Abnormal temporal dynamics of visual attention in spatial neglect patients

被引:308
作者
Husain, M [1 ]
Shapiro, K [1 ]
Martin, J [1 ]
Kennard, C [1 ]
机构
[1] UNIV WALES,SCH PSYCHOL,BANGOR LL57 2DG,GWYNEDD,WALES
基金
英国惠康基金;
关键词
D O I
10.1038/385154a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
WHEN rye identify a visual object such as a word or letter, sur ability to detect a second object is impaired if it appears within 400 ms of the first(1-5). This phenomenon has been termed the attentional blink or dwell time and is a measure of our ability Lo allocate attention over time (temporal attention), Patients with unilateral visual neglect are unaware of people or objects contralateral to their lesion(6,7). They are considered to have It disorder of attending to a particular location in space (spatial attention)(6-11). Here we examined the non-spatial temporal dynamics of attention in patients, using a protocol for assessing the attentional blink. Neglect patients with right parietal, frontal or basal ganglia strokes had an abnormally severe and protracted attentional blink. When they identified a letter, their awareness of a subsequent letter was significantly diminished for a length of time that was three times as long as fur individuals without neglect, Our results demonstrate far the first time that visual neglect is a disorder of directing attention in time, as well as space.
引用
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页码:154 / 156
页数:3
相关论文
共 29 条
  • [11] Visual neglect associated with frontal lobe infarction
    Husain, M
    Kennard, C
    [J]. JOURNAL OF NEUROLOGY, 1996, 243 (09) : 652 - 657
  • [12] BALINT,REZSO AND HIS MOST CELEBRATED CASE
    HUSAIN, M
    STEIN, J
    [J]. ARCHIVES OF NEUROLOGY, 1988, 45 (01) : 89 - 93
  • [13] JACKSON S, IN PRESS CURR OPIN N
  • [14] Jeannerod M., 1987, Neurophysiological and neuropsychological aspects of spatial neglect
  • [15] Kinsbourne M, 1970, Trans Am Neurol Assoc, V95, P143
  • [16] Mesulam M., 1985, PRINCIPLES BEHAV NEU
  • [17] MORROW LA, 1988, PSYCHOBIOLOGY, V16, P261
  • [18] POSNER MI, 1984, J NEUROSCI, V4, P1863
  • [19] HOW DO THE PARIETAL LOBES DIRECT COVERT ATTENTION
    POSNER, MI
    WALKER, JA
    FRIEDRICH, FA
    RAFAL, RD
    [J]. NEUROPSYCHOLOGIA, 1987, 25 (1A) : 135 - 145
  • [20] TEMPORARY SUPPRESSION OF VISUAL PROCESSING IN AN RSVP TASK - AN ATTENTIONAL BLINK
    RAYMOND, JE
    SHAPIRO, KL
    ARNELL, KM
    [J]. JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 1992, 18 (03) : 849 - 860