Volitional control of homonymous hemianopsia: a single case study

被引：1
|
作者：
Trexler, LE
机构：
[1] Indiana Univ, Sch Med, Commun Hosp Indianapolis, Ctr Neuropsychol Rehabil, Indianapolis, IN USA
[2] Indiana Univ, Sch Med, Dept Phys Med & Rehabil, Indianapolis, IN USA
来源：
NEUROPSYCHOLOGIA | 1998年 / 36卷 / 06期
关键词：
volitional control; homonymous hemianopsia;
D O I：
10.1016/S0028-3932(97)00138-3
中图分类号：
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号：
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要：
A 52-year-old woman suffered a posterior left hemisphere infarction involving the geniculo-striate system with right homonymous hemianopsia. Eighteen months after the stroke, we used perimetry and PET imaging of cerebral blood flow to demonstrate the patient's volitional control over the size of the scotoma. The volitional control could be eliminated with competing cognitive tasks. Significant increases in cerebral blood flow in contralateral medial prefrontal cortex, and in ipsilateral dorsolateral frontal convexity, temporoparietal and insular cortex were associated with volitional control of the visual field defect. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：573 / 580
页数：8
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