Skip to main content
. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Nat Neurosci. 2013 May 19;16(7):974–981. doi: 10.1038/nn.3402

Figure 4.

Figure 4

fMRI responses to naturalistic textures differentiate V2 from V1 in humans. (a) Responses to alternating blocks of naturalistic texture images and spectrally-matched noise shown on a flattened representation of the occipital pole. Color indicates coherence, which captures the extent to which the fMRI responses to naturalistic and noise stimuli differ, computed voxel by voxel after averaging responses to all texture families. White lines indicate boundaries between visual areas identified in an independent retinotopic mapping experiment. (b) A measure of fMRI modulation (see Methods) averaged across voxels and texture families in V1 and V2 for three subjects. Error bars indicate s.e.m. across texture families. (c) Responses from an example subject to two individual texture families, only one of which evoked robust differential responses in V2. Same format as panel a. (d) Correlation between fMRI and single-unit modulation for V1 (green) and V2 (blue). Each data point represents a different texture family.