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Author = Keane, Michael A.;
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Displaying Results 1 - 2 of 2 on page 1 of 1
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Behavioural and electrophysiological eVects of visual paired associate context manipulations during encoding and recognition in younger adults, older adults and older cognitively declined adults
(2012)
Hogan, Michael; Kenney, Joanne P.M.; Roche, Richard; Keane, Michael A.; Moore, Jennifer...
Behavioural and electrophysiological eVects of visual paired associate context manipulations during encoding and recognition in younger adults, older adults and older cognitively declined adults
(2012)
Hogan, Michael; Kenney, Joanne P.M.; Roche, Richard; Keane, Michael A.; Moore, Jennifer L.; Kaiser, Jochen; Lai, Robert; Upton, Neil
Abstract:
The current study examined the EEG of young, old and old declined adults performing a visual paired associate task. In order to examine the eVects of encoding context and stimulus repetition, target pairs were presented on either detailed or white backgrounds and were repeatedly presented during both early and late phases of encoding. Results indicated an increase in P300 amplitude in the right parietal cortex from early to late stages of encoding in older declined adults, whereas both younger adults and older controls showed a reduction in P300 amplitude in this same area from early to late phase encoding. In the right hemisphere, stimuli encoded with a white background had larger P300 amplitudes than stimuli presented with a detailed background; however, in the left hemisphere, in the later stages of encoding, stimuli presented with a detailed background had larger amplitudes than stimuli presented with a white background. Behaviourally, there was better memory for congruent stimu...
http://mural.maynoothuniversity.ie/6795/
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Distributed cortical phase synchronization in the eeg reveals parallel attention and working memory processes involved in the attentional blink
(2018)
Glennon, Mark; Keane, Michael A.; Elliott, Mark A.; Sauseng, Paul
Distributed cortical phase synchronization in the eeg reveals parallel attention and working memory processes involved in the attentional blink
(2018)
Glennon, Mark; Keane, Michael A.; Elliott, Mark A.; Sauseng, Paul
Abstract:
Attentional blink (AB) describes a visuo-perceptual phenomenon in which the second of 2 targets within a rapid serial visual presentation stream is not detected. There are several cognitive models attempting to explain the fundamentals of this information processing bottleneck. Here, we used electroencephalographic recordings and the analysis of interregional phase synchronization of rhythmical brain activity to investigate the neural bases of the AB. By investigating the time course of interregional phase synchronization separately for trials in which participants failed to report the second target correctly (AB trials) and trials in which no AB occurred, and by clustering interregional connections based on their functional similarity, it was possible to define several distinct cortical networks. Analyzing these networks comprising phase synchronization-over a large spectrum of brain frequencies from theta to gamma activity-it was possible to identify neural correlates for cognitiv...
http://hdl.handle.net/10379/11662
Displaying Results 1 - 2 of 2 on page 1 of 1
Bibtex
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Institution
Maynooth University (1)
NUI Galway (1)
Peer Review Status
Peer-reviewed (1)
Unknown (1)
Year
2018 (1)
2012 (1)
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