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SUMMARY:<b>Gating Multiple Signals through Detailed Balance of Excitation 
 and Inhibition in Spiking Networks</b>
DTSTART:20091113T121500
DTSTAMP:20260510T053721Z
UID:095b544b8008e7009c73ccd724e4c438a4263b4a03bfd1711b80e807
CATEGORIES:Conferences - Seminars
DESCRIPTION:Tim Vogels\, Columbia University\, Biological Sciences\nCognit
 ive processing involves communication both within and between brain region
 s and requires precise dynamic control over which sub- circuits respond at
  any given time.  Although considerable work has been done on signal propa
 gation in networks\, it is still unclear how propagation is gated to contr
 ol the flow of information between specific sub-regions.\n\nExtensive work
  has shown that neurons often receive globally balanced levels of excitato
 ry and inhibitory synaptic input that roughly cancel each other. We extend
  this idea to what we call "detailed balance"\, meaning that the levels of
  excitation and inhibition along specific signaling pathways are similarly
  balanced. While in the default state\, signals fail to propagate because 
 of cancellation between excitation and inhibition generated in the target 
 region for each signaling pathway\, but signal flow can be turned on by sp
 oiling this balance. Further\, it is possible to individually gate multipl
 e signals streams within a single gating node\, creating a biologically pl
 ausible neuronal multiplexer and raising the possibility of dynamically ch
 anging the functional architecture of a neuronal network.
LOCATION:BC 01 https://plan.epfl.ch/?room==BC%2001
STATUS:CONFIRMED
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