University of Cambridge > Talks.cam > Marr Club > Constructing and updating models of the world

Constructing and updating models of the world

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Paula Kaanders.

If you are interested in receiving reminders and further information about Marr Club talks, please sign up to our mailing list ‘psychol-marr-club’ at https://lists.cam.ac.uk/

Complex decisions require an adequate model of the world that needs to be updated in response to changes in the environment. In the first part of the talk, I present data addressing how humans form models of other people’s preferences and integrate this information into an own mPFC value computation. By combining computational and representational fMRI techniques I show that prediction errors caused by learning about the preferences of another individual drive changes in local cortical representations, 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 between objects is stored as a map in the entorhinal cortex. This demonstrates that complex map-like organisations can be reconstructed from entorhinal fMRI responses when relationships are non-spatial rather than spatial, discrete rather than continuous and unavailable to conscious awareness. The representation of abstract knowledge in map-like structures suggests that inferences do not need to rely on experiences but can be computed anew from mapped knowledge.

This talk is part of the Marr Club series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity