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SUMMARY:Constructing and updating models of the world - Mona Garvert\, Uni
 versity College London
DTSTART:20160620T131500Z
DTEND:20160620T141500Z
UID:TALK66519@talks.cam.ac.uk
CONTACT:Paula Kaanders
DESCRIPTION:Complex decisions require an adequate model of the world that 
 needs to be updated in response to changes in the environment. In the firs
 t part of the talk\, I present data addressing how humans form models of o
 ther people's preferences and integrate this information into an own mPFC 
 value computation. By combining computational and representational fMRI te
 chniques I show that prediction errors caused by learning about the prefer
 ences of another individual drive changes in local cortical representation
 s\, resulting in a change in subjects´ own preference. In the second part
  of the talk\, I show that a newly learnt model of the relationships betwe
 en objects is stored as a map in the entorhinal cortex. This demonstrates 
 that complex map-like organisations can be reconstructed from entorhinal f
 MRI responses when relationships are non-spatial rather than spatial\, dis
 crete rather than continuous and unavailable to conscious awareness. The r
 epresentation of abstract knowledge in map-like structures suggests that i
 nferences do not need to rely on experiences but can be computed anew from
  mapped knowledge.
LOCATION:Kenneth Craik Room\, Craik Marshall Building\, Downing Site\, Cam
 bridge
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