Figure 1.

Structural Images of Humans without Apparent OBs

(A–D) Coronal T2-weighted MR images (cerebrospinal fluid is white) of (A) a control participant, (B) NAB1, (C) NAB-CA, and (D) NAB2. Control OBs are outlined in yellow; the area of missing OBs is marked with yellow arrows.

(E) Violin plot of OB volume measured in 36 OBs from 18 control participants.

(F) Violin plot of olfactory sulcus depth measured in 36 sulci from 18 control participants. Control participants are in gray, control mean in blue, NAB1 in purple, NAB2 in orange, and NAB-CA in green; error bar is SD. L, left; R, right.

See also Figures S1–S3, S5, and S10–S12.