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Personal profile

Research interests

Dr. Julio Fernandez-Mendoza's research focuses on the relationship between disturbed and insufficient sleep with cardiometabolic, neurocognitive and psychopathologic morbidity and mortality. He is examining these relationships in population-based cohorts of young children, adolescents and adults studied in the sleep lab and at home. His overarching goal is to better understand the maturational trajectories, natural course and associated health outcomes of normal and inadequate sleep and improve the phenotyping of its heterogeneous disorders, particularly insomnia and sleep apnea. His research relies on both subjective and objective methods and techniques such as standardized neurocognitive testing, polysomnography, spectral/FFT analysis, ambulatory actigraphy and inflammatory, stress, metabolic and sleep EEG biomarkers. His other research interests encompass testing the comparative effectiveness of cognitive-behavioral vs. pharmacological therapies for insomnia and its phenotypes.

Professional information

Diplomate in Behavioral Sleep Medicine, Board of Behavioral Sleep Medicine, July 2018

Certified in Behavioral Sleep Medicine, American Board of Sleep Medicine, October 2014

Somnologist - Expert in Behavioural Sleep Medicine, European Sleep Research Society, September 2014

Licensed Psychologist, Pennsylvania State Board of Psychology, April 2013


Clinical interests

Dr. Julio Fernandez-Mendoza's clinical practice includes a wide array of sleep disorders, with a special emphasis on insomnia disorder, circadian rhythm sleep disorders, nightmare disorder and hypersomnia disorders.

Teaching and educational interests

Dr. Julio Fernandez-Mendoza's teaching and educational interests include formal lecturing, clinical training and research mentoring of master-level students, medical students (MSR) and doctoral-level students as well as postdoctoral fellows, residents and junior faculty. His areas of mentorship and teaching focus on sleep physiology and behavior, sleep nosology, behavioral sleep medicine (BSM), population-based science and cognitive neuroscience. He teaches and trains within the scope of the Anatomy, Neuroscience, Psychology Internship, and Psychiatry Residency training programs at Penn State College of Medicine and Penn State Health. He has served on several dissertation committees for the graduate programs just mentioned as well as for the Epidemiology, Biobehavioral Health and Nursing doctoral programs. As per clinical training, he serves as Director of the BSM Training Program, which is accredited by the Society of Behavioral Sleep Medicine to train the next generation of Diplomates in BSM (DBSM).

Education/Academic qualification

Postdoctoral Fellowship, Penn State College of Medicine

Jun 2010Dec 2013

Psychobiology, PhD, Universidad Complutense de Madrid

Jun 2006May 2010

Sleep Physiology and Medicine, Master, Universidad Pablo de Olavide

Jan 2007Sep 2007

Psychobiology, Diploma de Estudios Avanzados , Universidad Complutense de Madrid

Nov 2003May 2006

Clinical and Health Psychology, Master, Universidad Complutense de Madrid

Nov 2003Jul 2005

Licenciado in Psychology, Universidad Complutense de Madrid

Oct 1998Jul 2003

External positions

Standing Member, Cancer, Heart, and Sleep Epidemiology Panel A (CHSA) Study Section, National Institutes of Health


Ad hoc Member, Biobehavioral Mechanisms of Emotion, Stress and Health (MESH) Study Section, National Institutes of Health


President, Board of Behavioral Sleep Medicine


Ad hoc Member, Behavioral Medicine Interventions and Outcomes (BMIO) Study Section, National Institutes of Health


Ad hoc Member, Emotions, Sleep, Stress, Health, and Psychopathology Special Emphasis Panel (SEP), National Institutes of Health


Ad hoc Member, Cancer, Heart, and Sleep Epidemiology Panel A (CHSA) Study Section, National Institutes of Health


President-elect, Board of Behavioral Sleep Medicine


Psychologist Reviewer, Associated Professional Sleep Societies (APSS) Program Committee


Director-at-Large, Board of Behavioral Sleep Medicine



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