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    "I spy with my little eye, something that is a face ...": a brain network for illusory face detection

    Thome, I. and Hohmann, D.M. and Zimmermann, K.M. and Smith, Marie L. and Kessler, R. and Jansen, A. (2022) "I spy with my little eye, something that is a face ...": a brain network for illusory face detection. Cerebral Cortex 32 (1), pp. 137-157. ISSN 1047-3211.

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    The most basic aspect of face perception is simply detecting the presence of a face, which requires the extraction of features that it has in common with other faces. Putatively, it is caused by matching high-dimensional sensory input with internal face templates, achieved through a top-down mediated coupling between prefrontal regions and brain areas in the ventral temporal cortex (“core system of face perception”). Illusory face detection tasks can be used to study these top-down influences. In the present functional magnetic resonance imaging study, we showed that illusory face perception activated just as real faces the core system, albeit with atypical left-lateralisation of the occipital face area (OFA). The core system was coupled with two distinct brain regions in the lateral prefrontal (inferior frontal gyrus, IFG) and orbitofrontal cortex (OFC). A Dynamic Causal Modelling (DCM) analysis revealed that activity in the core system during illusory face detection was upregulated by a modulatory face-specific influence of the IFG, not as previously assumed by the OFC. Based on these findings, we were able to develop the most comprehensive neuroanatomical framework of illusory face detection until now.


    Item Type: Article
    Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication following peer review. The version of record is available online at the link above.
    Keyword(s) / Subject(s): Dynamic causal modelling, face detection, functional magnetic resonance imaging, illusion, multivariate pattern analysis
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
    Depositing User: Administrator
    Date Deposited: 07 Jun 2021 15:32
    Last Modified: 02 Aug 2023 18:10


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