Non-spatial attention engagement in Neglect patients
نویسندگان
چکیده
منابع مشابه
Spatial neglect and attention networks.
Unilateral spatial neglect is a common neurological syndrome following predominantly right hemisphere injuries and is characterized by both spatial and non-spatial deficits. Core spatial deficits involve mechanisms for saliency coding, spatial attention, and short-term memory and occur in conjunction with nonspatial deficits that involve reorienting, target detection, and arousal/vigilance. We ...
متن کاملFunctional MRI exploration of visuospatial attention in acute neglect and non-neglect stroke patients
Introduction. Neglect (NGL) is an intriguing brain lesion syndrome, which manifests with the failure to respond to stimuli of the contralesional side. Usually it occurs after right hemisphere lesion. It is proposed that NGL is deficit of the spatial attention, which is provided by the the function of bilateral intraparietal sulcus (IPS), frontal eye field (FEF), lateral occipital complex (V5/MT...
متن کاملSpatial and non-spatial aspects of neglect
Deficits of contralesional space awareness (neglect and extinction) often follow right hemisphere damage and are typically attributed to the disruption of neurocognitive mechanisms subserving orienting of attention in space (Driver and Vuilleumier, 2001). Neglect affects awareness of contralesional stimuli, whereas extinction affects contralesional awareness only when competing stimuli are pres...
متن کاملAttention, spatial representation, and visual neglect: simulating emergent attention and spatial memory in the selective attention for identification model (SAIM).
The selective attention for identification model (SAIM) is presented. This uses a spatial window to select visual information for recognition, binding parts to objects and generating translation-invariant recognition. The model provides a qualitative account of both normal and disordered attention. Simulations of normal attention demonstrate 2-object costs and effects of object familiarity on s...
متن کاملA non-spatial bias favouring fixated stimuli revealed in patients with spatial neglect.
The cardinal feature of spatial neglect is severely impaired exploration of the contralesional space, a failure resulting in unawareness of many contralesional stimuli. This deficit is exacerbated by a reflexive attentional bias toward ipsilesional items. Here we show that, in addition to these spatially lateralized failures, neglect patients also exhibit a severe bias favouring stimuli present...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/10.7.282