Trainee Profile

Cassie J. Hilditch, PhD

C_Hilditch 201710 (2).jpg
Research Fellow, Harvard Medical School
Postdoctoral Fellow, Division of Sleep and Circadian Disorders, Department of Medicine, Brigham and Women's Hospital

See publications


Brighaam and Women's Hospital
221 Longwood Avenue, RFB 486
Boston, MA 02115


Society Memberships

Sleep Research Society
Australasian Sleep Association
European Sleep Research Society
Working Time Society

Research Unit(s)

Analytic & Modeling Unit, Division of Sleep Medicine

Research Interests

My research interests center around sleep, fatigue, performance, countermeasures, and safety in shiftwork. I have worked directly with safety-critical industries such as aviation, petrochemical and road transport to better understand and manage the risk of fatigue in these operations. For me, working with industry highlighted the need for academic research with a practical focus. It is this focus that drives my current research interests and endeavours. My PhD thesis explored the impact of sleep inertia in shift work contexts including split duty schedules and napping on night shifts. I am currently investigating the influence of irregular sleep-wake schedules on circadian rhythms, performance, learning, and mood.
I am passionate about translating and communicating laboratory findings to real-world environments and non-academic audiences. Through my work, I hope to develop evidence-based guidance to improve public health, performance, and safety.


Selected Publications

Saletin JM*, Hilditch CJ*, Dement WC,  Carskadon MA. Short daytime naps briefly attenuate objectively measured sleepiness under chronic sleep restriction. Sleep. 2017 Jul; [ePub ahead of print]
*joint first author

Hilditch CJ, Dorrian J, Centofanti SA, Van Dongen HP, Banks S. Sleep inertia associated with a 10-min nap before the commute home following a night shift: A laboratory simulation study. Accid Anal Prev. 2017 Feb;99(Pt B):411-415. [PMID: 26589387]

Centofanti SA, Dorrian J, Hilditch CJ, Banks S. Do night naps impact driving performance and daytime recovery sleep? Accid Anal Prev. 2017 Feb;99(Pt B):416-421. [PMID: 26616017]

Short MA, Centofanti S, Hilditch C, Banks S, Lushington K, Dorrian J. The effect of split sleep schedules (6h-on/6h-off) on neurobehavioural performance, sleep and sleepiness. Appl Ergon. 2016 May;54:72-82. [PMID: 26851466]

Hilditch CJ, Centofanti SA, Dorrian J, Banks S. A 30-Minute, but Not a 10-Minute Nighttime Nap is Associated with Sleep Inertia. Sleep. 2016 Mar 1;39(3):675-85. [PMID: 26715234]

Hilditch CJ, Short M, Van Dongen HP, Centofanti SA, Dorrian J, Kohler M, Banks S. Sleep inertia during a simulated 6-h on/6-h off fixed split duty schedule. Chronobiol Int. 2016;33(6):685-96. [PubMed PMID: 27078176]

Centofanti SA, Hilditch CJ, Dorrian J, Banks S. The impact of short night-time naps on performance, sleepiness and mood during a simulated night shift. Chronobiol Int. 2016;33(6):706-15. [PubMed PMID: 27077524]

Amann U, Holmes A, Caldwell J, Hilditch C. Sleep and sleepiness of pilots operating long-range airplane emergency medical missions. Aviat Space Environ Med. 2014 Sep;85(9):954-9. [PMID: 25197895]

Usmani ZA, Hlavac M, Rischmueller M, Heraganahally SS, Hilditch CJ, Lester S, Catcheside PG, Antic NA, Chai-Coetzer CL, McEvoy RD. Sleep disordered breathing in patients with primary Sjögren's syndrome: a group controlled study. Sleep Med. 2012 Sep;13(8):1066-70. [PMID: 22841036]

Holmes A, Al-Bayat S, Hilditch C, Bourgeois-Bougrine S. Sleep and sleepiness during an ultra long-range flight operation between the Middle East and United States. Accid Anal Prev. 2012 Mar;45 Suppl:27-31. [PubMed PMID: 22239927]

Hilditch CJ, McEvoy RD, George KE, Thompson CC, Ryan MK, Rischmueller M, Catcheside PG. Upper airway surface tension but not upper airway collapsibility is elevated in primary Sjögren's syndrome. Sleep. 2008 Mar;31(3):367-74.
[PMID: 18363313]

Reviews and Book Chapters

Centofanti SA, Dorrian J, Hilditch CJ, Banks S. Sleep disorders and sleep loss: A public health priority – Features and neurocognitive effects. In: Sleep Medicine. Eds. Mansfield DR, Antic N, Rajaratnam S, Naughton MT. 2017 Apr. IP Communications, Vic, Australia.

Hilditch CJ, Dorrian J, Banks S. A review of short naps and sleep inertia: do naps of 30 min or less really avoid sleep inertia and slow-wave sleep? Sleep Med. 2017 Apr;32:176-190. [PMID: 28366332]

Hilditch CJ, Dorrian J, Banks S. Time to wake up: reactive countermeasures to sleep inertia. Ind Health. 2016 Dec 7;54(6):528-541. [PMID: 27193071]

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