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SUMMARY:Computational Neuroscience Journal Club - Timothy O'Leary (Control
  Group)
DTSTART:20170711T150000Z
DTEND:20170711T160000Z
UID:TALK73411@talks.cam.ac.uk
CONTACT:Daniel McNamee
DESCRIPTION:Timothy O'Leary will cover:\n\n* Flexible information routing 
 by transient synchrony\n* Agostina Palmigiano\, Theo Geisel\, Fred Wolf\, 
 Demian Battaglia\n* Nature Neuroscience (May 2017)\n* http://www.nature.co
 m/neuro/journal/v20/n7/full/nn.4569.html\n\nAbstract:\nPerception\, cognit
 ion and behavior rely on flexible communication between microcircuits in d
 istinct cortical regions. The mechanisms underlying rapid information rero
 uting between such microcircuits are still unknown. It has been proposed t
 hat changing patterns of coherence between local gamma rhythms support fle
 xible information rerouting. The stochastic and transient nature of gamma 
 oscillations in vivo\, however\, is hard to reconcile with such a function
 . Here we show that models of cortical circuits near the onset of oscillat
 ory synchrony selectively route input signals despite the short duration o
 f gamma bursts and the irregularity of neuronal firing. In canonical multi
 area circuits\, we find that gamma bursts spontaneously arise with matched
  timing and frequency and that they organize information flow by large-sca
 le routing states. Specific self-organized routing states can be induced b
 y minor modulations of background activity.
LOCATION:Cambridge University Engineering Department\, CBL\, BE-438 (http:
 //learning.eng.cam.ac.uk/Public/Directions)
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