Dentate nucleus

In the volumetric brain

The Territory

Structure. The dentate nucleus is the cerebellum's largest deep nucleus — a crumpled band of grey matter folded like a purse within each hemisphere's white core, its hilum opening medially toward the superior cerebellar peduncle, which it seeds.

Function. The neocerebellum's output station: it receives Purkinje inhibition from the lateral (cognitive/planning) hemisphere, times and refines complex movements, and feeds the thalamus-prefrontal loop; dentate lesions give intention tremor, dysmetria and the 'cerebellar cognitive' flatness of planning.

The Levers — graded instruments & the levers to come

Behaviour · Action · Thought — the tagged profile

The Network — what fires with this region

Papers on disk — 150 full texts

The Evidence — Neurosynth studies (277)

The Evidence — NeuroQuery studies (267)

The Exploration Guide

*Cerebellum · Mai atlas of record · 277 studies · 128 papers on disk*

The right dentate — the mirror purse. Same crumpled grey, same neocerebellar output role, and its decoded profile adds a hint of the cognitive cerebellum: verbal and working-memory terms appear among the motor ones, the lateral hemisphere's language loop passing through on its way to prefrontal cortex.

The Territory

The dentate nucleus is the cerebellum's largest deep nucleus — a crumpled band of grey matter folded like a purse within each hemisphere's white core, its hilum opening medially toward the superior cerebellar peduncle, which it seeds.

*— {'source': 'Naidich, Duvernoy, Delman, Sorensen, Kollias & Haacke', 'work': "Duvernoy's Atlas of the Human Brain Stem and Cerebellum: High-Field MRI, Springer", 'kind': 'atlas', 'locator': 'cerebellum, deep nuclei'}*

What It Does

The neocerebellum's output station: it receives Purkinje inhibition from the lateral (cognitive/planning) hemisphere, times and refines complex movements, and feeds the thalamus-prefrontal loop; dentate lesions give intention tremor, dysmetria and the 'cerebellar cognitive' flatness of planning.

The functional record mirrors its twin: Purkinje inhibition received from the planning hemisphere, complex movement timed and refined, thalamus-prefrontal relay out. The right dentate's evidence adds stroke to its vocabulary — the deep nuclei's vascular territory is a clinical map of its own. No graded instrument is assigned; the loop's levers are cortical.

*— {'source': 'Josephine C. Moore', 'work': 'Brain Atlas and Functional Systems', 'kind': 'atlas', 'locator': 'cerebellum, functional systems'}*

The Network

The dentate mirror (153 shared studies), thalamus (140+135), postcentral sulcus (136), vermis (130) — the deep nuclei's bilateral conversation plus the vermis's medial row.

Co-activation partners of record: Dentate nucleus:153, Thalamus:140, Postcentral sulcus:136, Thalamus:135, Vermis of cerebellum:130, Cingulate gyrus, anterior:114, BA 6 - premotor/SMA:110, Putamen:108.

When It Fails

Dentate dystonia, dysmetria, and the stroke-side lesion picture. The purse opens medially; the clinical deficits pour out of the same hilum.

The right dentate's stroke vocabulary marks its vascular lesson: the deep nuclei's supply is a distal territory of the superior cerebellar artery, and the purse-shaped nucleus sits at the far end of it — an infarct here is a timing engine's silence, clinically a hand that cannot complete what it started.

The Evidence

• Anatomy of motor learning. I. Frontal cortex and attention to action. (1997)
• Human cerebellum plays an important role in memory-timed finger movement: a (2000)
• Neural activity relating to generation and representation of galvanic skin (2000)
• Musical hallucinosis in acquired deafness. Phenomenology and brain substrat (2000) — 10.1093/brain/123.10.2065
• Separate neural correlates for the mnemonic components of successive discri (2001) — 10.1093/cercor/11.1.59
• Crossmodal processing of object features in human anterior intraparietal co (2002) — 10.1016/S0896-6273(02)00741-9

277 studies total touch this region in the Neurosynth corpus of record; the full literature lives beside this dossier.

The Levers

• No graded instrument touches this region yet — its lever candidates are named in the tagged profile; the grading is the campaign to come.

Candidate levers (Neurosynth-decoded terms — cerebellar(anatomy-reference), cerebellum(anatomy-reference), motor(action-motor), movements(action-motor), nuclei(anatomy-reference), wm(method-other), verbal(method-other), stroke(method-other) …) are the foundation for the thousands of instruments to come; they are ungraded by law.

Explore Further

Dentate nucleus:153, Thalamus:140, Postcentral sulcus:136, Thalamus:135 — each name is a dossier stop in this explorer.

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