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Sequential processing in young and older adults in the equiprobable auditory Go/NoGo task

Journal Article


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Abstract


  • Objective: We recently proposed a sequential processing schema for the equiprobable auditory Go/NoGo task, based on a principal components analysis (PCA) of event-related potentials (ERPs) from a university student sample. Here we sought to replicate the schema, and use it to explore processing in well-functioning older adults. Methods: We compared behavioural responding and ERPs of 20 independent-living older adults (Mage = 68.2 years) to data from a sex- and handedness-matched group of university students (Mage = 20.4 years). ERPs had substantial latency differences between the groups, and hence were subjected to separate group temporal PCAs. Results: Component latencies were systematically increased in the older group by some 26%, with no significant increase in RT or error rates. Despite some differences in their identified components, each group displayed differential component responsivity to Go versus NoGo; this was reduced in the older participants. Conclusion: The results support our processing schema, and provide insight into the processing stages in well-functioning older adults. Significance: Understanding the perceptual and cognitive processing stages in normal ageing is a pre-requisite for research on mild cognitive impairment and dementia. This study may also provide a simple paradigm and schema suitable for further exploration of functionality in ageing.

Authors


  •   Barry, Robert J.
  •   De Blasio, Frances (external author)
  •   Cave, Adele E. (external author)

Publication Date


  • 2016

Citation


  • Barry, R. J., De Blasio, F. M. & Cave, A. E. (2016). Sequential processing in young and older adults in the equiprobable auditory Go/NoGo task. Clinical Neurophysiology, 127 (5), 2273-2285.

Scopus Eid


  • 2-s2.0-84960842729

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3409&context=sspapers

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/2408

Number Of Pages


  • 12

Start Page


  • 2273

End Page


  • 2285

Volume


  • 127

Issue


  • 5

Abstract


  • Objective: We recently proposed a sequential processing schema for the equiprobable auditory Go/NoGo task, based on a principal components analysis (PCA) of event-related potentials (ERPs) from a university student sample. Here we sought to replicate the schema, and use it to explore processing in well-functioning older adults. Methods: We compared behavioural responding and ERPs of 20 independent-living older adults (Mage = 68.2 years) to data from a sex- and handedness-matched group of university students (Mage = 20.4 years). ERPs had substantial latency differences between the groups, and hence were subjected to separate group temporal PCAs. Results: Component latencies were systematically increased in the older group by some 26%, with no significant increase in RT or error rates. Despite some differences in their identified components, each group displayed differential component responsivity to Go versus NoGo; this was reduced in the older participants. Conclusion: The results support our processing schema, and provide insight into the processing stages in well-functioning older adults. Significance: Understanding the perceptual and cognitive processing stages in normal ageing is a pre-requisite for research on mild cognitive impairment and dementia. This study may also provide a simple paradigm and schema suitable for further exploration of functionality in ageing.

Authors


  •   Barry, Robert J.
  •   De Blasio, Frances (external author)
  •   Cave, Adele E. (external author)

Publication Date


  • 2016

Citation


  • Barry, R. J., De Blasio, F. M. & Cave, A. E. (2016). Sequential processing in young and older adults in the equiprobable auditory Go/NoGo task. Clinical Neurophysiology, 127 (5), 2273-2285.

Scopus Eid


  • 2-s2.0-84960842729

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3409&context=sspapers

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/2408

Number Of Pages


  • 12

Start Page


  • 2273

End Page


  • 2285

Volume


  • 127

Issue


  • 5