منابع مشابه
Neural field description of state-dependent visual receptive field changes
Receptive elds (RFs) in V1 were found to be wider during synchronized than during non-synchronized EEG states, where, in addition, they can sharpen over time. These changes were suggested to be mainly driven by state-dependent LGN-ring patterns. Here we employ a neural eld approach to analytically describe the changing cortical RFs. For pure feedforward networks expressions for spatio-temporal ...
متن کامل1234 Visual field changes in carotid obstructive disease
Purpose: General reduction of differential light sensitivity in glaucoma is a controversial issue. Purely diffuse visual field loss is not a sign of glaucoma, but it has been postulated that the best parts m the visual field are always affected to some extent. We studied the best parts of the visual field in a material of glaucomatow visual fields. Methods: Humphrey 30-2 threshold tests from 19...
متن کاملcomparison of blood flow velocity changes in posterior cerebral artery measured with transcranial doppler sonography in migraineurs with visual aura and normal persons after photostimulation
چکیده ندارد.
15 صفحه اولVisual cortex in aging and Alzheimer's disease: changes in visual field maps and population receptive fields
Although several studies have suggested that cortical alterations underlie such age-related visual deficits as decreased acuity, little is known about what changes actually occur in visual cortex during healthy aging. Two recent studies showed changes in primary visual cortex (V1) during normal aging; however, no studies have characterized the effects of aging on visual cortex beyond V1, import...
متن کاملOptic disc and visual field changes after trabeculectomy.
PURPOSE To assess the changes in optic nerve head (ONH) structure and visual field (VF) sensitivity over time in a cohort of patients with glaucoma after trabeculectomy. METHODS The MoreFlow Medical Research Council 5-Fluorouracil (5-FU) study was an 80-month prospective randomized controlled trial of per-operative 5-FU versus placebo on the outcomes of primary trabeculectomy. Before surgery,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1927
ISSN: 0007-1161
DOI: 10.1136/bjo.11.6.271