Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 43 for “"N-back"”.
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Connecting the Dots between N-back, Operation Span, and Raven's Progressive Matrices
… as measures of working memory capacity, N-back tasks and Operation Span (OSPAN) correlate inadequately to use them interchangeably. Further, both tasks appear to have unique relationships with Raven's Advanced Progressive Matrices (RAPM), a measure of fluid intelligence, but the nature of …
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N-back Performance with Trauma-Relevant Visual Distractors: Associations with Posttraumatic Stress Symptomatology
… attentional resources to inhibit and shift back towards primary task goals. In this way, task effectiveness can be maintained at the cost of inefficiently slowed responding. A cross-sectional sample of veterans from Operations Enduring/Iraqi Freedom (OEF/OIF) were recruited (n = 128) to …
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Adverse childhood experiences, working memory, and stress
… (ACEs), working memory as assessed by an n-back task, and stress. Working memory task demands were manipulated by varying the cognitive load (1-back/3-back) and time limit (standard-paced/time-restricted), and stress was measured both subjectively via self-report and objectively via heart …
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Emotion Regulation: Is it More Taxing for Adolescents than for Adults?
… a cognitively taxing working memory task (the N-Back) before and after a manipulation designed to elicit strong negative feelings (anger or embarrassment). Performance on the N-Back should be impaired by strong emotion (Baumeister et al., 2007; Richards, 2004), and failure to improve in …
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The Effects of Intermittent Theta Burst Stimulation on Working Memory in Depressed Patients
Background: People with depression struggle with cognitive impairments such as decreased working memory. The brain areas associated with working memory, such as the prefrontal cortex and hippocampus are negatively affected by depression; studies have shown decreased volume, activity, and disturbed …
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The Relationships Among Age, Physical Activity, and Working Memory
… reaction time on verbal and visuospatial n-back tasks, and age-related performance decrements were exacerbated in the most difficult task conditions. All participants performed less accurately and took longer to respond to stimuli as the verbal and visuospatial n-back tasks became more …
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Working memory training and transcranial electrical brain stimulation
… transfer by testing whether gains following backward digit recall (BDR) training transferred within- and across-paradigm to untrained backward recall and n-back tasks with varying degrees of overlap with the training activity. A further aim was to test whether transcranial direct current …
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Olfactory short term memory: understanding perceptual representations of odours and the role of encoding strategies in working memory.
… working memory was then examined using the n-back task with verbalisable and hard-to-verbalise odours. A working memory advantage for verbalisable odours was replicated (Jönsson et al., 2011), but this advantage was unrelated to the adoption of a verbal rehearsal strategy. Instead, effects …
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The impact of acute psychological stress on declarative and working memory functioning
… list. WM was assessed using an n-back test with various difficulty levels. One hundred (42 males) undergraduate psychology students from the University of Cape Town were recruited. Phase of menstrual cycle and oral contraceptive use were controlled for in female participants. …
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The Nature of Working Memory in Aphasia
… non-nameable stimuli) and WM load (0-, 1-, and 2-back). Data were analyzed with respect to the differential impact of these variables within and across subjects and groups. Whereas expected effects of word frequency were elicited in stimulus confrontation naming, LHD subjects were affected only …
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The influence of low physical activity levels versus extreme physical activity levels on brain structure and working memory
Background: Habitual levels of moderate to vigorous levels of physical activity (MVPA) levels are associated with positive health outcomes and improvement in cognitive function. A challenge facing optimal health outcomes is determining optimal levels of physical activity levels; people can engage …
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Pharmacological fMRI on the effects of Fluoxetine on functions of Working Memory, Impulsiveness and Cognitive Flexibility in boys with Attention Deficit Hyperactivity Disorder and boys with Autism Spectrum Disorder
… randomised design, while they performed N-Back, Stop and reversal learning tasks. Repeated measures analyses within patients assessed drug effects. Patients under each drug condition were compared to 20 controls to test for normalisation effects. <br/>During the N-Back, under placebo, …
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Something old, something new: The demanding process of serial updating in working memory
… strategy data. Chapter 1 provided a theoretical background and reviewed experimental investigations of WM updating with a particular emphasis on two updating tasks, running span and n-back. Chapter 2 then described an experiment in which the recruitment of cognitive resources was charted while …
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The effects of mental training on brain computer interface performance with distractions
… speller BCI, a verbal learning task, and an N-back test. No significant difference in performance was found between meditation and control groups. Our research does suggest however, significant differences for the P300 and motor imagery protocols may be found if a larger group (>20 subjects per …
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Determining the effects of emotion on prospective memory performance
… College students completed three blocks of an n-back task with positive and negative emotionally valenced images in the prospective memory blocks for the Experimental condition and neutral images in the Control condition. Results revealed that although there were no differences between positive …
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Short-Form Videos and Symptoms of ADHD: Associations with Attention, Working Memory, and Cognitive Control
… directly to the cognitive tasks (Simon, N-Back, and Psychomotor Vigilance tasks). I hypothesized that exposure to short-form videos would be associated with decreased attention, working memory, and cognitive control, even after controlling for symptoms of anxiety and depression and social …
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A Behavioral Study on the Adult Marmoset Interference Control in Spatial Working Memory
… sequencing task (SOST), which resembles an n-back paradigm and targets updating processes in internal interference control. However, the training time for the marmoset to reach proficiency on this paradigm is long given the short marmoset lifespan. In an attempt to accelerate marmoset learning …
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The Effect of C-Section Birth on Attention Task Performance and Cortical Grey Matter Integrity
… the Stroop Task, the Trail Making Test, and an n-back task. Adults born via C-section were less accurate on target-absent conditions in the visual search task. No other tests showed significant differences based on birth method. Additionally, whole-brain voxel-based morphometry analysis was …
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Pruning the right branch : working memory and understanding sentences
… function. Scores on the different tests (N-back, reading span, backward digit span) did not correlate highly, and were predicted by measures of different hypothesized components of working memory. These results indicate that working memory is best conceived of as a system of multiple, …
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How does practice affect working memory? : The efficacy of adaptive-difficulty working memory training programs
… task (Working Memory Period, Colour Corsi, and N-Back). No improvements were seen in any training group beyond what was also seen in an active control group in composite measures of verbal and visuo-spatial working memory, or processing speed. A final working memory training experiment (N = 55) …
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