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Full-Text Articles in Psychology
Does Physical Activity Influence Semantic Memory Activation In Amnestic Mild Cognitive Impairment?, J. Smith, Kristy Nielson, John Woodard, Michael Seidenberg, Matthew Verber, Sally Durgerian, Piero Antuono, Alissa Butts, Nathan Hantke, Melissa Lancaster, Stephen Rao
Does Physical Activity Influence Semantic Memory Activation In Amnestic Mild Cognitive Impairment?, J. Smith, Kristy Nielson, John Woodard, Michael Seidenberg, Matthew Verber, Sally Durgerian, Piero Antuono, Alissa Butts, Nathan Hantke, Melissa Lancaster, Stephen Rao
Kristy Nielson
The effect of physical activity (PA) on functional brain activation for semantic memory in amnestic mild cognitive impairment (aMCI) was examined using event-related functional magnetic resonance imaging during fame discrimination. Significantly greater semantic memory activation occurred in the left caudate of High- versus Low-PA patients, (P=0.03), suggesting PA may enhance memory-related caudate activation in aMCI.
A Task To Manipulate Attentional Load, Set-Shifting, And Inhibitory Control: Convergent Validity And Test–Retest Reliability Of The Parametric Go/No-Go Test, Scott Aaron Langenecker, Jon-Kar Zubieta, Elizabeth Young, Kristy Nielson
A Task To Manipulate Attentional Load, Set-Shifting, And Inhibitory Control: Convergent Validity And Test–Retest Reliability Of The Parametric Go/No-Go Test, Scott Aaron Langenecker, Jon-Kar Zubieta, Elizabeth Young, Kristy Nielson
Kristy Nielson
Traditional neuropsychological measures of executive functioning are difficult to employ in functional imaging and clinical trial contexts and have tremendous practice effects. They also have poor sensitivity and specificity, while test–retest reliability is often not assessed in computer-based tests. The present study evaluates some psychometric properties of a new Parametric Go/No-Go (PGNG) Task. The PGNG consists of three levels of difficulty assessing attention, set-shifting, and processing speed, with the two more difficult levels assessing inhibitory control. A total of 63 healthy control participants were recruited at two sites to evaluate the psychometric properties of the PGNG. The PGNG was found …
Individual Differences Associated With The Repeated Endorsement Of Post-Event Misinformation, Timothy Arentsen, Benjamin Bock, Kristy Nielson
Individual Differences Associated With The Repeated Endorsement Of Post-Event Misinformation, Timothy Arentsen, Benjamin Bock, Kristy Nielson
Kristy Nielson
No abstract provided.
Reduction Of The Misinformation Effect By Arousal Induced After Learning, Shaun English, Kristy Nielson
Reduction Of The Misinformation Effect By Arousal Induced After Learning, Shaun English, Kristy Nielson
Kristy Nielson
Misinformation introduced after events have already occurred causes errors in later retrieval. Based on literature showing that arousal induced after learning enhances delayed retrieval, we investigated whether post-learning arousal can reduce the misinformation effect. 251 participants viewed four short film clips, each followed by a retention test, which for some participants included misinformation. Afterward, participants viewed another film clip that was either arousing or neutral. One week later, the arousal group recognized significantly more veridical details and endorsed significantly fewer misinformation items than the neutral group. The findings suggest that arousal induced after learning reduced source confusion, allowing participants to …
Stressor-Induced Increase In Muscle Fatigability Of Young Men And Women Is Predicted By Strength But Not Voluntary Activation, Manda Keller-Ross, Hugo Pereia, Jaclyn Pruse, Tejin Yoon, Bonnie Schlinder-Delap, Kristy Nielson, Sandra Hunter
Stressor-Induced Increase In Muscle Fatigability Of Young Men And Women Is Predicted By Strength But Not Voluntary Activation, Manda Keller-Ross, Hugo Pereia, Jaclyn Pruse, Tejin Yoon, Bonnie Schlinder-Delap, Kristy Nielson, Sandra Hunter
Kristy Nielson
This study investigated mechanisms for the stressor-induced changes in muscle fatigability in men and women. Participants performed an isometric-fatiguing contraction at 20% maximal voluntary contraction (MVC) until failure with the elbow flexor muscles. Study one (n = 55; 29 women) involved two experimental sessions: 1) a high-stressor session that required a difficult mental-math task before and during a fatiguing contraction and 2) a control session with no mental math. For some participants (n = 28; 14 women), cortical stimulation was used to examine mechanisms that contributed to muscle fatigability during the high-stressor and control sessions. Study two (n = 23; …
Enhanced Post-Learning Memory Consolidation Is Influenced By Arousal Predisposition And Emotion Regulation But Not By Stimulus Valence Or Arousal, Kristy Nielson, William Lorber
Enhanced Post-Learning Memory Consolidation Is Influenced By Arousal Predisposition And Emotion Regulation But Not By Stimulus Valence Or Arousal, Kristy Nielson, William Lorber
Kristy Nielson
Emotionally arousing stimuli are more memorable than neutral ones and arousal induced after learning enhances later retrieval. However, there is as yet little study of how stimulus qualities might interact with induced arousal and how individual differences might influence the modulation of memory. Thus, the present study examined the effect of arousal induced after learning on memory for words that varied in both arousal and valence quality, as well as the influence of three individual differences factors that are known to influence arousal response: emotional suppression, emotional reappraisal, and arousal predisposition. Seventy-six adults (57 female) viewed and rated 60 words …