Mechanisms Underlying Development of Visual Maps and Receptive Fields
نویسندگان
چکیده
منابع مشابه
Mechanisms underlying development of visual maps and receptive fields.
Patterns of synaptic connections in the visual system are remarkably precise. These connections dictate the receptive field properties of individual visual neurons and ultimately determine the quality of visual perception. Spontaneous neural activity is necessary for the development of various receptive field properties and visual feature maps. In recent years, attention has shifted to understa...
متن کاملMechanisms for stable and robust development of orientation maps and receptive fields
Development of orientation maps in ferret and cat primary visual cortex (V1) has been shown to be stable, in that the earliest measurable maps are similar in form to the eventual adult map, robust, in that similar maps develop in both dark rearing and in a variety of normal visual environments, and yet adaptive, in that the final map pattern reflects the statistics of the specific visual enviro...
متن کاملVisual 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 کاملReceptive Fields and Maps in the Visual Cortex: Models of Ocular Dominance and Orientation Columns
under the title \Models of Ocular Dominance and Orientation Columns." Reused by permission. ABSTRACT The formation of ocular dominance and orientation columns in the mammalian visual cortex is brieey reviewed. Correlation-based models for their development are then discussed, beginning with the models of Von der Malsburg. For the case of semi-linear models, model behavior is well understood: co...
متن کاملLaminar development of receptive fields, maps and columns in visual cortex: the coordinating role of the subplate.
How is development of cortical maps in V1 coordinated across cortical layers to form cortical columns? Previous neural models propose how maps of orientation (OR), ocular dominance (OD), and related properties develop in V1. These models show how spontaneous activity, before eye opening, combined with correlation learning and competition, can generate maps similar to those found in vivo. These ...
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: Annual Review of Neuroscience
سال: 2008
ISSN: 0147-006X,1545-4126
DOI: 10.1146/annurev.neuro.31.060407.125533