پديد آورنده :
فرزانفر، آرزو
عنوان :
بهبود مدل‌سازي كدگذاري عصبي در شبكيه‌ي چشم مبتني بر قيود فيزيولوژيك
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مخابرات سيستم
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر
صفحه شمار :
دوازده، ۶۸ص.: مصور، جدول، نمودار
استاد راهنما :
سعيد صدري، بهزاد نظري
استاد مشاور :
فرزانه شايق
توصيفگر ها :
شبكيه‌ي چشم , كدگذاري كارآمد در شبكيه , قيود فيزيولوژي , ميدان گيرندگي سلول‌هاي گانگليون , ساختار مركز - محيط
تاريخ ورود اطلاعات :
1397/06/10
رشته تحصيلي :
برق و كامپيوتر
دانشكده :
مهندسي برق و كامپيوتر
چكيده انگليسي :
Improvement of Neural Coding Modeling in the Retina based on Physiological Constraints Arezoo Farzanfar a farzanar@ec iut ac ir Date of Submission 2018 07 25 Isfahan University of Technology Department of Electrical and Computer Engineering Degree M Sc Language FarsiSupervisors Dr Saeed Sadri Dr Behzad Nazari Advisor Dr Farzane Shayegh AbstractThe retina is the inner layer of the eye and as a very important part of the neural tissue of the visualsystem enables us to understand the surrounding environment In order to understand the function ing of the human eye and its relation to the brain the mechanism for the transfer and processingof visual information to the brain can be determined using a computational model The input im age stimulates photoreceptors Image information is transmitted by the ganglion cells which areresponsible for transmitting the information to the visual cortex The information transmitted tothe optic nerve of the brain is considered as encoded signals in the receptive field of the ganglioncells Sets of photoreceptors in the retina with synaptic connections modeled by a weight matrixW transmit information of input image to ganglion cells in the form of codes Therefore eachganglion cell has a strong relationship with sets of photoreceptors called receptive field of ganglioncell Hence efficient coding of ganglion cell weight matrix W is important Visual informationshould be transmitted optimally from retina to brain The main problem is that what sort of cod ing must be done to creat a proper representation of the input image on the brain This problemis one of the fundamental challenges in the brain signal processing study Intrinsically there arespatial and temporal correlations in the structure of natural images Hence one of the primary goalsof sensory coding is to reduce the redundancy of input signal So far methods such as principalcomponent analysis PCA and independent component analysis ICA have been proposed for thispurpose Therefore although the determination of the weight matrix W has been solved in a varietyof ways but the results have not been confirmed by experimental results Therefore a method of
استاد راهنما :
سعيد صدري، بهزاد نظري
استاد مشاور :
فرزانه شايق
