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DTSTART:20210328T030000
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DTSTAMP:20260406T024146Z
UID:1620392400@ist.ac.at
DTSTART:20210507T150000
DTEND:20210507T160000
DESCRIPTION:Speaker: Andre Fenton\nhosted by Tim Vogels\nAbstract: Biologic
 al neural networks can represent information in the collective action pote
 ntial discharge of neurons\, and store that information amongst the synapt
 ic connections between the neurons that both comprise the network and gove
 rn its function. The strength and organization of synaptic connections adj
 ust during learning\, but many cognitive neural systems are multifunctiona
 l\, making it unclear how continuous activity alternates between the trans
 ient and discrete cognitive functions like encoding current information an
 d recollecting past information\, without changing the connections amongst
  the neurons. This lecture will first summarize our investigations of the 
 molecular and biochemical mechanisms that change synaptic function to pers
 istently store spatial memory in the rodent hippocampus. I will then repor
 t on how entorhinal cortex-hippocampus circuit function changes during cog
 nitive training that creates memory\, as well as learning to learn in mice
 . I will then describe how the hippocampus system operates like a competit
 ive winner-take-all network\, that\, based on the dominance of its current
  inputs\, self organizes into either the encoding or recollection informat
 ion processing modes. We find no evidence that distinct cells are dedicate
 d to those two distinct functions\, rather activation of the hippocampus i
 nformation processing mode is controlled by a subset of dentate spike even
 ts within the network of learning-modified\, entorhinal-hippocampus excita
 tory and inhibitory synapses.
LOCATION:Online\, ISTA
ORGANIZER:
SUMMARY:Andre Fenton: Memory\, learning to learn\, and control of cognitive
  representations
URL:https://talks-calendar.ista.ac.at/events/3175
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