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- supplemental material - Supplementary Figure 1. Polar angle component of retinotopic maps (right hemispheres). Cortical representation of visual polar angle displayed on computationally unfolded and flattened patches ("flat maps") of the right hemisphere occipital cortex of all 15 individual subjects. Color indicates polar angle (see Fig. 1 legend) of voxels with response coherence>0.25 (see Methods). Solid white lines indicate the boundaries between areas V1, V2v/d, V3v/d, hV4, V3A/B, LO1, and LO2, identified by the automated atlas fitting procedure (see Methods). Black contours indicate borders of functionally defined area V5/MT+, identified in a subset of subjects. Although the maps from each hemisphere differ from one another in detail, the same pattern of reversals at the horizontal and vertical meridian representations is evident in the majority of the hemispheres. In the 8 hemispheres indicated by two asterisks (**) (S1, S3, S4, S5, S8, S9, S13, and S15), the visual field representations in LO1 and LO2 corresponded to full hemifields. In the 5 hemispheres indicated by a single asterisk (*) (S6, S7, S10, S11, and S12), the visual field representations in these areas were closer to quadrants. In the remaining right hemispheres, the visual topography of LO1 and/or LO2 was too indistinct to infer the extent of visual field coverage.
- supplemental material - Supplementary Figure 2. Radial component of retinotopic maps (right hemispheres). Cortical representation of visual eccentricity for the same hemispheres shown in supplementary Fig. 1. Details as in supplementary Fig. 1, except colors indicate eccentricity between 0-6 deg (see Fig. 1 legend).
- supplemental material - Supplementary Figure 3. Polar angle component of retinotopic maps (left hemispheres). Same format as supplementary Fig. 1. Full hemifields in LO1 and LO2 were evident in the 6 hemispheres indicated by two asterisks (**) (S1, S2, S5, S8, S9, S15). In 4 hemispheres, indicated by a single asterisk (*), (S3, S4, S6, and S7), the visual field representations in these areas were closer to quadrants. In the remaining left hemispheres, the visual topography of LO1 and/or LO2 was too indistinct to infer the extent of visual field coverage.
- supplemental material - Supplementary Figure 4. Radial component of retinotopic maps (left hemispheres). Same format as supplementary Fig. 2.
- supplemental material - Supplementary Figure 5. Atlas fitting procedure. A. Atlas polar angle template for V1, V2v/d, V3v/d, hV4, LO1, and LO2 in atlas space (atlas templates for V3A/B not shown). Black lines, boundaries between visual areas. Color indicates polar angle (same scale as Fig. 8B). Maroon symbols (arrows and asterisk) indicate corresponding points in panels A-F. Note that part of the posterior boundary of the V3A/B template maps corresponds to the bifurcating vertical meridian representation extending from the anterior boundary of V3d. Because of this, the template maps for V3A/B do not directly adjoin the template maps of LO1/LO2, resulting in an apparent cut in the template maps between these areas. B. Atlas eccentricity templates for V1, V2v/d, V3v/d, hV4, LO1, and LO2 in atlas space. Color indicates eccentricity between 1-6 degrees (same scale as Fig. 8A). C. Atlas polar angle templates for V1, V2v/d, V3v/d, hV4, V3A/B, LO1, and LO2 coarsely aligned to right hemisphere data of subject S1. Color scale as in A. D. Atlas eccentricity templates for V1, V2v/d, V3v/d, hV4, LO1, and LO2 coarsely aligned to right hemisphere data of subject S1. Note that no eccentricity template was used for V3A/B. Color scale as in B. E. Atlas polar angle templates elastically deformed to right hemisphere data of subject S1. Black lines show fitted area boundaries. Color scale as in A. F. Atlas eccentricity templates elastically deformed to right hemisphere data of subject S1. Black lines show fitted area boundaries. Color scale as in B.
- supplemental material - Supplementary Figure 6. Root mean square (RMS) errors of the atlas fits for each visual area. Blue bars, full hemifield model. Red, quadrant model. Note that predictions of the quadrant and hemifield models differ only in LO1 and LO2, hence the other visual areas are represented by gray bars. Asterisk indicates significant difference (paired t-test, d.f.=29, P <_0.01 between="between" the="the" two="two" model="model" fits.="fits." error="error" bars="bars" standard="standard" of="of" mean="mean" across="across" _30="_30" hemispheres.="hemispheres." _--="_--" end="end" desc="desc" sfig6_revisedjn.gif="sfig6_revisedjn.gif">
- supplemental material - Supplementary Figure 7. Correlation between visual area size and range of polar angle representation in LO1 (left panel) and LO2 (right panel) across hemispheres. Abscissa, surface area (mm2) estimated by atlas fitting procedure (see Methods for details). Ordinate, range of polar angles represented within each area, calculated from the mean transect plots in Fig. 8. Lines, least squares fits to the data. If the spatial blurring due to the small size of LO1 and/or LO2 were responsible for reduced range of polar angles in these areas, relative to a full hemifield, one would expect a positive correlation between area size and the range of polar angle representation within each area. For LO1, the correlation was highly significant (R=0.62, P <_0.001. for="for" lo2="lo2" the="the" correlation="correlation" showed="showed" only="only" a="a" non-significant="non-significant" trend="trend" r="0.38," p0.1="p0.1" although="although" reached="reached" significance="significance" p0.05="p0.05" after="after" removal="removal" of="of" two="two" most="most" outlying="outlying" hemispheres="hemispheres" indicated="indicated" in="in" red.="red." note="note" that="that" if="if" lo1="lo1" and="and" each="each" contained="contained" quadrant="quadrant" representation="representation" then="then" this="this" relationship="relationship" between="between" area="area" size="size" polar="polar" angle="angle" range="range" should="should" hold="hold" ranges="ranges" smaller="smaller" than="than" quadrant.="quadrant." figure="figure" shows="shows" however="however" holds="holds" over="over" much="much" larger="larger" range.="range." these="these" results="results" are="are" thus="thus" consistent="consistent" with="with" full="full" hemifield="hemifield" not="not" representations="representations" lo2.="lo2." _--="_--" end="end" desc="desc" sfig7_revisedjn.gif="sfig7_revisedjn.gif">