نتایج جستجو برای: kouh
تعداد نتایج: 16 فیلتر نتایج به سال:
In this thesis, I describe a quantitative model that accounts for the circuits and computations of the feedforward path of the ventral stream of visual cortex. This model is consistent with a general theory of visual processing that extends the hierarchical model of [Hubel and Wiesel, 1959] from primary to extrastriate visual areas. It attempts to explain the first few hundredmilliseconds of vi...
introduction the major threat to habitability of a region may be degradation of arid lands, particularly in developing countries where many people depend upon restricted resources for their livelihood. although land degradation process in arid regions (desertification) is not new or site specific, the environmental awareness in a world board scale has extended and generated a wider public inter...
s of NIH-Conte Meeting – August 29, 2005 The Relationship of Spatial Frequency Tuning to the Substructure of Receptive Fields in Complex Cells of Cat Primary Visual Cortex Ian Finn and David Ferster Northwestern University The receptive fields (RF) of complex cells are uniform in their responses to single flashed bars, a property that predicts broad tuning for stimulus spatial frequency (SF). I...
s of NIH-Conte Meeting – September 11, 2006 Spiking Neural Circuits for Gaussian Tuning and the Maximum Operation Jake Bouvrie and Ulf Knoblich Massachusetts Institute of Technology In an effort to realize an additional layer of biophysical plausibility in the model, we present preliminary spiking neural circuits which separately implement the maximum operation and an approximation to a normali...
s of NIH-Conte Meeting – August 30, 2004 Position-Specific Tuning for Boundary Conformation in the Standard Model of Object Recognition Charles Cadieu, Tomaso Poggio Massachusetts Institute of Technology The computational processes in the intermediate stages of the ventral pathway for visual object recognition are not well understood. A recent physiological study by A. Pasupathy and C. Connor i...
The control of circadian rhythms in the mammalian brain can be localized to a brain region known as the suprachiasmatic nucleus (SCN). The SCN consists of approximately 20,000 neurons whose firing rates oscillate on an approximately 24 hour rhythm. A large portion of these neurons are capable of maintaining a circadian rhythm in isolation in vitro. The firing rate of each neuron seems to be dri...
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