enhanced attentional processing by preventing fatigue and sustaining attention.

Item Type: Thesis - Honours
Authors/Creators:Undy, JW
Keywords: Attentional Network Task, Attentional Network Theory, Electroencephalography, N1 Amplitude, Sustained Attention
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Copyright 2018 the author

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