https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Do EEG and startle reflex modulation vary with self-reported aggression in response to violent images? https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45036 N = 52) were grouped based on their responses to the Buss–Durkee Hostility Inventory. They were then presented with affect-inducing images while brain event-related potentials (ERPs) and startle reflex modulation (SRM) were recorded to determine non-language-based processes. Explicit valence and arousal ratings for each image were taken to determine subjective affective effects. Results indicated no significant group differences for explicit ratings and SRM. However, ERP results demonstrated significant group differences between the ‘pleasant’ and ‘violent’ emotion condition in the frontal, central and parietal areas across both hemispheres. These findings suggest that parts of the brain process affective stimuli different to what conscious appraisal comes up with in participants varying in self-reported aggression.]]> Wed 26 Oct 2022 11:06:51 AEDT ]]> Duration mismatch negativity and P3a in first-episode psychosis and individuals at ultra-high risk of psychosis https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10485 Wed 11 Apr 2018 17:20:37 AEST ]]> No effect of anodal transcranial direct current stimulation over the motor cortex on response-related ERPs during a conflict task https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27854 Wed 09 Feb 2022 15:57:13 AEDT ]]> L-theanine improves neurophysiological measures of attention in a dose-dependent manner: a double-blind, placebo-controlled, crossover study https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:44475 Wed 06 Sep 2023 10:49:18 AEST ]]> Reconsidering electrophysiological markers of response inhibition in light of trigger failures in the stop-signal task https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46472 N = 156). The parametric model accounted for both stop-signal reaction time (SSRT) and trigger failure (i.e., failures to initiate the inhibition process). The returned SSRT estimate (SSRTEXG3) was attenuated by ≈65 ms compared to traditional nonparametric SSRT estimates (SSRTint). The amplitude and latency of the N1 and P3 event-related potential components were derived for both stop-success and stop-failure trials and compared to behavioral estimates derived from traditional (SSRTint) and parametric (SSRTEXG3, trigger failure) models. Both the fronto-central N1 and P3 peaked earlier and were larger for stop-success than stop-failure trials. For stop-failure trials only, N1 peak latency correlated with both SSRT estimates as well as trigger failure and temporally coincided with SSRTEXG3, but not SSRTint. In contrast, P3 peak and onset latency were not associated with any behavioral estimates of inhibition for either trial type. While the N1 peaked earlier for stop-success than stop-failure trials, this effect was not found in poor task performers (i.e., high trigger failure/slow SSRT). These findings are consistent with attentional modulation of both the speed and reliability of the inhibition process, but not for poor performers. Together with the absence of any P3 onset latency effect, our findings suggest that attentional mechanisms are important in supporting speeded and reliable inhibition processes required in the stop-signal task.]]> Thu 02 Nov 2023 09:54:53 AEDT ]]> Event-related potentials in clinical research: guidelines for eliciting, recording, and quantifying mismatch negativity, P300, and N400 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:7506 Sat 24 Mar 2018 08:38:32 AEDT ]]> Dorsolateral prefrontal cortex activation during automatic auditory duration-mismatch processing in humans: a positron emission tomography study https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:1314 Sat 24 Mar 2018 08:32:44 AEDT ]]> Transcranial direct current stimulation of prefrontal cortex: an auditory event-related potential and proton magnetic resonance spectroscopy study https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20124 Sat 24 Mar 2018 07:51:45 AEDT ]]> Long-term event-related potential changes following organophosphorus insecticide poisoning https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:4771 Sat 24 Mar 2018 07:20:38 AEDT ]]> Mismatch negativity (MMN) as biomarker predicting psychosis in clinically at-risk individuals https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24085 Sat 24 Mar 2018 07:11:47 AEDT ]]> An information theory account of late frontoparietal ERP positivities in cognitive control https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30408 Mon 23 Sep 2019 12:51:41 AEST ]]> Quantifying contextual information for cognitive control https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41262 Mon 01 Aug 2022 09:21:32 AEST ]]>