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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
Hirnstein, Marco; Bayer, Ulrike; Ellison, Amanda; Hausmann, Markus – Neuropsychologia, 2011
The underlying cognitive and neural mechanisms of the ability to discriminate left from right are hardly explored. Clinical studies from patients with impairments of left-right discrimination (LRD) and neuroimaging data suggest that the left angular gyrus is particularly involved in LRD. Moreover, it is argued that the often reported sex…
Descriptors: Stimulation, Females, Patients, Brain Hemisphere Functions
Almeida, Renita A.; Dickinson, J. Edwin; Maybery, Murray T.; Badcock, Johanna C.; Badcock, David R. – Neuropsychologia, 2010
The Embedded Figure Test (EFT) requires locating a simple shape embedded within a background of overlapping target-irrelevant scene elements. Observers with autism, or those with high levels of autistic-like traits, typically outperform matched comparison groups on the EFT. This research investigated the critical visual properties which give rise…
Descriptors: Autism, Scores, Matched Groups, Visual Perception
Mayor-Dubois, C.; Maeder, P.; Zesiger, P.; Roulet-Perez, E. – Neuropsychologia, 2010
We investigated procedural learning in 18 children with basal ganglia (BG) lesions or dysfunctions of various aetiologies, using a visuo-motor learning test, the Serial Reaction Time (SRT) task, and a cognitive learning test, the Probabilistic Classification Learning (PCL) task. We compared patients with early (less than 1 year old, n=9), later…
Descriptors: Reaction Time, Neurological Impairments, Pathology, Patients
Lee, Byung Hwa; Suh, Mee Kyung; Kim, Eun-Joo; Seo, Sang Won; Choi, Kyung Mook; Kim, Gyeong-Moon; Chung, Chin-Sang; Heilman, Kenneth M.; Na, Duk L. – Neuropsychologia, 2009
Patients with right hemisphere injury often omit or misread words on the left side of a page or the beginning letters of single words (neglect dyslexia). Our study involving a large sample of acute right hemisphere stroke investigated (1) the frequency of neglect dyslexia (ND), (2) the association between ND and other types of contralesional…
Descriptors: Brain Hemisphere Functions, Dyslexia, Patients, Severity (of Disability)
Zaitchik, Deborah; Walker, Caren; Miller, Saul; LaViolette, Pete; Feczko, Eric; Dickerson, Bradford C. – Neuropsychologia, 2010
By age 2, children attribute referential mental states such as perceptions and emotions to themselves and others, yet it is not until age 4 that they attribute representational mental states such as beliefs. This raises an interesting question: is attribution of beliefs different from attribution of perceptions and emotions in terms of its neural…
Descriptors: Sentences, Visual Stimuli, Verbal Stimuli, Form Classes (Languages)
Taylor, N. M.; Jakobson, L. S.; Maurer, D.; Lewis, T. L. – Neuropsychologia, 2009
Young children born very prematurely show elevated thresholds for global motion and global form [Atkinson, J. & Braddick, O. (2007). "Visual and visuocognitive development in children born very prematurely." "Progress in Brain Research, 164." 123-149; MacKay, T. L., Jakobson, L. S., Ellemberg, D., Lewis, T. L., Maurer, D., & Casiro, O. (2005).…
Descriptors: Body Weight, Pathology, Premature Infants, Patients
Shears, Connie; Hawkins, Amanda; Varner, Andria; Lewis, Lindsey; Heatley, Jennifer; Twachtmann, Lisa – Neuropsychologia, 2008
Language comprehension occurs when the left-hemisphere (LH) and the right-hemisphere (RH) share information derived from discourse [Beeman, M. J., Bowden, E. M., & Gernsbacher, M. A. (2000). Right and left hemisphere cooperation for drawing predictive and coherence inferences during normal story comprehension. "Brain and Language, 71", 310-336].…
Descriptors: Language Processing, Brain Hemisphere Functions, Stimuli, Inferences
Lincoln, Amy E.; Long, Debra L.; Baynes, Kathleen – Neuropsychologia, 2007
Previous research has suggested that perceptual information about objects is activated during sentence comprehension [Zwaan, R. A., Stanfield, R. A., & Yaxley, R. H. (2002). Language comprehenders mentally represent the shapes of objects. "Psychological Science, 13"(2), 168-171]. The goal in the current study was to examine the role of the two…
Descriptors: Sentences, Brain Hemisphere Functions, Visual Perception, Language Processing
Barense, Morgan D.; Gaffan, David; Graham, Kim S. – Neuropsychologia, 2007
There has been considerable debate as to whether structures in the medial temporal lobe (MTL) support both memory and perception, in particular whether the perirhinal cortex may be involved in the perceptual discrimination of complex objects with a large number of overlapping features. Similar experiments testing the discrimination of blended…
Descriptors: Patients, Memory, Brain Hemisphere Functions, Visual Perception
Gaffrey, Michael S.; Kleinhans, Natalia M.; Haist, Frank; Akshoomoff, Natacha; Campbell, Ashley; Courchesne, Eric; Muller, Ralph-Axel – Neuropsychologia, 2007
Language delay and impairment are salient features of autism. More specifically, there is evidence of atypical semantic organization in autism, but the functional brain correlates are not well understood. The current study used functional MRI to examine activation associated with semantic category decision. Ten high-functioning men with autism…
Descriptors: Visual Stimuli, Control Groups, Semantics, Autism