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SUMMARY:Computational Neuroscience Journal Club - Jascha Achterberg and Kr
 is Jensen
DTSTART:20210309T150000Z
DTEND:20210309T163000Z
UID:TALK157996@talks.cam.ac.uk
CONTACT:Jake Stroud
DESCRIPTION:Please join us for our fortnightly journal club online via zoo
 m where two presenters will jointly present a topic together. The next top
 ic is ‘Abstract representations of task related variables in prefrontal 
 cortex and ANNs’ presented by Jascha Achterberg and Kris Jensen.\n\nZoom
  information:\nhttps://us02web.zoom.us/j/84958321096?pwd=dFpsYnpJYWVNeHlJb
 EFKbW1OTzFiQT09\n\nNeural responses in prefrontal cortex (PFC) have long b
 een known to encode abstract concepts such as ‘task rules’ or ‘conte
 xt’ in addition to lower level representations of e.g. sensory inputs us
 ing mixed selectivity. Recent experimental and computational work suggests
  that the representations of these task related variables are structured i
 n a way that facilitates generalization across tasks. During this journal 
 club\, we will first discuss early evidence of abstract representations in
  PFC and highlight how these link to the current discussion of generalizab
 le task models and meta-reinforcement learning. Then we will present recen
 t work illustrating how those abstract representations support generalizat
 ion across task contexts\, both in the primate brain and ANNs. Finally we 
 will consider evidence that such representations can arise in a delayed re
 sponse task from the computation of a mapping between prospective inputs a
 nd their corresponding outputs during the delay in both humans and RNNs.\n
 \nKey papers:\nBernadi et al.: “The geometry of abstraction in the hippo
 campus and prefrontal cortex”. Cell (2020).\nEhrlich & Murray: “Geomet
 ry of neural computation unifies working memory and planning”. bioRxiv (
 2021).\n
LOCATION:Online on Zoom
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