A right handed patient with alexia without agraphia, a left visual field deficit, intact color naming and diffuse cerebral atrophy on CT is presented. Neuro-psychological testing supported a diagnosis of dyslexia and right parietal dysfunction. These findings constitute unique observations for the ...
2013; Hilliard,1973; Rizzolatti et al.,1971). For either method, the logic is that stimulus information in each visual field is initially projected to and processed by visual cortex in the contralateral hemisphere (Beaumont,1983). Differences in face-recognition performance between the two hemifi...
People in the reversed group were four times more likely to have a self-reported diagnosis of autism or attention deficit hyperactivity disorder (ADHD). We cannot say from this study whether there is a causal relationship between the reversed profile and autism and ADHD. However, we are ...
However, when the stimulus material was briefly exposed in the right visual field, performance improved substantially. These data suggest that the visuospatial defect seen after right hemisphere disease is attributable to factors other than the incapacity of the left hemisphere to process visuospatial ...
Also, given what we discussed earlier in this chapter about the role of the hippocampus in multimodal cognitive processing, one wonders about generalizedcognitive deficitsin H. M. I am not referring to a loss of intelligence, but rather to the possibility of a general inability to process inform...
attention deficit hyperactivity disorder16,74,75,76,77, autism spectrum disorder15,78,79,80,81,82, educational attainment66,83,84, handedness2,4,45, intelligence67,85,86,87,88and schizophrenia17,89,90,91,92,93. There was evidence for genetic overlap between brain asymmetries and autism (P...
Thus, the primary deficit in comprehension-impaired stroke patients with left and right hemisphere lesions appears not to be a loss of knowledge from the semantic store per se, but difficulty controlling retrieval of this knowledge appropriately in the absence of external support. Although the ...
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A word naming deficit in non-familial sinistrals? Laterality effects of vocal responses to tachistoscopically presented letter stamp Neuropsychologia (1979) M. Bryden Perceptual asymmetry in vision, relation to handedness, eyedness and speech lateralization Cortex (1973) M. Bryden Speech lateralization...
All participants were native English speakers, right-handed, were free of past and present psychiatric disorders including Attention Deficit Hyperactivity Disorder (ADHD), neurological disease, or epilepsy. According to parental report, no participant had hearing impairments, uncorrected visual impairment,...