Reference : From coarse to fine? Spatial and temporal dynamics of cortical face processing
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
Social & behavioral sciences, psychology : Theoretical & cognitive psychology
From coarse to fine? Spatial and temporal dynamics of cortical face processing
Goffaux, Valerie []
Peters, Judith []
Haubrechts, Julie []
Schiltz, Christine mailto [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Educational Measurement and Applied Cognitive Science (EMACS) >]
Jansma, Bernadette []
Goebel, Rainer []
Cerebral Cortex
Oxford University Press
Yes (verified by ORBilu)
[en] coarse-to-fine ; exposure duration ; face perception ; fMRI ; spatial frequency
[en] Primary vision segregates information along 2 main dimensions: orientation and spatial frequency (SF). An important question is how this primary visual information is integrated to support high level representations. It is generally assumed that the information carried by different SF is combined following a coarse-to-fine sequence. We directly addressed this assumption by investigating how the network of face-preferring cortical regions processes distinct SF over time. Face stimuli were flashed during 75, 150, or 300 ms and masked. They were filtered to preserve low SF (LSF), middle SF (MSF), or high SF (HSF). Most face-preferring regions robustly responded to coarse LSF, face information in early stages of visual processing (i.e., until 75 ms of exposure duration). LSF processing decayed as a function of exposure duration (mostly until 150 ms). In contrast, the processing of fine HSF, face information became more robust over time in the bilateral fusiform face regions and in the right occipital face area. The present evidence suggests the coarse-to-fine strategy as a plausible modus operandi in high level visual cortex.

File(s) associated to this reference

Fulltext file(s):

Limited access
GoffauxPetersHaubrechtsSchiltzJansmaGoebel_CC_11_(FacefMRI).pdfPublisher postprint817.24 kBRequest a copy

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.