A model for biological winner-take-all neural competition employing inhibitory modulation of NMDA-mediated excitatory gain
نویسنده
چکیده
In this paper, we consider competitive neural networks with lateral inhibitory feedback. In the feline LGN, lateral inhibition is known to modulate the gain of NMDA-mediated excitation. We formulate a population model for this behaviour in which the excitatory gain of each neuron is modulated as a function of the ratio between current activity and an inhibitory feedback signal. This arrangement gives rise to a highly #exible network capable of contrast independent spatial processing, pattern sparsi"cation, and, in the limit, winner-take-all decision making. ( 1999 Elsevier Science B.V. All rights reserved.
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عنوان ژورنال:
- Neurocomputing
دوره 26-27 شماره
صفحات -
تاریخ انتشار 1999