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 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 کاملMechanisms of spatial attention revealed by hemispatial neglect.
We report performance by a patient, NG, with hemispatial neglect after nondominant stroke, in detecting briefly (200 msec) presented visual targets. NG's detection of targets (gaps in circles) was determined by the location of the target in the space in which stimuli appeared. Gaps on the neglected side of a circle at fixation were rarely detected when circles of uniform size were always presen...
متن کاملSpatial neglect
The syndrome of visuospatial neglect is a common consequence of unilateral brain injury. It is most often associated with stroke and is more severe and persistent following right hemisphere damage, with reported frequencies in the acute stage of up to 80%. Neglect is primarily a disorder of attention whereby patients characteristically fail to orientate, to report or to respond to stimuli locat...
متن کاملAttention to Neglect
Patients with spatial neglect fail to attend to stimuli in the contralesional visual world. He et al. used fMRI to reveal how disrupted functional connectivity, independent of task-evoked activation, in ventral and dorsal attentional networks may explain behavioral impairment in neglect and recovery from acute neglect.
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ژورنال
عنوان ژورنال: Annual Review of Neuroscience
سال: 2011
ISSN: 0147-006X,1545-4126
DOI: 10.1146/annurev-neuro-061010-113731