Oliver G. Wenisch

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A model for the development of spatiotemporal receptive fields of simple cells in the visual cortex is proposed. The model is based on the 1990 hypothesis of Saul and Humphrey that the convergence of four types of input onto a cortical cell, viz. non-lagged ON and OFF inputs and lagged ON and OFF inputs, underlies the spatial and temporal structure of the(More)
It is still an open question as to whether, and how, direction-selective neuronal responses in primary visual cortex are generated by feedforward thalamocortical or recurrent intracortical connections, or a combination of both. Here we present an investigation that concentrates on and, only for the sake of simplicity, restricts itself to intracortical(More)
In part I of this article a correlation based model for the developmental process of spatiotemporal receptive fields has been introduced. In this model the development is described as an activity-dependent competition between four types of input from the lateral geniculate nucleus onto a cortical cell, viz. non-lagged ON and OFF and lagged ON and OFF(More)
We propose a linear Hebbian model that describes the development of spatiotemporal receptive elds as a competition between four types of input onto a cortical cell, viz., non-lagged ON and OFF inputs and lagged ON and OFF inputs. The outcome of the development is determined mainly by the spatial and the temporal correlations between the diierent inputs. We(More)
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