Bihemispheric Leftward Bias in a Visuospatial Attention-Related Network
نویسندگان
چکیده
منابع مشابه
Bihemispheric leftward bias in a visuospatial attention-related network.
Asymmetry of spatial attention has long been described in both disease (hemispatial neglect) and healthy (pseudoneglect) states. Although right-hemisphere specialization for spatial attention has been suggested, the exact neural mechanisms of asymmetry have not been deciphered yet. A recent functional magnetic resonance imaging study from our laboratory serendipitously revealed bihemispheric le...
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Four experiments were conducted to ascertain whether myopia is associated with deficits of visuospatial attention. In myopic and emmetropic control subjects, we studied: (1) automatic and voluntary orienting of attention, (2) focusing of attention and (3) performance on a visual search task. The results indicated that automatic orienting was defective in myopics and their performance in visual ...
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A leftward bias is well known in humans and animals, and commonly related to the right hemisphere dominance for spatial attention. Our previous fMRI study suggested that this bias is mediated by faster conduction from the right to left parietal cortices, than the reverse (Siman-Tov et al., 2007). However, the limited temporal resolution of fMRI and evidence on the critical involvement of sub-co...
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Humans primarily attend to objects in the left side of space, as shown in cancellation tasks routinely used during neuropsychological testing [1,2]. This asymmetry is thought to arise from a right hemispheric superiority in the control of spatial attentional resources [3], and is assumed to depend on the corpus callosum which mediates fast communication between two specialized hemispheres of th...
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ژورنال
عنوان ژورنال: Journal of Neuroscience
سال: 2007
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.0599-07.2007