A network that uses few active neurones to code visual input predicts the diverse shapes of cortical receptive fields
Neurons
0301 basic medicine
0303 health sciences
03 medical and health sciences
Models, Neurological
Animals
Visual Pathways
Neural Networks, Computer
Nerve Net
Visual Fields
Macaca mulatta
Photic Stimulation
Visual Cortex
DOI:
10.1007/s10827-006-0003-9
Publication Date:
2006-10-11T16:38:57Z
AUTHORS (2)
ABSTRACT
Computational models of primary visual cortex have demonstrated that principles of efficient coding and neuronal sparseness can explain the emergence of neurones with localised oriented receptive fields. Yet, existing models have failed to predict the diverse shapes of receptive fields that occur in nature. The existing models used a particular "soft" form of sparseness that limits average neuronal activity. Here we study models of efficient coding in a broader context by comparing soft and "bard" forms of neuronal sparseness. As a result of our analyses, we propose a novel network model for visual cortex. The model forms efficient visual representations in which the number of active neurones, rather than mean neuronal activity, is limited. This form of hard sparseness also economises cortical resources like synaptic memory and metabolic energy. Furthermore, our model accurately predicts the distribution of receptive field shapes found in the primary visual cortex of cat and monkey.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (49)
CITATIONS (136)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....