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Dimitriadis, Stavros I.; Kanatsouli, Kassiani; Laskaris, Nikolaos A.; Tsirka, Vasso; Vourkas, Michael; Micheloyannis, Sifis – Brain and Cognition, 2012
Multichannel EEG traces from healthy subjects are used to investigate the brain's self-organisation tendencies during two different mental arithmetic tasks. By making a comparison with a control-state in the form of a classification problem, we can detect and quantify the changes in coordinated brain activity in terms of functional connectivity.…
Descriptors: Mental Computation, Discriminant Analysis, Brain, Arithmetic
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Luna, Beatriz; Velanova, Katerina; Geier, Charles F. – Brain and Cognition, 2008
Cognitive control of behavior continues to improve through adolescence in parallel with important brain maturational processes including synaptic pruning and myelination, which allow for efficient neuronal computations and the functional integration of widely distributed circuitries supporting top-down control of behavior. This is also a time when…
Descriptors: Eye Movements, Schizophrenia, Psychopathology, Short Term Memory
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Longo, Matthew R.; Lourenco, Stella F. – Brain and Cognition, 2010
Much evidence suggests that common posterior parietal mechanisms underlie the orientation of attention in physical space and along the "mental number line." For example, the small leftward bias ("pseudoneglect") found in paper-and-pencil line bisection is also found when participants "bisect" number pairs, estimating (without calculating) the…
Descriptors: Computation, Number Concepts, Stimuli, Task Analysis
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Hadlington, Lee J.; Bridges, Andrew M.; Beaman, C. Philip – Brain and Cognition, 2006
Three experiments attempted to clarify the effect of altering the spatial presentation of irrelevant auditory information. Previous research using serial recall tasks demonstrated a left-ear disadvantage for the presentation of irrelevant sounds (Hadlington, Bridges, & Darby, 2004). Experiments 1 and 2 examined the effects of manipulating the…
Descriptors: Mental Computation, Human Body, Recall (Psychology), Serial Ordering
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Ketelsen, Kirk; Welsh, Marilyn – Brain and Cognition, 2010
The current study was designed to examine the possible existence of two limited-capacity pools of central executive resources: one each for verbal and visuospatial processing. Ninety-one college students (M age = 19.0, SD = 2.2) were administered a verbal working memory task that involved updating numbers in 2-, 3-, and 4-load conditions. The task…
Descriptors: Mental Computation, Short Term Memory, Recall (Psychology), Arithmetic
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Papousek, Ilona; Schulter, Gunter – Brain and Cognition, 2004
The purpose of the present study was to evaluate whether verbal fluency tasks may specifically induce relatively greater left than right hemispheric activation in the dorsolateral prefrontal cortex. The effectiveness of the manipulation was evaluated by EEG, which was recorded during performance of the verbal fluency task and during two control…
Descriptors: Cognitive Psychology, Brain Hemisphere Functions, Cognitive Processes, Arithmetic
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Farran, Emily K.; Cole, Victoria L. – Brain and Cognition, 2008
Perceptual grouping is a pre-attentive process which serves to group local elements into global wholes, based on shared properties. One effect of perceptual grouping is to distort the ability to estimate the distance between two elements. In this study, biases in distance estimates, caused by four types of perceptual grouping, were measured across…
Descriptors: Perception, Classification, Genetic Disorders, Mental Retardation