Paraterminal gyrus

In the volumetric brain

The Territory

Structure. The paraterminal gyrus is a thin strip hugging the corpus callosum's rostrum and anterior commissure's underside, between the callosal sulcus and the subcallosal area — periterminal allocortex of the septal region's cortical rim.

Function. Septal-cortical rim: part of the periterminal septal cortex tied to reward/approach circuitry and autonomic regulation through septal and hypothalamic connections.

The Levers — graded instruments & the levers to come

Experiences of record: Bias retuning (emotional Stroop)

Behaviour · Action · Thought — the tagged profile

Modulating Experiences

The Network — what fires with this region

Papers on disk — 170 full texts

The Evidence — Neurosynth studies (801)

The Evidence — NeuroQuery studies (621)

The Exploration Guide

*Limbic lobe & medial ring · Mai atlas of record · 801 studies · 90 papers on disk*

The paraterminal gyrus is a thin strip hugging the corpus callosum's rostrum — periterminal allocortex on the septal cortex's cortical rim, tied to reward-approach circuitry through septal and hypothalamic connections. Its 90-paper dossier is among the atlas's thinnest, and honestly so.

The Territory

The paraterminal gyrus is a thin strip hugging the corpus callosum's rostrum and anterior commissure's underside, between the callosal sulcus and the subcallosal area — periterminal allocortex of the septal region's cortical rim.

*— {'source': 'Mai, Majtanik & Paxinos', 'work': 'Atlas of the Human Brain, 4th ed., Academic Press/Elsevier', 'kind': 'atlas', 'locator': 'axial plates, MNI y −28.0…+17.1 mm, 8 plates (labels ptg)'}*

What It Does

Septal-cortical rim: part of the periterminal septal cortex tied to reward/approach circuitry and autonomic regulation through septal and hypothalamic connections.

The functional record: septal-cortical rim, reward/approach and autonomic regulation through septal circuits. The decoded profile is reward, caudate, striatum, value, risky — the ventral striatum's rim speaking. The adjacency harvest gave this dossier its literature; no graded instrument is assigned — the septal rim's levers are the striatum's, recorded beside it.

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

The Network

Caudate nucleus (647 shared studies), corpus callosum (635), BA 25 subgenual (412), subcallosal gyrus (375), anterior cingulate (339) — the septal-subgenual reward row, firing together.

Co-activation partners of record: Caudate nucleus:647, Corpus callosum:635, BA 25 - subgenual cingulate:412, Subcallosal gyrus:375, Cingulate gyrus, anterior:339, Intraparietal sulcus:318, Caudate nucleus:313, Third ventricle:305.

When It Fails

The septal area's old literature (septal rage, reward self-stimulation) is the rim's inheritance; its own failure-mode is recorded as the subgenual and striatal circuits' — the honest boundary of a rim.

Its adjacency papers live in the septal, subgenual and striatal literatures at once — the rim is named in them as the landmark. The old septal self-stimulation experiments (Olds and Milner's discovery of reward's substrate) ran electrodes at this rim's edge, which is why reward and risky terms ride its decoded profile: the rim is where approach-circuitry touches cortex.

The Evidence

• Anatomy of motor learning. I. Frontal cortex and attention to action. (1997)
• Neuropsychological correlates of a right unilateral lacunar thalamic infarc (1999) — 10.1136/jnnp.66.1.36
• Linear coupling between cerebral blood flow and oxygen consumption in activ (1999) — 10.1073/pnas.96.16.9403
• Visual function and brain organization in non-decussating retinal-fugal fib (2000) — 10.1093/cercor/10.1.2
• Functional dissociation between medial and lateral prefrontal cortical spat (2000) — 10.1093/cercor/10.1.93
• The visual word form area: spatial and temporal characterization of an init (2000) — 10.1093/brain/123.2.291

801 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 — reward(method-other), caudate(anatomy-reference), striatum(method-other), value(method-other), cortical(anatomy-reference), adults(method-other), risky(method-other), basal ganglia(anatomy-reference) …) are the foundation for the thousands of instruments to come; they are ungraded by law.

Explore Further

Caudate nucleus:647, Corpus callosum:635, BA 25 - subgenual cingulate:412, Subcallosal gyrus:375 — each name is a dossier stop in this explorer.

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