University of Cambridge > Talks.cam > Inference Group > Deducing Principles in Natural Perception

  Browse A-Z

Log in

Cambridge users (raven)details Other usersdetails No account?details

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

Deducing Principles in Natural Perception

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact David MacKay.

What are the underlying computational principles that biology uses to transform the raw sensory signal into a hierarchy of representations that subserve higher-level perceptual tasks? One hypothesis is that biological representations are optimal from the viewpoint of statistical information processing, and are adapted to the statistics of the natural sensory environment. In the initial stages of sensory coding, information has to be coded in a way that makes best use of the available resources. I will show how the optimal solution to coding natural images with a population of noisy neurons predicts many properties of retinal coding. I will also show that the same approach can be applied to natural sounds to explain many aspects of the auditory code at the cochlear nerve. Finally, I will present work that extends this general principle to higher levels of visual processing. I will show that efficient representations of the statistics of local image regions can form stable, invariant representations of edges, contours, and textures. These results also provide a novel functional explanation for non-linear effects of complex cells in the primary visual cortex.

This talk is part of the Inference Group series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

‘Geographies of Radical Difference’ Representational Similarity Analysis Cambridge Linguistics Forum

Other talks

How to Deploy Psychometrics Successfully in an Organisation St Johns Linacre Lecture 2018: Professor Sir Peter Ratcliffe FRS Cellular recycling: role of autophagy in aging and disease Intelligence and the frontal lobes Curve fitting, errors and analysis of binding data Sacred Mountains as Flood Refuge Sites in Northwest North America “Modulating Tregs in Cancer and Autoimmunity” Scale and anisotropic effects in necking of metallic tensile specimens Thermodynamics de-mystified? /Thermodynamics without Ansätze? A feast of languages: multilingualism in neuro-typical and atypical populations 'Ways of Reading, Looking, and Imagining: Contemporary Fiction and Its Optics' The Warsaw Uprising in Polish Popular Culture after 1989
 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity