Fig 2.

Rhinological data and nasal endoscopic measurements. (a–d) Data from one representative subject. Acoustic rhinometry of the right (a) and left (c) internal nasal cavities revealed considerable uniformity in airway area and volume from pre to post-deprivation. Each rhinogram trace is an average of 10 consecutive measurements and depicts cross-sectional area as a function of distance from nostril entrance (at 0cm). Arrows mark approximate regions of nasal valve (NV), anterior parts of inferior and middle turbinates (AT), and mid-posterior part of middle turbinate (PT). Nasal endoscopy of the right (b) and left (d) nasal cavities immediately after deprivation revealed healthy tissue without rhinitis or edema. (e–g) Group-averaged endoscopic measurements (mean ± s.e.m.) from 11 subjects show that odor deprivation had no effect on the average space between (e) the inferior turbinate and septum and (f) between the middle turbinate and septum from 11 subjects as observed during nasal endoscopy observation on each testing session. (g) Group-averaged acoustic rhinometric measurements of internal nasal volume (between 1–5cm from the nostril entrance; average of 10 consecutive measurements per subject) also show no significant differences across testing days. I, inferior turbinate; M, medial turbinate; S, septum. Measurements shown in e–g were averaged across both nostrils.