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Self-Organization of Spatiotemporal Receptive Fields and Laterally Connected Direction and Orientation Maps (2003)
James A. Bednar
and
Risto Miikkulainen
Studies of orientation maps in primary visual cortex (V1) suggest that lateral connections mediate competition and cooperation between orientation-selective units, but their role in motion perception has not been established. Using a self-organizing model of V1 with moving oriented patterns, we show that (1) afferent weights of each neuron organize into Gabor-like spatiotemporal receptive fields with ON and OFF lobes, (2) these receptive fields form realistic joint direction and orientation maps, and (3) lateral connections develop between patches with similar orientation and direction preferences. These results suggest that a single self-organizing system may underlie the development of orientation selectivity, direction selectivity, and lateral connectivity.
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Citation:
In
Computational Neuroscience: Trends in Research, 2003
, 52--54, 473-480, 2003.
Bibtex:
@Article{bednar:neurocomputing03, title={Self-Organization of Spatiotemporal Receptive Fields and Laterally Connected Direction and Orientation Maps}, author={James A. Bednar and Risto Miikkulainen}, booktitle={Computational Neuroscience: Trends in Research, 2003}, volume={52--54}, journal={Neurocomputing}, pages={473-480}, url="http://nn.cs.utexas.edu/?bednar:neurocomputing03", year={2003} }
People
James A. Bednar
Postdoctoral Alumni
jbednar [at] inf ed ac uk
Risto Miikkulainen
Faculty
risto [at] cs utexas edu
Projects
Self-Organization of Directional Selectivity
1999 - 2002
Areas of Interest
Visual Cortex
Computational Neuroscience