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Author = Kaiser, Jochen;
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Displaying Results 1 - 5 of 5 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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Electrophysiological and information processing variability predicts memory decrements associated with normal age-related cognitive decline and alzheimer's disease (ad)
(2018)
Hogan, Michael J.; Carolan, Leigh; Roche, Richard A.P.; Dockree, Paul M.; Kaiser, Joche...
Electrophysiological and information processing variability predicts memory decrements associated with normal age-related cognitive decline and alzheimer's disease (ad)
(2018)
Hogan, Michael J.; Carolan, Leigh; Roche, Richard A.P.; Dockree, Paul M.; Kaiser, Jochen; Bunting, Brendan P.; Robertson, Ian H.; Lawlor, Brian A.
http://hdl.handle.net/10379/9308
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Electrophysiological and information processing variability predicts memory decrements associated with normal age-related cognitive decline and Alzheimer's disease (AD)
(2006)
Roche, Richard; Hogan, Michael; Carolan, Leigh; Dockree, Paul; Kaiser, Jochen; Bunting,...
Electrophysiological and information processing variability predicts memory decrements associated with normal age-related cognitive decline and Alzheimer's disease (AD)
(2006)
Roche, Richard; Hogan, Michael; Carolan, Leigh; Dockree, Paul; Kaiser, Jochen; Bunting, Brendan; Robertson, Ian; Lawlor, Brian
Abstract:
Recent theoretical models of cognitive aging have implicated increased intra-individual variability as a critical marker of decline. The current study examined electrophysiological and information processing variability and memory performance in normal younger and older controls, and older adults with Alzheimer's disease (AD). It was hypothesized that higher levels of variability would be indicative of age-related and disease-related memory deficits. Results indicated both implicit and explicit memory deficits associated with AD. Consistent with previous research, behavioral speed and variability emerged as sensitive to age- and disease-related change. Amplitude variability of P3 event-related potentials was a unique component of electrophysiological activity and accounted for significant variance in reaction time (RT) mean and RT standard deviation, which in turn accounted for significant variance in memory function. Results are discussed in light of theoretical and applied is...
http://mural.maynoothuniversity.ie/1011/
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Improving audio-visual temporal perception through training enhances beta-band activity
(2019)
Theves, Stephanie; Chan, Jason S.; Naumer, Marcus J.; Kaiser, Jochen
Improving audio-visual temporal perception through training enhances beta-band activity
(2019)
Theves, Stephanie; Chan, Jason S.; Naumer, Marcus J.; Kaiser, Jochen
Abstract:
Multisensory integration strongly depends on the temporal proximity between two inputs. In the audio-visual domain, stimulus pairs with delays up to a few hundred milliseconds can be perceived as simultaneous and integrated into a unified percept. Previous research has shown that the size of this temporal window of integration can be narrowed by feedback-guided training on an audio-visual simultaneity judgment task. Yet, it has remained uncertain how the neural network that processes audio-visual asynchronies is affected by the training. In the present study, participants were trained on a 2-interval forced choice audio-visual simultaneity judgment task. We recorded their neural activity with magnetoencephalography in response to three different stimulus onset asynchronies (0 ms, each participant’s individual binding window, 300 ms) before, and one day following training. The Individual Window stimulus onset asynchrony condition was derived by assessing each participant’s point of s...
http://hdl.handle.net/10468/9023
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Significance of beta-band oscillations in Autism Spectrum Disorders during motor response inhibition tasks: a MEG study
(2020)
Moliadze, Vera; Brodski-Guerniero, Alla; Schuetz, Magdalena; Siemann, Julia; Lyzhko, Ek...
Significance of beta-band oscillations in Autism Spectrum Disorders during motor response inhibition tasks: a MEG study
(2020)
Moliadze, Vera; Brodski-Guerniero, Alla; Schuetz, Magdalena; Siemann, Julia; Lyzhko, Ekaterina; Schlitt, Sabine; Kitzerow, Janina; Langer, Anne; Kaiser, Jochen; Naumer, Marcus J.; Wibral, Michael; Chan, Jason S.; Freitag, Christine M.; Siniatchkin, Michael
Abstract:
In Autism Spectrum Disorders (ASD), impaired response inhibition and lack of adaptation are hypothesized to underlie core ASD symptoms, such as social communication and repetitive, stereotyped behavior. Thus, the aim of the present study was to compare neural correlates of inhibition, post-error adaptation, and reaction time variability in ASD and neuro-typical control (NTC) participants by investigating possible differences in error-related changes of oscillatory MEG activity. Twelve male NTC (mean age 20.3 ± 3.7) and fourteen male patients with ASD (mean age 17.8 ± 2.9) were included in the analysis. Subjects with ASD showed increased error-related reaction time variability. MEG analysis revealed decreased beta power in the ASD group in comparison to the NTC group over the centro-parietal channels in both, the pre-stimulus and post-response interval. In the ASD group, mean centro-parietal beta power negatively correlated with dimensional autism symptoms. In both groups, false alar...
http://hdl.handle.net/10468/9838
Displaying Results 1 - 5 of 5 on page 1 of 1
Bibtex
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Institution
Maynooth University (2)
NUI Galway (1)
University College Cork (2)
Peer Review Status
Peer-reviewed (4)
Unknown (1)
Year
2020 (1)
2019 (1)
2018 (1)
2012 (1)
2006 (1)
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