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SUMMARY:Computational Neuroscience Journal Club - Dr Theoklitos Amvrosiadi
 s\, Puria Radmard
DTSTART:20231121T140000Z
DTEND:20231121T150000Z
UID:TALK208762@talks.cam.ac.uk
CONTACT:Puria Radmard
DESCRIPTION:Please join us for our fortnightly Computational Neuroscience 
 journal club on Tuesday 21st November at 2pm UK time in the CBL seminar ro
 om\, or online on zoom.\n\nThe title is ‘Systems Consolidation’\, pres
 ented by Theoklitos Amvrosiadis and Puria Radmard.\n\nZoom information: ht
 tps://eng-cam.zoom.us/j/84204498431?pwd=Um1oU284b1YxWThObGw4ZU9XZitWdz09 M
 eeting ID: 842 0449 8431 Passcode: 684140\n\nSummary:\n\nIn this talk\, Th
 eo will give an in depth summary of Sun et al.\, 2023: “Organizing memor
 ies for generalization in complementary learning systems”\, published in
  Nature Neuroscience\, after Puria introduces some of the key concepts for
  a background understanding. \n\nAbstract for Sun et al.\, 2023:\n"Memoriz
 ation and generalization are complementary cognitive processes that jointl
 y promote adaptive behavior. For example\, animals should memorize safe ro
 utes to specific water sources and generalize from these memories to disco
 ver environmental features that predict new ones. These functions depend o
 n systems consolidation mechanisms that construct neocortical memory trace
 s from hippocampal precursors\, but why systems consolidation only applies
  to a subset of hippocampal memories is unclear. Here we introduce a new n
 eural network formalization of systems consolidation that reveals an overl
 ooked tension—unregulated neocortical memory transfer can cause overfitt
 ing and harm generalization in an unpredictable world. We resolve this ten
 sion by postulating that memories only consolidate when it aids generaliza
 tion. This framework accounts for partial hippocampal–cortical memory tr
 ansfer and provides a normative principle for reconceptualizing numerous o
 bservations in the field. Generalization-optimized systems consolidation t
 hus provides new insight into how adaptive behavior benefits from compleme
 ntary learning systems specialized for memorization and generalization."
LOCATION:CBL Seminar Room\, Engineering Department\, 4th floor Baker build
 ing
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