The name is absent

24

sulcal depth index derived from the distance of each node from the brain's bounding
ellipsoid (Van Essen 2004).

Identified visual areas

To locate area MT and MST, anatomical and functional criteria were used
(Beauchamp, et al. 1997; Beauchamp, et al. 2001; Dumoulin, et al. 2000; Huk, et al.
2002; Tootell, et al. 1995). First, an MT+ region of interest (ROI) was created containing
voxels showing a significant response to left or right hemifield stimulation (p<10^⁶) in the
ascending portion of posterior inferior temporal sulcus (plTS). Second, contiguous voxels
that showed no significant response to ipsilateral visual stimulation (p<0.05) were
classified as MT; these voxels were concentrated on the posterior bank of the plTS in
the posterior and ventral portion of the MT+ ROl. Contiguous voxels that showed a
significant response to ipsilateral visual stimulation (p < 0.05) Were classified as MST;
these voxels were concentrated on the anterior bank of the plTS. To locate the LOC,
voxels showing a significant response to real or scrambled photographs (p<10^⁶) were
identified, followed by a second stage of thresholding to find only voxels with a
significant (p<0.05) preference for real versus scrambled photographs (Beauchamp
2005b; Grill-Spector, et al. 2001). All active voxels directly adjacent to the Iocalizer
defined visual regions (i.e., within 3 mm) were included in the ROI under the assumption
that these were likely to represent regions of MT, MST, or LOC not mapped by the
Iocalizer because they represented peripheral parts of the visual field not accessible
Withourvisualstimulationapparatus.

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