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dc.contributor.advisorMachado, Liana
dc.contributor.authorBrett, Christopher Henry Redmond
dc.date.available2016-01-18T00:20:31Z
dc.date.copyright2016
dc.identifier.citationBrett, C. H. R. (2016). Manual Versus Saccadic Assessment of Inhibition and Switching Deficits: Evidence the Saccadic System Exhibits Resistance to Healthy Aging (Thesis, Master of Science). University of Otago. Retrieved from http://hdl.handle.net/10523/6174en
dc.identifier.urihttp://hdl.handle.net/10523/6174
dc.description.abstractInhibition and switching deficits occur with healthy aging and many clinical conditions, compromising performance of daily tasks and thus quality of life. Saccade tasks have often been used to assess inhibition and switching deficits, but they require access to expensive eye-tracking equipment and trained personnel. Moreover, with respect to switching, the aging literature suggests manual tasks may be more sensitive to deficits than saccade tasks. Here we directly compared the two response modalities for assessing inhibition and switching abilities, and characterised changes with healthy aging. We measured in 60 young adults (18-24 years) and 60 older adults (60-72 years) performance on keypress and saccade tasks identical in all ways except for response modality. Results showed that saccadic and manual responses significantly correlated, suggesting keypress tasks can act as a proxy for saccade tasks. Regarding aging effects, compared to saccadic responses, manual responses showed more robust inhibition and switching deficits, which suggests keypress tasks are more sensitive to age-related decline. Moreover, a lack of switching deficits for saccadic responses suggests the oculomotor system may be more resistant to age-related decline. Future research is needed to test whether these patterns extend to clinical populations with inhibition and switching deficits.
dc.language.isoen
dc.publisherUniversity of Otago
dc.rightsAll items in OUR Archive are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectaging
dc.subjectcognitive inhibition
dc.subjectinhibitory control
dc.subjectcognitive switching
dc.subjecteye movements
dc.subjectkeypresses
dc.titleManual Versus Saccadic Assessment of Inhibition and Switching Deficits: Evidence the Saccadic System Exhibits Resistance to Healthy Aging
dc.typeThesis
dc.date.updated2016-01-17T22:56:54Z
dc.language.rfc3066en
thesis.degree.disciplinePsychology
thesis.degree.nameMaster of Science
thesis.degree.grantorUniversity of Otago
thesis.degree.levelMasters
otago.interloanyes
otago.openaccessAbstract Only
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