What If ‘Brain Fog’ Isn’t One Thing at All?
People recovering from COVID, going through perimenopause, managing poor sleep, and recovering from concussion all describe remarkably similar cognitive symptoms. The experience converges. The biology doesn’t.
Sleep, Stress and Alzheimer’s: A Three-Way Conversation Inside the Brain
Research on the brain’s nightly clearance system and the stress-hormone pathway is raising specific biological questions about whether sleep quality and chronic stress may be modifiable contributors to Alzheimer’s disease — and how the evidence currently stands.
The Brain’s ‘Switching System’: Why Moving From One Task to Another Can Be So Hard
A look at what neuroimaging research shows about how the brain coordinates task-switching — and why equivalent performance on switch-cost tests can coexist with substantially different patterns of neural engagement.
Why ADHD Can Look Completely Different in Girls and Women
A look at what the research shows about why ADHD presents differently in many girls and women — from internalizing symptoms and masking to hormonal influences across the lifespan — and what the evidence does and does not establish.
What Your Brain Is Doing During a Migraine Before the Pain Even Starts
The yawning, the food cravings, the stiff neck — they arrive hours before the pain. Research published between 2022 and 2025 shows what the brain is already doing during that interval, and why migraine begins long before the headache does.
Can Stronger Muscles Be Connected to a Healthier Aging Brain?
A 2026 study of 353 older adults found that muscular fitness and aerobic fitness each connect to the aging brain — but through distinct structures and mechanisms, and not through cognitive performance.
The Bipolar Brain: Why Mood Regulation Is Far More Complex Than Mood Swings
Bipolar disorder is commonly described as extreme mood swings — cycling between mania and depression. That description is accurate as far as it goes. Neuroscience over the last decade points to something more distributed: four separate brain systems, each disrupted in its own way, each contributing to the pattern clinicians observe.
Why Trauma Can Change Your Sense of Time
A biological look at why a past event can feel neurologically present — tracing how episodic memory fragments, bodily signals become conditioned alarms, and the brain loses its grip on when.
The Brain’s Executive Office: What the Prefrontal Cortex Actually Does All Day
The prefrontal cortex coordinates working memory, inhibitory control, planning, and emotional regulation through a collection of distinct subregions working together. Understanding what this system actually does — and what makes it fail — gives a more precise account of what focus, self-control, and clear thinking depend on.
Fibromyalgia: What New Research Is Finding Inside the Central Nervous System
Fibromyalgia has been dismissed as ‘all in your head’ for decades. A 2026 systematic review of neuroimaging and cerebrospinal fluid studies now shows the central nervous system is genuinely involved — though not in any way researchers have fully mapped yet.