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Chen, Kao & Tyler (2007, Cerebral Cortex). Faces from the FERET database, filtered in a 4 th -power Gaussian aperture and normalized to the full contrast.

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Presentation on theme: "Chen, Kao & Tyler (2007, Cerebral Cortex). Faces from the FERET database, filtered in a 4 th -power Gaussian aperture and normalized to the full contrast."— Presentation transcript:

1 Chen, Kao & Tyler (2007, Cerebral Cortex)

2 Faces from the FERET database, filtered in a 4 th -power Gaussian aperture and normalized to the full contrast range

3 Scrambling the phase destroys the local features global structure but retains the Fourier energy and net activation of linear receptive fields

4 Zeroing the phase and reflecting destroys the local features global structure but retains the symmetry as well Fourier energy and net linear RF activation

5 Rotating the face varies the local features and Fourier energy, but retains individuality and emotional recognition

6 Inverting the face retains all the local features and Fourier energy, but reduces individuality and emotional recognition

7 Symmetry vs. random activation pattern Activation in mid-lateral occipital regions (replication of Tyler et al., 2005, NeuroImage) vs. L R Coherence Threshold V1-3 Motion ODS(KO) Symmetry

8 vs. Face Localizer Faces vs. random activate both ventral and dorsal regions of lateral occipital cortex Coherence Threshold L R V1-3 Motion ODS(KO) Symmetry Occipital face area Fusiform face area IOS depth?

9 LR L vs. Symmetry Occipital face area Fusiform face area IOS component 3D Pose Invariance Ventral face areas are pose-blind, but dorsal symmetry areas are activated

10 vs. L LR Symmetry Occipital face area Fusiform face area IOS component Facial Inversion Effect Inverting these full-cue faces shows a large facial inversion effect in both ventral and dorsal regions


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