pyramidal decussation

pyramidal decussation (pyx)

Also known as: decussation of the pyramidal tract, pyramidal decussation, Decussatio pyramidum, Decussatio motoria, motor decussation, corticospinal decussation, decussation of corticospinal tract, decussation of pyramidal tract fibers, pyramidal decussation (Pourfour du Petit)

NeuroNames ID: 799

All Names & Sources

1 of 29

Showing 29 synonym(s) - Use arrows to navigate

Showing 29 synonym(s)

Name:

перекрест пирамид

Language:

Russian

Organism:

human

Source:

Baev-2000

Citation:

Moskva: Meditsina, 2000.

Source Title:

Magnitno-Resonansnaia Tomografiia Golovnogo Mozga: Normal'naia Anatomiia

Name:

pyd

Language:

acronym

Organism:

mouse

Source:

Hof-2000

Citation:

Elsevier, Amsterdam, 2000

Source Title:

Comparative Cytoarchitectonic Atlas of the C57BL/6 and 129/Sv Mouse Brains

Name:

decussation of the pyramidal tract

Language:

English

Organism:

mouse

Source:

Hof-2000

Citation:

Elsevier, Amsterdam, 2000

Source Title:

Comparative Cytoarchitectonic Atlas of the C57BL/6 and 129/Sv Mouse Brains

Name:

моторный перекрест

Language:

Russian

Organism:

human

Source:

Baev-2000

Citation:

Moskva: Meditsina, 2000.

Source Title:

Magnitno-Resonansnaia Tomografiia Golovnogo Mozga: Normal'naia Anatomiia

Name:

decussazione cortico-spinale

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

decusación corticoespinal

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

Name:

Kreuzung der Pyramidenbahn

Language:

German

Organism:

human

Source:

Schiebler-1999

Citation:

Eighth Edition, Springer Verlag, Berlin, 1999.

Source Title:

Anatomie

Name:

pyramidal decussation

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

pyramidal decussation

Language:

English

Organism:

Macaca fascicularis

Source:

Szabo-1984

Citation:

J Comp Neurol 1984 Jan 10;222(2):265-300

Source Title:

A stereotaxic atlas of the brain of the cynomolgus monkey (Macaca fascicularis)

Name:

pyramidal decussation

Language:

English

Organism:

rat

Source:

Bowden-1997

Citation:

Source Title:

A digital Rosetta stone for primate brain terminology

Name:

Decussatio pyramidum

Language:

Latin

Organism:

human

Source:

Nomina-1983

Citation:

Fifth Edition, Williams and Wilkins Co., Baltimore, 1983

Source Title:

Nomina Anatomica

Name:

Decussatio pyramidum

Language:

Latin

Organism:

Macaca fascicularis

Source:

Shantha-1968

Citation:

Baltimore: Williams and Wilkins, 1968

Source Title:

A Stereotaxic Atlas Of The Java Monkey Brain (Macaca irus)

Name:

Decussatio motoria

Language:

Latin

Organism:

human

Source:

Nomina-1983

Citation:

Fifth Edition, Williams and Wilkins Co., Baltimore, 1983

Source Title:

Nomina Anatomica

Name:

motor decussation

Language:

English

Organism:

human

Source:

Crosby-1962

Citation:

New York: MacMillan, 1962

Source Title:

Correlative Anatomy of the Nervous System

Name:

corticospinal decussation

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

decussation of corticospinal tract

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

decussation of pyramidal tract fibers

Language:

English

Organism:

human

Source:

Crosby-1962

Citation:

New York: MacMillan, 1962

Source Title:

Correlative Anatomy of the Nervous System

Name:

pyramidal decussation (Pourfour du Petit)

Language:

English

Organism:

rat

Source:

Swanson-1998

Citation:

Second Revised Edition, Elsevier Science, Amsterdam, 1998

Source Title:

Brain Maps: Structure of the Rat Brain

Name:

decussatio pyramidum

Language:

Indonesian

Organism:

human

Source:

Noback-1982

Citation:

Jakarta: Penerbit Buku Kedokteran EGC, 1982

Source Title:

Anatomi Susunan Saraf Manusia, Prinsip-Prinsip Dasar Neurobiologi

Name:

dekusasi piramis

Language:

Indonesian

Organism:

human

Source:

Noback-1982

Citation:

Jakarta: Penerbit Buku Kedokteran EGC, 1982

Source Title:

Anatomi Susunan Saraf Manusia, Prinsip-Prinsip Dasar Neurobiologi

Name:

decusación de las pirámides bulbares

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

Name:

dekusasi traktus kortikospinal

Language:

Indonesian

Organism:

human

Source:

Noback-1982

Citation:

Jakarta: Penerbit Buku Kedokteran EGC, 1982

Source Title:

Anatomi Susunan Saraf Manusia, Prinsip-Prinsip Dasar Neurobiologi

Name:

decussazione delle piramidi

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

pyx

Language:

acronym

Organism:

macaque

Source:

Martin-2000

Citation:

Elsevier, Amsterdam, 2000

Source Title:

Primate Brain Maps: Structure Of The Macaque Brain

Name:

decussazione corticospinale

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

Pyramidenkreuzung

Language:

German

Organism:

human

Source:

Schiebler-1999

Citation:

Eighth Edition, Springer Verlag, Berlin, 1999.

