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© 2026 Developments Today. All rights reserved.

sleep Articles | Developments Today

Normal-looking sleep can mask memory problems, study suggests

Normal Sleep Patterns Can Still Conceal Memory Deficits, Mouse Study Finds

Researchers studied hippocampal interneurons with high Chrm2 expression in mice.
Suppressing the cells after learning impaired object-location memory and social recognition.
Standard sleep-wake and broad brain-wave measures remained unchanged.
The findings highlight a circuit-level process during non-REM sleep that supports memory consolidation.

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DT Editorial Team·Nov 8, 2026·via medicalxpress.com

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For caregivers with cardiovascular conditions, poor sleep and emotional distress are linked to greater strain

Caregivers With Heart Conditions Face Added Strain From Poor Sleep and Distress

The study examined 792 family and unpaid caregivers with cardiovascular conditions.
Disrupted sleep, lower energy, reduced leg strength, longer care hours and negative emotions were associated with greater burden.
Researchers say clinicians should ask about caregiving responsibilities when treating cardiovascular patients.

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DT Editorial Team·Oct 19, 2026·via medicalxpress.com

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Melatonin and Ambien before surgery may improve sleep, reduce pain and opioid use after surgery

Pre-Surgery Sleep May Reduce Pain and Opioid Use

The review assessed 16 studies with more than 1,100 patients.
It focused on melatonin or zolpidem used before, rather than after, surgery.
Melatonin was associated with less anxiety, pain and inflammation across reviewed studies.
Some abdominal-surgery studies found opioid use fell by more than 30%.

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DT Editorial Team·Oct 19, 2026·via medicalxpress.com

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Napping linked to dementia risk

Napping Patterns Linked to Higher Dementia Risk in Study

Researchers followed more than 990 dementia-free Medicare beneficiaries aged 65 and older for up to 10 years.
Frequent, unintended and short naps were each associated with higher observed dementia risk.
The study is observational and cannot show that napping causes dementia.

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DT Editorial Team·Oct 17, 2026·via medicalxpress.com

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Does your sleep tracker get it right? A neuroscientist weighs in

Sleep Tracker Accuracy: A Neuroscientist on What Wearables Miss

A 2025 meta-analysis of 24 studies and nearly 800 participants found wearables overestimate total sleep time by about 17 minutes per night compared with polysomnography.
The main blind spot is quiet wakefulness: lying still and awake is often misinterpreted as sleep, which disproportionately affects people with insomnia.
Wearables do not measure brain waves directly, so sleep-stage estimates (REM, deep sleep) are inferred from movement and heart rate rather than measured clinically.
Apple's newest watch introduces a morning readiness score and claims the most accurate heart-rate tracking, but these claims have not been independently verified.

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DT Editorial Team·Oct 6, 2026·via medicalxpress.com

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Remote work increases sleep and reduces physical activity—sedentary behavior can increase by 45 minutes

Remote Work Adds 15 Minutes of Sleep but 45 Minutes of Sitting

A University of Turku study published in the International Journal of Behavioral Nutrition and Physical Activity used accelerometers to compare remote and office workdays among hybrid workers.
Participants slept about 15 minutes longer on remote days than on office days.
Sedentary time rose by roughly 45 minutes on remote days, with decreases in standing, light activity, and moderate-to-vigorous activity.
Researchers attribute much of the extra sitting to less time standing, possibly because home setups rarely include standing workstations.

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DT Editorial Team·Sep 11, 2026·via medicalxpress.com

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Stress-Induced Sleep Dysregulation: The Roles of Astrocytes and Microglia in Neurodegenerative and Psychiatric Disorders (via www.mdpi.com)

Sleep as Therapy: How Targeting Disrupted Sleep Could Transform Chronic Disease Treatment

Sleep disruption is now viewed as a modifiable driver of chronic illness, not just a symptom.
Drugmakers are developing compounds targeting sleep pathways, such as orexin antagonists and circadian modulators.
Improving sleep could prevent or treat conditions like diabetes, cardiovascular disease, and Alzheimer's.
Integration of sleep screening and therapies into clinical practice is gaining momentum.

