Linear models of simple cells: correspondence to real cell responses and space spanning properties.
نویسنده
چکیده
Despite their limitations, linear filter models continue to be used to simulate the receptive field properties of cortical simple cells. For theoreticians interested in large scale models of visual cortex, a family of self-similar filters represents a convenient way in which to characterise simple cells in one basic model. This paper reviews research on the suitability of such models, and goes on to advance biologically motivated reasons for adopting a particular group of models in preference to all others. In particular, the paper describes why the Gabor model, so often used in network simulations, should be dropped in favour of a Cauchy model, both on the grounds of frequency response and mutual filter orthogonality.
منابع مشابه
Constructing a Factor Augmented VAR Model to Analyze Transmission of Oil and Monetary Shocks to Iranian Economy
There is a growing attention to models which contain a broader set of economic data. In recent decade, introduction of Factor Augmented VAR models through augmentation of traditional VAR models with unobservable “factors” has made a new route to econometric modeling. In spite of the growing number of international papers and researches which have used FAVAR approach to modeling policy shocks to...
متن کاملDifferenced-Based Double Shrinking in Partial Linear Models
Partial linear model is very flexible when the relation between the covariates and responses, either parametric and nonparametric. However, estimation of the regression coefficients is challenging since one must also estimate the nonparametric component simultaneously. As a remedy, the differencing approach, to eliminate the nonparametric component and estimate the regression coefficients, can ...
متن کاملP38: The Immunoregulatory Effect of Cyclic Dinucleotides on Human Immune Cells
In multiple sclerosis (MS) beneficial effects have been assigned to the interferon (IFN)-I subclass IFN-ß, making its administration a first-line disease-modifying treatment in MS. IFN-I responses can be induced by cyclic-dinucleotide (CDN) triggered activation of Stimulator-of-interferon-genes (STING) and have essential immunomodulatory effects. A beneficial effect of STING activation on...
متن کاملSpike-triggered characterization of excitatory and suppressive stimulus dimensions in monkey V1
Neurons in primary visual cortex are commonly characterized using linear models, or simple extensions of linear models. Specifically, V1 simple cell responses are often characterized using a rectified linear receptive field, and complex cell responses are often described as the sum of squared responses of two linear subunits. We examined this class of model directly by applying spike-triggered ...
متن کاملGRADUAL NORMED LINEAR SPACE
In this paper, the gradual real numbers are considered and the notion of the gradual normed linear space is given. Also some topological properties of such spaces are studied, and it is shown that the gradual normed linear space is a locally convex space, in classical sense. So the results in locally convex spaces can be translated in gradual normed linear spaces. Finally, we give an examp...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Spatial vision
دوره 14 3-4 شماره
صفحات -
تاریخ انتشار 2001