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UID:DSC-22858
DTSTART;TZID=Europe/Berlin:20260914T153000
SEQUENCE:1787809066
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20260914T163000
URL:https://dresden-science-calendar.org/calendar/de/detail/22858
LOCATION:MPI-PKS\, Nöthnitzer Straße 3801187 Dresden
SUMMARY:Palmer: What to throw away? How brains make efficient codes
CLASS:PUBLIC
DESCRIPTION:Speaker: Dr Stephanie Palmer\nInstitute of Speaker: University 
 of Chicago\nTopics:\nPhysik\n Location:\n  Name: MPI-PKS ()\n  Street: Nö
 thnitzer Straße 38\n  City: 01187 Dresden\n  Phone: + 49 (0)351 871 0\n  
 Fax: \nDescription: Biological systems must selectively encode partial inf
 ormation about the environment\, as dictated by the capacity constraints a
 t work in all living organisms. For example\, we cannot see every feature 
 of the light field that reaches our eyes\; temporal resolution is limited 
 by transmission noise and delays\, and spatial resolution is limited by th
 e finite number of photoreceptors and output cells in the retina. Classica
 l efficient coding theory describes how sensory systems can maximize infor
 mation transmission given such capacity constraints\, but it treats all in
 put features equally. Not all inputs are\, however\, of equal value to the
  organism. Our work quantifies whether and how the brain selectively encod
 es stimulus features\, specifically predictive features\, that are most us
 eful for fast and effective movements. We have shown that efficient predic
 tive computation starts at the earliest stages of the visual system\, in t
 he retina. We borrow techniques from statistical physics and information t
 heory to assess how we get terrific\, predictive vision from these imperfe
 ct (lagged and noisy) component parts. In broader terms\, we aim to build 
 a more complete theory of efficient encoding in the brain\, and along the 
 way have found some intriguing connections between formal notions of coars
 e graining in biology and physics.
DTSTAMP:20260827T081111Z
CREATED:20260424T053631Z
LAST-MODIFIED:20260827T053746Z
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