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DT Editorial Team·Aug 14, 2026·via nature.com

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Have trouble sleeping in a new place? Most do because of the first-night effect

Why You Can't Sleep in a New Place: The First-Night Effect Explained

The first-night effect is a common phenomenon causing reduced and poorer sleep in new environments.
It is believed to have evolutionary roots, with the brain remaining vigilant to potential threats.
The effect is more pronounced in children, adolescents, and older adults, and worsens with age.
Anxiety and the brain's inability to recognize modern safety contribute to the effect.

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DT Editorial Team·Aug 11, 2026·via medicalxpress.com

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First-of-its-kind study reveals how sleep strengthens memory and how epilepsy can disrupt the process

Sleep Study Maps How Epilepsy Can Disrupt Memory

Researchers identified coordinated sleep activity across the orbitofrontal cortex, thalamus, and hippocampus as important for memory consolidation.
The study reports that stronger coordination across those regions was linked to better memory performance.
Epileptic spikes interrupted that activity during sleep and were associated with worse memory outcomes.

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DT Editorial Team·Jul 28, 2026·via medicalxpress.com

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Fecal microbe transplantation may improve sleep in people with chronic insomnia

Gut microbiome transplant shows promise for chronic insomnia

A randomized, double-blind, placebo-controlled trial tested microbiota capsules for chronic insomnia.
The treatment group showed better sleep efficiency and less wakefulness after sleep onset after one month.
Patient-reported sleep quality also improved over a two- to six-month period compared with placebo.

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DT Editorial Team·Jul 22, 2026·via medicalxpress.com

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Melatonin may ease chronic pain, study finds

Melatonin study points to a possible new role in chronic pain care

Researchers reviewed 23 randomized controlled trials involving 2,028 adults.
Melatonin reduced pain by about 9 points on a 0 to 100 scale on average.
The supplement also improved sleep quality across the analyzed evidence.
The study suggests melatonin could help reduce reliance on higher-risk pain medications.

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DT Editorial Team·Jun 30, 2026·via medicalxpress.com

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Coordinated brainstem slow waves may determine when it's time for REM sleep

Brainstem Slow Waves May Help Set the Timing of REM Sleep

Researchers recorded large populations of brainstem neurons during sleep in mice.
Slow coordinated fluctuations appeared before transitions from non-REM sleep to REM sleep.
The findings suggest REM timing may depend on gradual population-level brain dynamics.

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DT Editorial Team·Jun 22, 2026·via medicalxpress.com

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These tiny genetic fragments may be critical for telling a brain when to rest

Microexons Linked to Hyperarousal and Sleep Loss in Zebrafish

Researchers linked altered neural microexons to hyperarousal in zebrafish.
Affected larvae showed heightened neural activity, changed swimming, and reduced sleep.
The work connects alternative splicing to the biological control of arousal.
Because arousal regulation is evolutionarily conserved, the findings may inform autism and schizophrenia research.

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DT Editorial Team·Jun 19, 2026·via medicalxpress.com

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A good night's sleep begins with healthy gut bacteria. Here's how to look after yours

How Healthy Gut Bacteria Improve Sleep Quality: Expert Tips

The gut microbiota influences sleep through neurotransmitter production and stress hormone regulation.
A healthy gut produces short-chain fatty acids like butyrate that reduce inflammation and improve sleep.
Three tips: eat fiber-rich foods, consume fermented foods, and maintain a consistent sleep schedule.
The gut-sleep connection is bidirectional; poor sleep can harm gut bacteria diversity.

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DT Editorial Team·Jun 8, 2026·via medicalxpress.com

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ADHD brains show sleep-like activity even while awake

ADHD Brains Slip Into Sleep Mode During Demanding Tasks

High-density EEG reveals brief sleep-like slow-wave brain activity in ADHD subjects during demanding cognitive tasks
Slow-wave intrusion episodes directly predicted errors and slow responses in trial-by-trial analysis
Finding reframes ADHD as partly an arousal regulation disorder, explaining why stimulant medications work

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DT Editorial Team·Mar 18, 2026·3 min read·via sciencedaily.com

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