Orienting of attention in left unilateral neglect
نویسندگان
چکیده
منابع مشابه
Orienting of attention in left unilateral neglect.
After right posterior brain damage, patients may ignore events occurring on their left, a condition known as unilateral neglect. Although deficits at different levels of impairment may be at work in different patients, the frequency and severity of attentional problems in neglect patients have been repeatedly underlined. Recent advances in the knowledge of the mechanisms of spatial attention in...
متن کاملImpaired orienting of attention in left unilateral neglect: a componential analysis.
Twenty-six patients suffering from damage to the right side of the brain, 19 of whom exhibited signs of left neglect, as well as 32 matched controls, ran 3 spatial cuing tasks. Patients were also tested with 2 cancellation tests, a line-bisection test, the copy of a complex drawing, and a visual extinction procedure. Results first showed correlations between extinction and cancellation tests pe...
متن کاملImpaired stimulus-driven orienting of attention and preserved goal-directed orienting of attention in unilateral visual neglect.
Neglect patients do not respond to stimuli presented on the side of space contralateral to the side of their brain lesions, indicating deficits to attentional or representational mechanisms. We describe a patient who shows a left neglect in normal reading and line bisection but an intact ability to locate the left end of the stimulus. Further tests showed that his seemingly intact ability to se...
متن کاملLeftward search in left unilateral spatial neglect.
The authors' previous study with an eye camera revealed that when asked to mark the centre of a line patients with left unilateral spatial neglect persist in fixating a point on its right part and place the subjective midpoint there without searching leftwards. The present study examined the patterns of leftward search of nine patients with left unilateral spatial neglect when they were require...
متن کاملLeft unilateral neglect or right hyperattention?
BACKGROUND Contradictory interpretations of left unilateral neglect suggest that it reflects either decreased attention toward the left or increased attention toward the right. According to the right-hyperattention postulate, increasing severity of neglect should result from an increasingly stronger bias toward the right. Thus, response times to right-sided targets should become progressively f...
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ژورنال
عنوان ژورنال: Neuroscience & Biobehavioral Reviews
سال: 2002
ISSN: 0149-7634
DOI: 10.1016/s0149-7634(01)00065-3