Sara Mednick

Professor of Cognitive Sciences UC Irvine

  • Irvine CA

Sara Mednick is an expert in memory consolidation, sleep, aging and brain stimulation and author of “The Power of the Downstate.”

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UC Irvine

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Biography

Sara C. Mednick is Professor of Cognitive Sciences at the University of California, Irvine and author of the book, Take a Nap! Change Your Life. (Workman). She is passionate about understanding how the brain works through her research into sleep and cognition. Mednick’s seven-bedroom sleep lab at UCI works literally around-the-clock to discover methods for boosting cognition through a range of different interventions including napping, brain stimulation with electricity, sound and light, as well as pharmacological interventions. Additionally, her lab is interested in how sleep changes throughout the menstrual cycle and lifespan. Her science has been continuously federally funded (National Institute of Health, National Science Foundation, Department of Defense Office of Naval Research, DARPA). Mednick was awarded the Office Naval Research Young Investigator Award in 2015. Her research findings have been published in such leading scientific journals as Nature Neuroscience and The Proceedings from the National Academy of Science, and covered by all major media outlets. She received a BA from Bard College, Annandale-on-Hudson, NY, in Drama/Dance. After college, her experience working in the psychiatry department at Bellevue Hospital in New York, inspired her to study the brain and how to make humans smarter through better sleep. She received a PhD in Psychology from Harvard University, and then completed a postdoc at the Salk Institute for Biological Studies and UC San Diego.

Areas of Expertise

Memory Consolidation
Aging
Sleep
Pharmacology
Cognitive Science

Education

Harvard University

PhD

Psychology

2003

Bard College

BA

Drama/Dance

1994

Media Appearances

Does a short nap actually boost your brain? Here’s what the science says

ZME Science  online

2025-08-22

In 2024, Sara Mednick from the University of California, Irvine compared how naps, caffeine, and a placebo improve cognitive function. Surprisingly, the placebo was better than the caffeine at improving cognitive functioning. But napping was by far the best option. “It’s like putting yourself into low-power mode just for a little bit and letting your body recuperate,” said Mednick.

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Research reveals overlooked factor contributing to dangerous sleep issue: 'It's a whole global problem'

The Cool Down  online

2025-08-16

Sara Mednick is a sleep expert and neuroscientist at the University of California, Irvine. She told the news organization that the cumulative impacts of bad sleep are broader than just feeling tired. In fact, the long-term effects of sleep loss and sleep disorders have been linked to increased risks of hypertension, diabetes, obesity, depression, heart attack, and stroke. "It's a whole global problem that we need to really think about," said Mednick.

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‘Artificial Nap’ Could Provide Benefits of Sleep—Without Sleeping

Scientific American  online

2025-03-26

These findings imply that brain stimulation could deliver some of the benefits of naps without sleep. The results in primates strongly suggest “artificial nap” effects will translate to humans, says Sara Mednick, a neuroscientist at the University of California, Irvine, who studies the relation between napping and performance; evidence already exists that electrical stimulation during sleep can benefit humans’ memory. “This work demonstrates that stimulating [when awake] at the delta frequency can mimic sleep benefits,” Mednick says.

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Articles

Midday napping in children: associations between nap frequency and duration across cognitive, positive psychological well-being, behavioral, and metabolic health outcomes

Sleep

Jianghong Liu, Rui Feng, Xiaopeng Ji, Naixue Cui, Adrian Raine, Sara C Mednick

2019

Poor sleep and daytime sleepiness in children and adolescents have short- and long-term consequences on various aspects of health. Midday napping may be a useful strategy to reduce such negative impacts. The effect of habitual napping on a wide spectrum of cognitive, behavioral, psychological, and metabolic outcomes has not been systematically investigated.

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Morning stimulant administration reduces sleep and overnight working memory improvement

Behavioural Brain Research

Tenzin Tselha, Lauren N Whitehurst, Benjamin D Yetton, Tina T Vo, Sara C Mednick

2019

The goal of cognitive enhancement is to improve mental functions using interventions including cognitive training, brain stimulation and pharmacology. Indeed, psychostimulants, commonly used for cognitive enhancement purposes, while preventing sleep, have been shown to increase working memory (WM) and attention.

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Timing between Cortical Slow Oscillations and Heart Rate Bursts during Sleep Predicts Temporal Processing Speed, but Not Offline Consolidation

Journal of Cognitive Neuroscience

Mohsen Naji, Giri P Krishnan, Elizabeth A McDevitt, Maxim Bazhenov, Sara C Mednick

2019

Central and autonomic nervous system activities are coupled during sleep. Cortical slow oscillations (SOs;

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