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ANC/DTC Seminar: Michael Spratling, King's College London (Host: Mark van Rossum)

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A Single Functional Model of Primary Visual Cortex

What
  • ANC/DTC Seminar
When Apr 23, 2013
from 11:00 AM to 12:00 PM
Where IF 4.31/4.33
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PC/BC is a model of cortical function that has been inspired by both the predictive coding and biased competition theories, and is also closely related to several other models such as efficient coding, the normalisation model, linear generative models, and non-negative matrix factorisation. In this talk I'll show that PC/BC can successfully simulate a wide range of neurophysiological data recorded in primary visual cortex (relating to orientation tuning, size tuning, spatial and temporal frequency tuning, cross-orientation and surround suppression), and hence, provides a single computational explanation for the seemingly diverse range of behaviours observed in V1. I'll also show that the same model can simulate psychophysical data relating to visual saliency (of unique items in search arrays, of contours embedded in random texture, and of borders between textured regions), and hence, also provides a possible implementation of the hypothesis that V1 generates a bottom-up saliency map.