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. 2021 Jul 15;15(6):949–959. doi: 10.1007/s11571-021-09687-w

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© The Author(s) 2021

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Fig. 3 — The superfeminine (blue) and supermasculine (red) edges, and the switching edge (purple). If the fiber numbers of both the blue edge and the purple edge are high, then the subject is female. If the fiber number of both the red edges are high and the purple edge is low, then the subject is male, independently of the fiber numbers of the other edges. (Color figure online)