Bayesian inference using a norm based face coding scheme in humans (360G-Wellcome-094792_Z_10_Z)
Recently large amounts of evidence have accrued suggesting that the human brain often supports optimal Bayesian inference, but it has not been shown that this is so in face recognition. In parallel a leading hypothesis for the encoding of faces is the so-called norm coding scheme, whereby each face is defined by its position in face-space. In face-space the average face sits at the origin, and, in a Bayesian interpretation of inference in this context, the peak of the prior probability distribution should correspond to this rather than another face. By using a multivariate analysis, sensitive to the fine structure of fMRI responses, we hope to characterise these implicit probability distributions inthe aIT (anterior inferotemporal cortex) of human subjects, and show that whensubjects hallucinate a face in noisy stimuli this is the average face ratherthan another. This supports a Bayesian interpretation of the norm based scheme, since otherwise any face might be hallucinated . Finally, we aim to show that while face and anti-face (its opposite in face space) can be differentiated in aIT (the face identifier), this cannot be donein the fusiform face area (the face detector).
Where is this data from?
This data was originally published by The Wellcome Trust. If you see something about your organisation or the funding it has received on this page that doesn't look right you can submit a grantee amendment request. You can hover over codes from standard codelists to see the user-friendly name provided by 360Giving.
Grant Details
Amount Awarded | 259443 |
Applicant Surname | O'Keeffe |
Approval Committee | Neurosciences And Mental Health |
Award Date | 2010-09-21T00:00:00+00:00 |
Financial Year | 2009/10 |
Grant Programme: Title | PhD Training Fellowship for Clinicians |
Internal ID | 094792/Z/10/Z |
Lead Applicant | Dr Jonathan O'Keeffe |
Partnership Value | 259443 |
Planned Dates: End Date | 2014-09-30T00:00:00+00:00 |
Planned Dates: Start Date | 2010-10-01T00:00:00+00:00 |
Recipient Org: Country | United Kingdom |
Region | East of England |
Sponsor(s) | Prof David Lomas, Prof Krishna Chatterjee |