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Priftis, Konstantinos; Albanese, Silvia; Meneghello, Francesca; Pitteri, Marco – Brain and Cognition, 2013
Arabic numerals are diffused and language-free representations of number magnitude. To be effectively processed, the digits composing Arabic numerals must be spatially arranged along a left-to-right axis. We studied one patient (AK) to show that left neglect, after right hemisphere damage, can selectively impair the computation of the spatial…
Descriptors: Spatial Ability, Brain Hemisphere Functions, Number Concepts, Neurological Impairments
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
Nagel, Bonnie J.; Herting, Megan M.; Maxwell, Emily C.; Bruno, Richard; Fair, Damien – Brain and Cognition, 2013
Adult functional magnetic resonance imaging (fMRI) literature suggests that a left-right hemispheric dissociation may exist between verbal and spatial working memory (WM), respectively. However, investigation of this type has been obscured by incomparable verbal and spatial WM tasks and/or visual inspection at arbitrary thresholds as means to…
Descriptors: Adolescents, Brain Hemisphere Functions, Short Term Memory, Diagnostic Tests
Suavansri, Ketchai; Falchook, Adam D.; Williamson, John B.; Heilman, Kenneth M. – Brain and Cognition, 2012
Background: Pseudoneglect is a normal left sided spatial bias observed with attempted bisections of horizontal lines and a normal upward bias observed with attempted bisections of vertical lines. Horizontal pseudoneglect has been attributed to right hemispheric dominance for the allocation of attention. The goal of this study was to test the…
Descriptors: Brain Hemisphere Functions, Handedness, Spatial Ability, Lateral Dominance
Nicholls, Michael E. R.; Forte, Jason D.; Loetscher, Tobias; Orr, Catherine A.; Yates, Mark J.; Bradshaw, John L. – Brain and Cognition, 2011
Distinct cognitive and neural mechanisms underlie perception and action in near (within-reach) and far (outside-reach) space. Objects in far space can be brought into the brain's near-space through tool-use. We determined whether a near object can be pushed into far space by changing the pictorial context in which it occurs. Participants (n = 372)…
Descriptors: Photography, Cues, Spatial Ability, Attention
Harasawa, Masamitsu; Shioiri, Satoshi – Brain and Cognition, 2011
The effect of the visual hemifield to which spatial attention was oriented on the activities of the posterior parietal and occipital visual cortices was examined using functional near-infrared spectroscopy in order to investigate the neural substrates of voluntary visuospatial attention. Our brain imaging data support the theory put forth in a…
Descriptors: Brain, Attention, Spatial Ability, Visual Perception
Sunderland, Alan; Wilkins, Leigh; Dineen, Rob; Dawson, Sophie E. – Brain and Cognition, 2013
Impaired tool related action in ideomotor apraxia is normally ascribed to loss of sensorimotor memories for habitual actions (engrams), but this account has not been tested against a hypothesis of a general deficit in representation of hand-object spatial relationships. Rapid reaching for familiar tools was compared with reaching for abstract…
Descriptors: Control Groups, Patients, Brain Hemisphere Functions, Sensory Integration
Shaqiri, Albulena; Anderson, Britt – Brain and Cognition, 2012
In this experiment we studied statistical learning, inter-trial priming, and visual attention. We assessed healthy controls and right brain damaged (RBD) patients with and without neglect, on a simple visual discrimination task designed to measure priming effects and probability learning. All participants showed a preserved priming effect for item…
Descriptors: Identification, Neurological Impairments, Attention, Priming
Holmes, Kevin J.; Lourenco, Stella F. – Brain and Cognition, 2011
Converging behavioral and neural evidence suggests that numerical representations are mentally organized in left-to-right orientation. Here we show that this format of spatial organization extends to emotional expression. In Experiment 1, right-side responses became increasingly faster as number (represented by Arabic numerals) or happiness…
Descriptors: Responses, Stimuli, Brain Hemisphere Functions, Psychological Patterns
Burnham, Bryan R.; Rozell, Cassandra A.; Kasper, Alex; Bianco, Nicole E.; Delliturri, Antony – Brain and Cognition, 2011
The present study examined a visual field asymmetry in the contingent capture of attention that was previously observed by Du and Abrams (2010). In our first experiment, color singleton distractors that matched the color of a to-be-detected target produced a stronger capture of attention when they appeared in the left visual hemifield than in the…
Descriptors: Attention Control, Spatial Ability, Eye Movements, Color
Vidal, Julie; Mills, Travis; Pang, Elizabeth W.; Taylor, Margot J. – Brain and Cognition, 2012
Inhibition is a core executive function reliant on the frontal lobes that shows protracted maturation through to adulthood. We investigated the spatiotemporal characteristics of response inhibition during a visual go/no-go task in 14 teenagers and 14 adults using magnetoencephalography (MEG) and a contrast between two no-go experimental conditions…
Descriptors: Inhibition, Adolescents, Spatial Ability, Cognitive Processes
Propper, Ruth E.; Brunye, Tad T.; Christman, Stephen D.; Januszewskia, Ashley – Brain and Cognition, 2012
Based on their specialized processing abilities, the left and right hemispheres of the brain may not contribute equally to recall of general world knowledge. US college students recalled the verbal names and spatial locations of the 50 US states while sustaining leftward or rightward unilateral gaze, a procedure that selectively activates the…
Descriptors: College Students, Brain Hemisphere Functions, Memory, Specialization
Mongeon, David; Blanchet, Pierre; Messier, Julie – Brain and Cognition, 2013
The capacity to learn new visuomotor associations is fundamental to adaptive motor behavior. Evidence suggests visuomotor learning deficits in Parkinson's disease (PD). However, the exact nature of these deficits and the ability of dopamine medication to improve them are under-explored. Previous studies suggested that learning driven by large and…
Descriptors: Diseases, Learning Strategies, Learning Processes, Patients
Verleger, Rolf; Binkofski, Ferdinand; Friedrich, Monique; Sedlmeier, Peter; Kompf, Detlef – Brain and Cognition, 2011
In patients with the callosal type of anarchic-hand syndrome, the left hand often does not act as intended and counteracts the right hand. Reports are scarce about the underlying neurophysiological mechanisms. We report the case G.H. who developed the syndrome after infarction of the left arteria pericallosa. It has been suggested that the…
Descriptors: Brain Hemisphere Functions, Stimuli, Neurological Impairments, Patients
Page, Jonathan W.; Duhamel, Paul; Crognale, Michael A. – Brain and Cognition, 2011
Recent neuroimaging research suggests that early visual processing circuits are activated similarly during visualization and perception but have not demonstrated that the cortical activity is similar in character. We found functional equivalency in cortical activity by recording evoked potentials while color and luminance patterns were viewed and…
Descriptors: Imagery, Visualization, Spatial Ability, Diagnostic Tests