Effects of hormone treatment, brain region, song type, scan number and hormone treatment x song type interactions on 18F-fluorodeoxyglucose standardized uptake values (SUV) in female house sparrow brain (Passer domesticus).

Results are from linear mixed models with individual bird as a random effect. To account for differences in plasma glucose concentrations and injection efficiency, we also performed analyses on glucose-normalized and lung-normalized SUV. See text for more details on normalization. Significant model effects are in bold.