کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7314924 | 1645037 | 2015 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dissociable spatial and non-spatial attentional deficits after circumscribed thalamic stroke
ترجمه فارسی عنوان
اختلالات توجه فضایی و غیر فضایی پس از سکته مغزی تالامیک محدود شده است
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کلمات کلیدی
PPCROCFMWT-BVBMVSTMDLPFCtemporal parietal junctionFEFRWTWCSTLGNACCTPJVOI - CANstandard deviation - انحراف معیارThalamic infarction - انفارکتوس تالاموسWisconsin Card Sorting Test - تست مرتب سازی کارت ویسکانسینMagnetic resonance - تشدید مغناطیسیVisual short term memory - حافظه کوتاه مدت ویژوالvolume of interest - حجم سودVisual processing speed - سرعت پردازش تصویریanterior cingulate cortex - قشر سینگولیت قدامی، کورتکس سینگولیت قدامیposterior parietal cortex - قشر پاراوتیک خلفیdorsolateral prefrontal cortex - قشر پیشانی غدد درون رحمیTVA - مالیات بر ارزش افزودهfrontal eye field - میدان چشم پیشانیtheory of visual attention - نظریه توجه بصریlateral geniculate nucleus - هسته ژنیکول جانبی جانبی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
چکیده انگلیسی
Thalamic nuclei act as sensory, motor and cognitive relays between multiple subcortical areas and the cerebral cortex. They play a crucial role in cognitive functions such as executive functioning, memory and attention. In the acute period after thalamic stroke attentional deficits are common. The precise functional relevance of specific nuclei or vascular sub regions of the thalamus for attentional sub functions is still unclear. The theory of visual attention (TVA) allows the measurement of four independent attentional parameters (visual short term memory storage capacity (VSTM), visual perceptual processing speed, selective control and spatial weighting). We combined parameter-based assessment based on TVA with lesion symptom mapping in standard stereotactic space in sixteen patients (mean age 41.2 ± 11.0 SD, 6 females), with focal thalamic lesions in the medial (N = 9), lateral (N = 5), anterior (N = 1) or posterior (N = 1) vascular territories of the thalamus. Compared with an age-matched control group of 52 subjects (mean age 40.1 ± 6.4, 35 females), the patients with thalamic lesions were, on the group level, mildly impaired in visual processing speed and VSTM. Patients with lateral thalamic lesions showed a deficit in processing speed while all other TVA parameters were within the normal range. Medial thalamic lesions can be associated with a spatial bias and extinction of targets either in the ipsilesional or the contralesional field. A posterior case with a thalamic lesion of the pulvinar replicated a finding of Habekost and Rostrup (2006), demonstrating a spatial bias to the ipsilesional field, as suggested by the neural theory of visual attention (NTVA) (Bundesen, Habekost, & Kyllingsbæk, 2011). A case with an anterior-medial thalamic lesion showed reduced selective attentional control. We conclude that lesions in distinct vascular sub regions of the thalamus are associated with distinct attentional syndromes (medial = spatial bias, lateral = processing speed).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cortex - Volume 64, March 2015, Pages 327-342
Journal: Cortex - Volume 64, March 2015, Pages 327-342
نویسندگان
Antje Kraft, Kerstin Irlbacher, Kathrin Finke, Christian Kaufmann, Stefanie Kehrer, Daniela Liebermann, Claus Bundesen, Stephan A. Brandt,