Author

Caleb I Hodges

University of Colorado Boulder

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Animal Behavior & Cognition· 2

Signature Assays, Organisms & Methods

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Organism:rat· 2 Approach:experimental assay· 1 Approach:statistical model· 1

Frequent Co-Authors

Eamonn P. DuffyiD· 2 shared Laura M. SabaiD· 2 shared Luanne H. Hale· 2 shared Marissa A. EhringeriD· 2 shared Ryan K. BachtelliD· 2 shared Cove Andrews· 1 shared Jonathan O Ward· 1 shared Jonathon O. Ward· 1 shared

Activity by Year

2026-2026 · peak 2/yr

Co-Author Collaboration Network

9 top collaborators · 32 mutual co-author links

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2 shared papersAnimal Behavior & Cognition

Eamonn P. DuffyORCID

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2 papers

Recent·Most cited

Genetic Modulation of Oxycodone Self-Administration Trajectories: From Initiation to Escalating Burst Patterns

Caleb I Hodges, Eamonn P. Duffy, Jonathan O Ward, Luanne H. Hale, Cove Andrews, Laura M. Saba, Marissa A. Ehringer, Ryan K. Bachtell

This study identifies strain-dependent genetic influences on oxycodone self-administration patterns in rats, revealing differences in acquisition, escalation, and burst-like responding.

Frontiers in Behavioral Neuroscience · Aug 28, 2026Peer-reviewedAnimal Behavior & Cognition

Voluntary oxycodone self-administration produces analgesic tolerance and sex-dependent hyperalgesia across genetically diverse rats

Tolulope J. Ajanaku, Eamonn P. Duffy, Jonathon O. Ward, Luanne H. Hale, Caleb I Hodges, Laura M. Saba, Marissa A. Ehringer, Ryan K. Bachtell

This study shows that voluntary oxycodone self-administration in rats leads to analgesic tolerance and sex-dependent hyperalgesia, with genetic strain differences in thermal sensitivity and analgesic response.

bioRxiv · Aug 25, 2026 · PreprintAnimal Behavior & Cognition