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The pupil as a window into the sleeping brain

For the first time, researchers have been able to observe how the pupils react during sleep over a period of several hours. A look under the eyelids showed them that more happens in the brain during sleep than was previously assumed.

Why some are more susceptible to developing PTSD symptoms than others

People with a more active amygdala (an area in the brain involved in processing information relevant to threats) are more likely to develop PTSD symptoms after experiencing trauma than people with a calmer amygdala.

Should I stay or should I go? Brain switchboard found

Researchers have revealed neural circuits in the brainstem that are crucially involved in implementing decisions by controlling three fundamental behavioral states or strategies: perseverance, exploration and disengagement. The circuits revealed in thi…

New research shows impact of anxiety and apathy on decision-making

New research has uncovered that anxiety and apathy — two common but distinct emotional states — lead to fundamentally different patterns in how people learn and make decisions.

How the brain distinguishes between pain and itch

A research team has uncovered the neural mechanisms underlying the processing of pain and itch in the anterior cingulate cortex (ACC). This study provides new insights into how the brain distinguishes between these two distinct sensory experiences.

Don’t let this stress you out

Having one traumatic experience is bad enough. If you’ve constantly experienced stress since before birth, you may be in for an especially tough time. Our emotions may be influenced by infections experienced in the mother’s womb. This can result from t…

Smart adhesive electrode avoids nerve damage

A research team has developed a three-dimensional neural electrode that deforms smoothly using soft actuation technology. It is expected to be used in various next-generation soft bioelectronic devices, including electroceuticals for peripheral nerve t…

It’s not just what you say — it’s also how you say it

First study to reveal the brain encodes pitch accents separately from the sounds that make up words. Heschl’s gyrus region of the brain, an earlier stage of auditory processing, plays a much larger role than previously thought. Findings could transform…

Sleep patterns may reveal comatose patients with hidden consciousness

Overnight bursts of brain waves seen in normal sleep can help doctors predict which unresponsive patients hospitalized with acute severe brain injuries will awaken and eventually recover.

Evidence expanding that 40Hz gamma stimulation promotes brain health

A decade of studies from labs around the world provide a growing evidence base that increasing the power of the brain’s gamma rhythms could help fight Alzheimer’s, and perhaps other, neurological diseases.