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SUMMARY:LCN Seminar: Efficient Coding and Balanced Networks:  A Unificatio
 n
DTSTART:20131205T133000
DTSTAMP:20260408T085654Z
UID:ca894c9703323e545d1379c29429c6de36316d5d9401d5d89f9d84a0
CATEGORIES:Conferences - Seminars
DESCRIPTION:Christian MACHENS\, Champalimaud Neuroscience Programme\, Lisb
 on\, Portugal\nThe principle of efficient coding has been quite successful
  in explaining the tuning of neurons to sensory stimuli across a diversity
  of systems (e.g. work by Olshausen & Field\, Smith & Lewicki\, Salinas\, 
 among others). Balanced networks have been successful in providing mechani
 stic explanations for the irregularity of firing in neural systems\, and h
 ave led to the subsequent experimental verification of a balance between i
 nhibitory and excitatory conductances (e.g. work by Shadlen & Newsome\, va
 n Vreeswijk & Sompolinksy\, Brunel\, etc.)\nWe here show that both theorie
 s can be derived from a single principle: efficient coding with spikes. Th
 e unification require some modifications and reinterpretations\, which we 
 will discuss\, and has several implications. Specifically\, we will show t
 hat our theory predicts instantaneous changes in the tuning of neurons whe
 n part of a circuit is perturbed or knocked out\, leading to an immediate 
 restoration of function. The limits of this restoration depend on the natu
 re of the disruption.\n[Joint work with David Barrett and Sophie Deneve.]
LOCATION:SG0213 http://plan.epfl.ch/?room=sg0213
STATUS:CONFIRMED
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