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Articles 1 - 9 of 9
Full-Text Articles in Social and Behavioral Sciences
Prestimulus Delta And Theta Determinants Of Erp Responses In The Go/Nogo Task, Frances M. De Blasio, Robert J. Barry
Prestimulus Delta And Theta Determinants Of Erp Responses In The Go/Nogo Task, Frances M. De Blasio, Robert J. Barry
Faculty of Social Sciences - Papers (Archive)
Ongoing low-frequency EEG activity has long been associated with ERP components and their cognitive processing interpretations, yet few studies have directly investigated the prestimulus low-frequency EEG-ERP relationships, particularly within the auditory domain. The present study assessed the delta (1-3 Hz) and theta (4-7 Hz) bands individually, and their prestimulus influence on five subsequent components (P1, N1, P2, N2, and P3) within an equiprobable auditory Go/NoGo paradigm. At the nine central sites, accepted trials were sorted according to their ascending vertex prestimulus spectral band amplitude, and ERPs were derived from the upper and lower sorted thirds. The within-subjects analyses included amplitudes …
Short-Term Training In The Go/Nogo Task: Behavioural And Neural Changes Depend On Task Demands, Nicholas Benikos, Stuart J. Johnstone, Steven J. Roodenrys
Short-Term Training In The Go/Nogo Task: Behavioural And Neural Changes Depend On Task Demands, Nicholas Benikos, Stuart J. Johnstone, Steven J. Roodenrys
Faculty of Social Sciences - Papers (Archive)
Neural activity underlying executive functions is subject to modulation as a result of increasing cognitive demands and practice. In the present study, we examined these modulatory effects by varying task difficulty, as manipulated by reaction time deadline (RTD), on inhibitory control during a single Go/Nogo training session (8 blocks; 70% Go). Sixty adults were randomly assigned to one of three task difficulty conditions: High (n = 20), Medium (n = 20) and Low (n = 20), with RTDs of 300, 500 or 1000 ms, respectively. Task performance, Event-related potentials (ERPs) and task-related arousal (indexed by skin conductance level) were examined …
Sequential Processing In The Equiprobable Auditory Go/Nogo Task: A Temporal Pca Study, Robert Barry, Frances M. De Blasio
Sequential Processing In The Equiprobable Auditory Go/Nogo Task: A Temporal Pca Study, Robert Barry, Frances M. De Blasio
Faculty of Social Sciences - Papers (Archive)
The unwarned auditory equiprobable Go/NoGo task provides a convenient means to assess differential processing, although our interpretations remain limited by the lack of research regarding the range of elicited components and their functional significance. We examined sequential processing in this paradigm, presenting 24 participants with a total of 300 trials in two blocks. EEG was recorded from 19 channels, and the Go and NoGo event-related potentials were decomposed using temporal Principal Components Analysis. Of the 218 unrestricted Varimax-rotated factors, seven were identifiable as components based on their latency, polarity, and topography: early N1, Processing Negativity (PN), and P2 components were …
Cnv Resolution Does Not Cause Nogo Anteriorisation Of The P3: A Failure To Replicate Simson Et Al., Janette Smith, Robert Barry, Genevieve Steiner
Cnv Resolution Does Not Cause Nogo Anteriorisation Of The P3: A Failure To Replicate Simson Et Al., Janette Smith, Robert Barry, Genevieve Steiner
Faculty of Social Sciences - Papers (Archive)
For 35 years, some researchers have argued that CNV resolution may affect or even produce the increased P3 for NoGo compared to Go trials, and thus that no 'inhibitory' NoGo P3 exists. This is based on the work of Simson et al. (1977b), the scalp topography of potentials in auditory and visual Go/NoGo tasks. Electroencephalography and Clinical Neurophysiology, 43, 864-875, which compared Go and NoGo topography after CNV was subtracted from NoGo trials only. Specifically, the NoGo P3 topography showed the distinctive frontocentral maximum, which is often linked to motor inhibition, when referenced to a pre-target baseline. This NoGo topography …
Equiprobable Go/Nogo Auditory Erp Components: Adults Vs. Children, Robert Barry, Frances M. De Blasio, Jay P. Borchard
Equiprobable Go/Nogo Auditory Erp Components: Adults Vs. Children, Robert Barry, Frances M. De Blasio, Jay P. Borchard
Faculty of Social Sciences - Papers (Archive)
Abstract presented at the 23rd Australasian Society for Psychophysiology Conference, 20-22 Nov 2013, Wollongong, Australia
Prestimulus Eeg-Erp Determinants In The Equiprobable Auditory Go/Nogo: Assessing The Influence Of Ten Levels Of Activity Using Pca, Frances M. De Blasio, Robert Barry
Prestimulus Eeg-Erp Determinants In The Equiprobable Auditory Go/Nogo: Assessing The Influence Of Ten Levels Of Activity Using Pca, Frances M. De Blasio, Robert Barry
Faculty of Social Sciences - Papers (Archive)
Abstract presented at the 23rd Australasian Society for Psychophysiology Conference, 20-22 Nov 2013, Wollongong, Australia
N1, P2, And P3b Are Affected By The Matching-Stimulus-Interval In An Auditory Equiprobable Go/Nogo Task, Genevieve Steiner, Robert Barry, Craig J. Gonsalvez
N1, P2, And P3b Are Affected By The Matching-Stimulus-Interval In An Auditory Equiprobable Go/Nogo Task, Genevieve Steiner, Robert Barry, Craig J. Gonsalvez
Faculty of Social Sciences - Papers (Archive)
Abstract presented at the 23rd Australasian Society for Psychophysiology Conference, 20-22 Nov 2013, Wollongong, Australia
Varying Task Difficulty In The Go/Nogo Task: The Effects Of Inhibitory Control, Arousal, And Perceived Effort On Erp Components, Nicholas Benikos, Stuart J. Johnstone, Steven J. Roodenrys
Varying Task Difficulty In The Go/Nogo Task: The Effects Of Inhibitory Control, Arousal, And Perceived Effort On Erp Components, Nicholas Benikos, Stuart J. Johnstone, Steven J. Roodenrys
Faculty of Social Sciences - Papers (Archive)
Similar to other executive functions, inhibitory control is thought to be a dynamic process that can be influenced by variations in task difficulty. However, little is known about how different task parameters alter inhibitory performance and processing as a task becomes more difficult. The aim of this study was to investigate the influence of varying task difficulty, via manipulation of reaction time deadline (RTD), on measures of inhibitory control, perceived effort, and task-related arousal (indexed by skin conductance level). Sixty adults completed a visual Go/Nogo task (70% Go) after being randomly assigned to one of three task difficulty conditions: High, …
Prestimulus Alpha And Beta Determinants Of Erp Responses In The Go/Nogo Task, Frances M. De Blasio, Robert Barry
Prestimulus Alpha And Beta Determinants Of Erp Responses In The Go/Nogo Task, Frances M. De Blasio, Robert Barry
Faculty of Social Sciences - Papers (Archive)
The nature of the relationships between the level of immediately-prestimulus EEG activity and auditory ERP components remains unclear. Particularly, both inverse and direct relationships have been reported for the alpha band. Here we aim to clarify the pattern of prestimulus EEG contributions in alpha (8-13 Hz), and investigate those in beta (14-24 Hz), for five ERP components (P1, N1, P2, N2, P3) in an auditory equiprobable Go/NoGo paradigm. Separate FFTs were applied to the prestimulus Cz data of each accepted trial. The alpha and beta bands were independently assessed. The mean prestimulus spectral band amplitude was computed and used to …