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.”
Media
Social
Biography
Areas of Expertise
Education
Harvard University
PhD
Psychology
2003
Bard College
BA
Drama/Dance
1994
Links
Media Appearances
Are Naps Good for You? What Sleep Experts Really Want You to Know
Prevention Health online
2026-04-09
“The same types of cognitive benefits you see with a full night of sleep, you see with a nap,” says Sara Mednick, Ph.D., a professor of cognitive science at the University of California, Irvine, and the author of The Power of the Downstate: Recharge Your Life Using Your Body’s Own Restorative Systems. “People show better verbal, spatial, and working memory; better creativity; better perception; and better attentional processing after a nap.”
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.
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.
‘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.
What dreams are made of: Scientists mine sleep’s mysteries
The Washington Post online
2025-02-08
Sara Mednick, a cognitive scientist at the University of California, Irvine, said she views dreams as a “safe space where we can bring up potentially emotionally charged experiences,” and then play out the possibilities. … In her research, Mednick has found that, for people who have experienced a negative emotional event, dreaming about it can help tamp down the attached emotions.
Articles
Midday napping in children: associations between nap frequency and duration across cognitive, positive psychological well-being, behavioral, and metabolic health outcomes
SleepJianghong 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.
Morning stimulant administration reduces sleep and overnight working memory improvement
Behavioural Brain ResearchTenzin 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.
Timing between Cortical Slow Oscillations and Heart Rate Bursts during Sleep Predicts Temporal Processing Speed, but Not Offline Consolidation
Journal of Cognitive NeuroscienceMohsen 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;
The impact of psychostimulants on sustained attention over a 24-h period
CognitionLauren N Whitehurst, Sara Agosta, Roberto Castaños, Lorella Battelli, Sara C Mednick
2019
The off-label use of psychostimulants is a growing trend in healthy adults with many turning to these medications to increase alertness, attentional focus, and to help them study. However, the empirical literature on the efficacy of these medications for cognitive enhancement is controversial and the longer-term impact of these drugs on health and cognitive processing has not been thoroughly examined.
New directions in sleep and memory research: the role of autonomic activity
Current Opinion in Behavioral SciencesLauren N Whitehurst, Pin-Chun Chen, Mohsen Naji, Sara C Mednick
2020
Over the last 100 years there has been a proliferation of research into the mechanisms of sleep that support cognition. Majority of these studies point to electroencephalographic features during sleep that are linked to plasticity and support valuable cognitive skills, like long-term memory.


