P3 amplitude to provoking stimuli during an aggressive encounter and the influence of cortisol: Results of two ERP studies

2010 ◽  
Author(s):  
Robina Bohnke ◽  
K. Bertsch ◽  
J. Fechtner ◽  
A. Dierolf ◽  
S. Richter ◽  
...  
Keyword(s):  
Aggressive Encounter ◽  
P3 Amplitude

P3 amplitude to provoking stimuli during an aggressive encounter and the influence of cortisol-results of two ERP studies

2010 ◽  
Author(s):  
R. Bohnke ◽  
K. Bertsch ◽  
J. Fechtner ◽  
A. Dierolf ◽  
S. Richter ◽  
...  
Keyword(s):  
Aggressive Encounter ◽  
P3 Amplitude

The Relation Between Aerobic Fitness and Cognitive Performance

2016 ◽  
Vol 30 (3) ◽  
pp. 102-113 ◽  
Author(s):  
Chun-Hao Wang ◽  
Chun-Ming Shih ◽  
Chia-Liang Tsai
Keyword(s):  
Cognitive Performance ◽  
Aerobic Fitness ◽  
Reaction Times ◽  
Mediation Model ◽  
Brain Potentials ◽  
Fitness Level ◽  
Eeg Data ◽  
Attention Performance ◽  
P3 Amplitude ◽  
The Relationship

Abstract. This study aimed to assess whether brain potentials have significant influences on the relationship between aerobic fitness and cognition. Behavioral and electroencephalographic (EEG) data was collected from 48 young adults when performing a Posner task. Higher aerobic fitness is related to faster reaction times (RTs) along with greater P3 amplitude and shorter P3 latency in the valid trials, after controlling for age and body mass index. Moreover, RTs were selectively related to P3 amplitude rather than P3 latency. Specifically, the bootstrap-based mediation model indicates that P3 amplitude mediates the relationship between fitness level and attention performance. Possible explanations regarding the relationships among aerobic fitness, cognitive performance, and brain potentials are discussed.

Delta phase reset predicts conflict-related changes in P3 amplitude and behavior

2020 ◽  
Vol 1730 ◽  
pp. 146662 ◽  
Author(s):  
Eric Rawls ◽  
Vladimir Miskovic ◽  
Connie Lamm
Keyword(s):  
Phase Reset ◽  
Delta Phase ◽  
P3 Amplitude ◽  
And Behavior

Association of P3 amplitude to treatment completion in substance dependent individuals

2010 ◽  
Vol 177 (1-2) ◽  
pp. 223-227 ◽  
Author(s):  
Li Wan ◽  
Robyn M. Baldridge ◽  
Amanda M. Colby ◽  
Matthew S. Stanford
Keyword(s):  
Treatment Completion ◽  
Substance Dependent ◽  
P3 Amplitude

scholarly journals Effects of tDCS Dosage on Working Memory in Healthy Participants

2017 ◽  
Author(s):  
Stevan Nikolin ◽  
Donel Martin ◽  
Colleen K. Loo ◽  
Tjeerd W. Boonstra
Keyword(s):  
Working Memory ◽  
Response Time ◽  
Effect Size ◽  
Biological Effects ◽  
Parallel Group Design ◽  
Parallel Group ◽  
P3 Amplitude ◽  
Time Accuracy ◽  
Study Designs ◽  
Healthy Participants

AbstractBackgroundTranscranial direct current stimulation (tDCS) has been found to improve working memory (WM) performance in healthy participants following a single session. However, results are mixed and the overall effect size is small. Interpretation of these results is confounded by heterogeneous study designs, including differences in tDCS dose (current intensity) and sham conditions used.AimsWe systematically investigated the effect of tDCS dose on working memory using behavioural and neurophysiological outcomes.MethodsIn a single-blind parallel group design, 100 participants were randomised across five groups to receive 15 minutes of bifrontal tDCS at different current intensities (2mA, 1mA, and three sham tDCS conditions at 0.034mA, 0.016mA, or 0mA). EEG activity was acquired while participants performed a WM task prior to, during, and following tDCS. Response time, accuracy and an event-related EEG component (P3) were evaluated.ResultsWe found no significant differences in response time or performance accuracy between current intensities. The P3 amplitude was significantly lower in the 0mA condition compared to the 0.034mA, 1mA and 2mA tDCS conditions. Changes in WM accuracy were moderately correlated with changes in the P3 amplitude following tDCS compared to baseline levels (r = 0.34).ConclusionsWorking memory was not significantly altered by tDCS, regardless of dose. The P3 amplitude showed that stimulation at 1mA, 2mA and a sham condition (0.034mA) had biological effects, with the largest effect size for 1mA stimulation. These findings indicate higher sensitivity of neurophysiological outcomes to tDCS and suggests that sham stimulation previously considered inactive may alter neuronal function.

scholarly journals Pattern of forebrain activation in high novelty-seeking rats following aggressive encounter

2011 ◽  
Vol 1422 ◽  
pp. 20-31 ◽  
Author(s):  
Sarah M. Clinton ◽  
Ilan A. Kerman ◽  
Hailey R. Orr ◽  
Tracy A. Bedrosian ◽  
Antony D. Abraham ◽  
...  
Keyword(s):  
Novelty Seeking ◽  
Aggressive Encounter

scholarly journals Frontal and Parietal Components of a Cerebral Network Mediating Voluntary Attention to Novel Events

2003 ◽  
Vol 15 (2) ◽  
pp. 294-313 ◽  
Author(s):  
K. R. Daffner ◽  
L. F. M. Scinto ◽  
A. M. Weitzman ◽  
R. Faust ◽  
D. M. Rentz ◽  
...  
Keyword(s):  
Parietal Lobe ◽  
Substantial Reduction ◽  
Event Related Potentials ◽  
Button Press ◽  
Voluntary Attention ◽  
Parietal Lobes ◽  
Novelty P3 ◽  
Related Potentials ◽  
Posterior Parietal ◽  
P3 Amplitude

Despite the important role that attending to novel events plays in human behavior, there is limited information about the neuroanatomical underpinnings of this vital activity. This study investigated the relative contributions of the frontal and posterior parietal lobes to the differential processing of novel and target stimuli under an experimental condition in which subjects actively directed attention to novel events. Event-related potentials were recorded from well-matched frontal patients, parietal patients, and non-brain-injured subjects who controlled their viewing duration (by button press) of line drawings that included a frequent, repetitive background stimulus, an infrequent target stimulus, and infrequent, novel visual stimuli. Subjects also responded to target stimuli by pressing a foot pedal. Damage to the frontal cortex resulted in a much greater disruption of response to novel stimuli than to designated targets. Frontal patients exhibited a widely distributed, profound reduction of the novelty P3 response and a marked diminution of the viewing duration of novel events. In contrast, damage to posterior parietal lobes was associated with a substantial reduction of both target P3 and novelty P3 amplitude; however, there was less disruption of the processing of novel than of target stimuli. We conclude that two nodes of the neuroanatomical network for responding to and processing novelty are the prefrontal and posterior parietal regions, which participate in the voluntary allocation of attention to novel events. Injury to this network is indexed by reduced novelty P3 amplitude, which is tightly associated with diminished attention to novel stimuli. The prefrontal cortex may serve as the central node in determining the allocation of attentional resources to novel events, whereas the posterior parietal lobe may provide the neural substrate for the dynamic process of updating one's internal model of the environment to take into account a novel event.

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