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Moores, Elisabeth; Cassim, Rizan; Talcott, Joel B. – Neuropsychologia, 2011
Difficulties in visual attention are increasingly being linked to dyslexia. To date, the majority of studies have inferred functionality of attention from response times to stimuli presented for an indefinite duration. However, in paradigms that use reaction times to investigate the ability to orient attention, a delayed reaction time could also…
Descriptors: Cues, Reaction Time, Dyslexia, Attention Control
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Aarts, Esther; Roelofs, Ardi; van Turennout, Miranda – Neuropsychologia, 2009
It is unclear whether task conflict is reflected in the anterior cingulate cortex (ACC) or in more dorsal regions of the medial frontal cortex (MFC). When participants switch between tasks involving incongruent, congruent, and neutral stimuli, it is possible to examine both response conflict (incongruent vs. congruent) and task conflict (congruent…
Descriptors: Stimuli, Reaction Time, Conflict, Task Analysis
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Greene, Ciara M.; Bellgrove, Mark A.; Gill, Michael; Robertson, Ian H. – Neuropsychologia, 2009
Sustained attention is modulated by the neurotransmitter noradrenaline. The balance of dopamine and noradrenaline in the cortex is controlled by the DBH gene. The principal variant in this gene is a C/T change at position-1021, and the T allele at this locus is hypothesised to result in a slower rate of dopamine to noradrenaline conversion than…
Descriptors: Reaction Time, Correlation, Genetics, Attention Control
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Dye, M. W. G.; Green, C. S.; Bavelier, D. – Neuropsychologia, 2009
Previous research suggests that action video game play improves attentional resources, allowing gamers to better allocate their attention across both space and time. In order to further characterize the plastic changes resulting from playing these video games, we administered the Attentional Network Test (ANT) to action game players and…
Descriptors: Cues, Video Games, Tests, Attention Span
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Molenberghs, Pascal; Gillebert, Celine R.; Schoofs, Hanne; Dupont, Patrick; Peeters, Ronald; Vandenberghe, Rik – Neuropsychologia, 2009
The Sustained Attention to Response task is a classical neuropsychological test that has been used by many centres to characterize the attentional deficits in traumatic brain injury, ADHD, autism and other disorders. During the SART a random series of digits 1-9 is presented repeatedly and subjects have to respond to each digit (go trial) except…
Descriptors: Reaction Time, Patients, Cognitive Processes, Neurological Impairments
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Basho, Surina; Palmer, Erica D.; Rubio, Miguel A.; Wulfeck, Beverly; Muller, Ralph-Axel – Neuropsychologia, 2007
Verbal fluency is a widely used neuropsychological paradigm. In fMRI implementations, conventional unpaced (self-paced) versions are suboptimal due to uncontrolled timing of responses, and overt responses carry the risk of motion artifact. We investigated the behavioral and neurofunctional effects of response pacing and overt speech in semantic…
Descriptors: Semantics, Pacing, Inhibition, Cognitive Processes