ArticleScientific reports2025
Dogs' olfactory resting-state functional connectivity is modulated by age and brain shape.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Canine "Sniffin' Sticks" enable behavioural olfactometry to complement neurological examination in dogs.Scientific reports · 2026Article
- Reliability, repeatability, and age associations of the dogSIT (dog Smell Interaction Test) battery in untrained companion dogs (Canis lupus familiaris).Scientific reports · 2026Article
- Evaluating effects of aging on dog olfactory performance.GeroScience · 2026Article
- The Role of Olfaction in Dogs: Evolution, Biology, and Human-Oriented Work.Animals : an open access journal from MDPI · 2026Review
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Authors and funding
8 authors.
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Abstract
Humans have long applied canine olfaction in various contexts. Dog olfactory brain networks have recently been mapped by anatomical measures, but functional connections remain unexplored. Also, whereas individual characteristics, including age, sex, and brain shape, are known to affect olfactory performance, their covariation with olfactory functional networks is unknown. To address these, we investigated dogs' resting-state functional connectivities between anatomically defined olfactory regions and assessed whether and how their olfactory functional network is affected by age, sex, and brain shape. Olfactory functional connectivity strength exhibited negative correlations with both age and brain shape: older dogs and those with rounder-shaped brains demonstrated lower functional connectivity, respectively, but no effect of sex was found. The results suggest that both aging and brain morphology can negatively impact a dog's sense of smell, and older dogs and dogs with rounder-shaped brains may have diminished olfactory performance.
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