Mechanisms of Feature Selectivity and Invariance in Primary Visual Cortex.
Ali Almasi, Hamish Meffin, Shaun L Cloherty, Yan Wong, Molis Yunzab, Michael R Ibbotson
Cerebral Cortex | Oxford University Press (OUP) | Published : 2020
Visual object identification requires both selectivity for specific visual features that are important to the object's identity and invariance to feature manipulations. For example, a hand can be shifted in position, rotated, or contracted but still be recognized as a hand. How are the competing requirements of selectivity and invariance built into the early stages of visual processing? Typically, cells in the primary visual cortex are classified as either simple or complex. They both show selectivity for edge-orientation but complex cells develop invariance to edge position within the receptive field (spatial phase). Using a data-driven model that extracts the spatial structures and nonline..View full abstract
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Awarded by Australian Research Council
Awarded by National Health and Medical Research Council
This work was supported by the Australian Research Council Centre of Excellence for Integrative Brain Function (CE140100007), the National Health andMedical Research Council (GNT1106390), and Lions Club of Victoria. AA, HM and MI would like to thank Anthony Burkitt and Colin Clifford for their valuable comments on the manuscript. Conflict of Interest: The authors declare no conflict of interests.