Figure 8.

Spatiotemporal clustering of word- and face-selective regions. A, Spatiotemporal clustering of word-selective VTC electrodes. The illustrated clustering solution was robust to different weightings of spatial and temporal information. Left hemisphere word-selective electrodes were clustered into four spatial clusters. A cluster was found on the fusiform gyrus (gray, 21 electrodes from 5 participants), as well as medial (green, 20 electrodes from 10 participants), anterior (blue, 11 electrodes from 5 participants), and lateral (red, 12 electrodes from 7 participants) to the fusiform gyrus. Right hemisphere word-selective regions had later onsets and were more clearly separated along the posterior to anterior axis (posterior: cyan; 8 electrodes from 4 participants, mid: yellow; 8 electrodes from 3 participants, anterior: magenta; 7 electrodes from 6 participants). B, Average d′ time course of each group of electrodes in A when jointly classifying stP and stHFBB. Error bars indicate SE across electrodes. C, Average d′ time course of each group of electrodes when classifying only stP. D, Average d′ time course of each electrode when classifying only stBB. Word-selective electrodes on the fusiform demonstrate strong selectivity in both stP and stHFBB, whereas other regions display distinct dynamics across these signal components. E, Spatiotemporal clustering of face-selective VTC electrodes. Left hemisphere electrodes were clustered into three spatial clusters roughly posterior to (green, 21 electrodes from 3 participants), on (gray, 46 electrodes from 12 participants), and anterior to the fusiform gyrus (blue, 13 electrodes from 7 participants). Right hemisphere, face-selective electrodes were primarily clustered along the posterior to anterior VTC axis into four clusters (posterior: cyan; 9 electrodes from 5 participants, mid: yellow; 13 electrodes from 6 participants, and black; 3 electrodes from 2 participants, anterior: magenta; n = 3 electrodes from 3 participants). F, Average d′ time course of each group of electrodes illustrated in E when jointly classifying stP and stHFBB. G, Average d′ time course of each group of electrodes when classifying only stP. H, Average d′ time course of each group of electrodes when classifying only stBB. Face-selective electrodes on the fusiform demonstrate strong selectivity in both stP and stHFBB, whereas other regions display distinct dynamics across these signal components.