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Posts tagged #neuroscience

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Research

Twenty minutes with a pen

What the science actually says about writing your way through trauma

There is a real, replicated, forty-year research literature behind the claim that fifteen to twenty minutes of honest writing can help people process difficult experiences. There is also a wellness-internet version of that claim that has drifted some distance from what the studies actually show. This essay walks the original Pennebaker protocol, the Lieberman affect-labeling neuroscience, the meta-analytic effect sizes from Smyth through Frattaroli, and the boundary conditions — including where writing demonstrably does not reduce core PTSD symptoms — and arrives at a defensible version of the claim that neither oversells nor undersells the evidence.

#expressive-writing #trauma #neuroscience #mental-health #psychology

By Mick

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Research

Becoming a stranger

What dépaysement is actually doing to the brain, and why "travel rewires you" overshoots the evidence

The French word dépaysement names something real — the strange clarity that comes from being somewhere unfamiliar. There is a wellness-internet version of this idea that has drifted some distance from what the research actually shows, and a smaller, more interesting version supported by predictive-processing accounts of perception, by Ritter and colleagues' work on schema violations, and by Maddux and Galinsky's finding that living abroad — but not travelling abroad — predicts creativity when people psychologically adapt to the new culture. This essay walks the gap between the two versions and arrives at the more defensible claim: temporary unfamiliarity interrupts the brain's habitual predictions, which sometimes lets people recover parts of experience that routine has quietly edited out.

#depaysement #neuroscience #novelty #creativity #cognitive-flexibility #travel

By Mick

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Energy & Recovery

Stress isn't the enemy — chronicity is

The hormesis curve and why acute and chronic stress look identical at the cellular level

A hard workout, a cold plunge, and a difficult problem trigger almost the same physiological response as chronic financial worry. What separates beneficial from damaging is not the magnitude of the stressor but its duration and the recovery that follows it.

#stress #hormesis #recovery #hrv #neuroscience #sleep

By Mick

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Energy & Recovery

Sleep is upstream of almost everything

What the evidence supports, what it doesn't, and where the popular discourse has run ahead of the science

The case for treating sleep as a foundational lever is one of the strongest signals in physiology. The case for tracking your REM percentages on a wrist device is considerably weaker. The distinction matters.

#sleep #recovery #circadian #flow #neuroscience #hrv #caffeine #light

By Mick

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Flow & Focus

Flow isn't what you think it is

The state the literature describes, and the one the marketing sells

Csikszentmihalyi's original research describes a psychological state with reasonable scientific support. The popular literature has converted that descriptive finding into a prescriptive performance hack. The distance between the two matters.

#flow #deep-work #neuroscience #evidence

By Mick

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Field Notes

Does TV really "eat your dopamine"?

What the neuroscience says about passive consumption and reward, and where the slogan overreaches

The claim that television "depletes dopamine" has spread from Lembke and Huberman into general health discourse. The underlying neuroscience does not say what the popular version claims it says. The behavioural concerns about passive consumption are real, and largely independent of dopamine.

#contested #neuroscience #habits #attention #evidence #social

By Mick

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Flow & Focus

Single-tasking, attention residue, and the cost of switching

What the task-switching literature actually shows

The popular framing of multitasking as a moral failure misses what the research describes: the brain does not multitask, it switches between tasks, and the cost of switching is larger and more invisible than the people incurring it typically realise.

#deep-work #focus #attention #evidence #neuroscience

By Mick

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