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HEWED

A teaching instrument

Explore the science behind a feeling.

Enter a feeling or metaphor to explore literature-linked regions, confidence, and sources. Each result explains the limits of what those associations can tell us.

Runs in this browser. The citation engine maps your phrase on this page; the phrase is not sent anywhere. Live AI analysis is not available in this release.

More about where the phrase goes

Nowhere: matching happens in this tab against a fixed atlas of cited associations, and nothing is stored or logged. Avoid personal details anyway.

Choose an example or enter your own phrase.

Interactive mapping needs JavaScript. If controls stay unavailable, reload this page or read the sources.

Explore the regions the literature associates with a phrase, with confidence bands and citations. This diagram cannot measure your brain or diagnose a feeling.
Teaching diagram
drag to rotate · click a node · read its sources
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Cortex
Limbic
Reward
Subcortical
Sensory
Hindbrain

How the engine works

Live AI analysis: not available

Switched off in this release. Your phrase is not sent to a server or an AI provider. A live option would return only after a separate review of the provider, privacy, budget and abuse controls.

Citation engine in your browser

A citation-grounded rules engine runs on this page, so the phrase is not sent anywhere. Every reading carries confidence bands and the same limitations.

Honesty guardrails

Confidence is capped at moderate. No answer claims certainty, because reverse inference forbids it. The caveat is attached to every response by the engine code.

The region atlas

The regions the interface can surface

A schematic teaching atlas, not an MNI coordinate map. Each region is scoped to associations the literature supports.

DLPFCCortex
Dorsolateral prefrontal cortex

Associated with working memory, planning, and cognitive control. In the cognitive-debt work, this is part of the network that disengages when reasoning is offloaded to AI.

vmPFC / OFCCortex
Ventromedial prefrontal / orbitofrontal cortex

Associated with linking emotion to value and decision making, and with self-referential meaning.

ACCCortex
Anterior cingulate cortex

Associated with the integration of negative affect, pain, conflict, and cognitive control.

InsulaCortex
Anterior insula

Associated with interoception, the felt sense of the body, and with disgust and urgency. Activation here does not prove any single feeling.

AmygdalaLimbic
Amygdala

Popularly the 'fear center,' but meta-analysis shows it is not fear-specific: it responds to salience across many states, including sadness. The clearest case for reading it as an association, never a verdict.

HippocampusLimbic
Hippocampus

Associated with episodic memory and the binding of experience over time.

NAccReward
Nucleus accumbens / ventral striatum

Associated with reward anticipation, wanting, and motivation.

ThalamusSubcortical
Thalamus

A central relay associated with routing sensory and motor signals across the cortex.

PCC / DMNCortex
Posterior cingulate / default mode

Part of the default mode network, associated with self-referential thought, mind-wandering, and rumination.

M1Sensory
Primary motor cortex

Associated with the planning and execution of voluntary movement.

STGSensory
Superior temporal / auditory-language cortex

Associated with hearing, and with the processing of speech and language.

V1Sensory
Occipital / visual cortex

Associated with early visual processing, including visual metaphor and imagery.

PAGHindbrain
Brainstem / periaqueductal gray

Associated with arousal, autonomic response, and defensive reactions such as freezing or the urge to flee.

CerebellumHindbrain
Cerebellum

Classically motor coordination, increasingly associated with timing and aspects of cognition and affect.

Every association traces to a source. See the full sources list.