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Suegami, Takashi; Laeng, Bruno – Brain and Cognition, 2013
It has been shown that the left and right cerebral hemispheres (LH and RH) respectively process qualitative or "categorical" spatial relations and metric or "coordinate" spatial relations. However, categorical spatial information could be thought as divided into two types: semantically-coded and visuospatially-coded categorical information. We…
Descriptors: Spatial Ability, Semantics, Stimuli, Brain Hemisphere Functions
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Holmes, Scott A.; Heath, Matthew – Brain and Cognition, 2013
An issue of continued debate in the visuomotor control literature surrounds whether a 2D object serves as a representative proxy for a 3D object in understanding the nature of the visual information supporting grasping control. In an effort to reconcile this issue, we examined the extent to which aperture profiles for grasping 2D and 3D objects…
Descriptors: Profiles, Cues, Psychomotor Skills, Perceptual Motor Coordination
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Lv, Caixia; Wang, Quanhong – Brain and Cognition, 2012
Event-related brain potentials (ERPs) were recorded during a Chinese character decision task to examine whether N400 amplitude is modulated by stimulus font. Results revealed large negative-going ERPs in an N400 time window of 300-500 ms to stimuli presented in degraded Xing Kai Ti (XKT) font compared with more intact Song Ti (ST) font regardless…
Descriptors: Evidence, Cues, Romanization, Chinese
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Brunye, Tad T.; Mahoney, Caroline R.; Lieberman, Harris R.; Taylor, Holly A. – Brain and Cognition, 2010
The present work investigated the effects of caffeine (0 mg, 100 mg, 200 mg, 400 mg) on a flanker task designed to test Posner's three visual attention network functions: alerting, orienting, and executive control [Posner, M. I. (2004). "Cognitive neuroscience of attention". New York, NY: Guilford Press]. In a placebo-controlled, double-blind…
Descriptors: Attention, Brain Hemisphere Functions, Task Analysis, Cognitive Processes
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Salo, Ruth; Gabay, Shai; Fassbender, Catherine; Henik, Avishai – Brain and Cognition, 2011
Objective: The goal of the present study was to examine distributed attentional functions in long-term but currently abstinent methamphetamine (MA) abusers using a task that measures attentional alertness, orienting, and conflict resolution. Methods: Thirty currently abstinent MA abusers (1 month-5 years) and 22 healthy non-substance using adults…
Descriptors: Attention Deficit Disorders, Conflict Resolution, Drug Abuse, Comparative Analysis
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Poynter, William; Ingram, Paul; Minor, Scott – Brain and Cognition, 2010
The purpose of this study was to determine whether an index of self-reported attention deficits predicts the pattern of visual field asymmetries observed in behavioral measures of attention. Studies of "normal" subjects do not present a consistent pattern of asymmetry in attention functions, with some studies showing better left visual field (LVF)…
Descriptors: Rating Scales, Visual Perception, Task Analysis, Attention Deficit Hyperactivity Disorder
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Niemeier, Matthias; Stojanoski, Boge; Singh, Vaughan W. A.; Chu, Eddie – Brain and Cognition, 2008
The mechanisms underlying the right hemisphere's dominance for spatial and attentional functions lacks a comprehensively explanation. For example, perceptual biases, as observed in line bisection and related tasks, might be caused by an attentional asymmetry or by perceptual processes such as a specialization of the left and right hemisphere for…
Descriptors: Brain Hemisphere Functions, Attention, Spatial Ability, Cognitive Processes
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Tsai, Chia-Liang; Pan, Chien-Yu; Cherng, Rong-Ju; Hsu, Ya-Wen; Chiu, Hsing-Hui – Brain and Cognition, 2009
The purpose of this study was to investigate and compare the mechanisms of brain activity, as revealed by a combination of the visuospatial attention shifting paradigm and event-related potentials (ERP) in children with developmental coordination disorder (DCD) and typically developing children. Twenty-eight DCD children and 26 typically…
Descriptors: Cues, Reaction Time, Models, Psychomotor Skills
Friesen, C.K.; Moore, C.; Kingstone, A. – Brain and Cognition, 2005
Previous studies have found that the gaze direction of a centrally presented face facilitates response time (RT) to a lone peripheral target. The widely accepted interpretation of this finding is that gaze direction triggers a cortically mediated reflexive shift of spatial attention. In the present study we tested an alternative explanation, that…
Descriptors: Cues, Reaction Time, Visual Perception
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Bish, Joel P.; Chiodo, Renee; Mattei, Victoria; Simon, Tony J. – Brain and Cognition, 2007
One of the defining cognitive characteristics of the chromosome 22q deletion syndrome (DS22q11.2) is visuospatial processing impairments. The purpose of this study was to investigate and extend the specific attentional profile of children with this disorder using both an object-based attention task and an inhibition of return task. A group of…
Descriptors: Cues, Object Permanence, Inhibition, Genetics
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Gabbard, Carl; Ammar, Diala – Brain and Cognition, 2005
A rather consistent finding in studies of perceived (imagined) compared to actual movement in a reaching paradigm is the tendency to overestimate at midline. Explanations of such behavior have focused primarily on perceptions of postural constraints and the notion that individuals calibrate reachability in reference to multiple degrees of freedom,…
Descriptors: Human Body, Cues, Visual Stimuli, Visual Measures
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Bar-Haim, Yair; Lamy, Dominique; Glickman, Shlomit – Brain and Cognition, 2005
Accumulating evidence suggests the existence of a processing bias in favor of threat-related stimulation in anxious individuals. Using behavioral and ERP measures, the present study investigated the deployment of attention to face stimuli with different emotion expressions in high-anxious and low-anxious participants. An attention-shifting…
Descriptors: Cues, Reaction Time, Anxiety, Models