Source Title:

Anatomie

Name:

перекрест пирамид

Language:

Russian

Organism:

human

Source:

Savel'ev-1996

Citation:

AREA XVII, Moscow, 1996.

Source Title:

Stereoskopicheskii Atlas Mozga Cheloveka

Name:

decusación piramidal

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

Name:

pyx

Language:

acronym

Organism:

Macaca mulatta

Source:

Paxinos-2009a

Citation:

Amsterdam: Elsevier-Academic Press. 2009

Source Title:

The Rhesus Monkey Brain, Second Edition

Illustrations

Showing 3 illustration(s)

myelin stain & diagram of
all aspects in
human

labeled line drawings of
sagittal section in
Macaca fascicularis

multiple views of
3D reconstruction in
Macaca mulatta

Species With The Structure

Equivalent By	Human	Macaque	Rat	Mouse
Topology	Has The Structure	Has The Structure	Has The Structure	Has The Structure

1 of 12

Showing 12 record(s) - Use arrows to navigate

Showing 12 record(s)

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

corticospinal decussation

Source:

Carpenter-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Decussatio motoria

Source:

Nomina-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Decussatio pyramidum

Source:

Nomina-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

decussation of corticospinal tract

Source:

Carpenter-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

decussation of pyramidal tract fibers

Source:

Crosby-1962

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

motor decussation

Source:

Crosby-1962

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

pyramidal decussation

Source:

Carpenter-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Macaca fascicularis (Macaca fascicularis)

Their Name:

Decussatio pyramidum

Source:

Shantha-1968

Basis:

Topology

Has Equivalent:

Yes

Organism:

Macaca fascicularis (Macaca fascicularis)

Their Name:

pyramidal decussation

Source:

Szabo-1984

Basis:

Topology

Has Equivalent:

Yes

Organism:

Rattus (rat)

Their Name:

pyramidal decussation

Source:

Bowden-1997

Basis:

Topology

Has Equivalent:

Yes

Organism:

Rattus (rat)

Their Name:

pyramidal decussation (Pourfour du Petit)

Source:

Swanson-1998

Basis:

Topology

Has Equivalent:

Yes

Organism:

Mus (mouse)

Their Name:

decussation of the pyramidal tract

Source:

Hof-2000

Models Where It Appears

Structural CNS Model - Macaque

Brain structures of the macaque are illustrated in BrainInfo’s NeuroMaps macaque brain atlas. Structures are grouped by proximity in a hierarchy corresponding to the central nervous system hierarchy of NeuroNames ( Bowden-1995 Martin-2000 ). Structures in the NeuroMaps atlas are based on the segmentation of an MRI of the brain of a 3-year old male rhesus macaque (Macaca mulatta). The atlas is most useful for targeting structures for implantating electrodes and chemtrodes. Updated 29 Oct 2025.

metabrain (metencephalon)

medulla

vestibular nuclei

cochlear nuclei

medullary reticular formation

raphe nuclei of the medulla

solitary nucleus

inferior olivary complex

dorsal motor nucleus of the vagus nerve

central gray of the medulla

hypoglossal nucleus

nucleus prepositus

nucleus intercalatus

diffuse reticular nucleus

sublingual nucleus

inferior salivatory nucleus

interpolar part of the spinal trigeminal nucleus

ambiguous nucleus (nucleus ambiguus)

cuneate nucleus (cuneate nucleus of the medulla)

accessory cuneate nucleus

gracile nucleus (gracile nucleus of the medulla)

caudal part of the spinal trigeminal nucleus

central canal of the medulla

arcuate nucleus of the medulla

supraspinal nucleus

area postrema

caudal part of the spinal trigeminal nucleus

medullary white matter

inferior cerebellar peduncle

solitary tract

tectospinal tract of the medulla

medial lemniscus of the medulla

decussation of the medial lemniscus

medial longitudinal fasciculus of the medulla

cuneate fasciculus of the medulla

gracile fasciculus of the medulla

spinal trigeminal tract of the medulla

accessory nerve fibers

glossopharyngeal nerve fibers

vagal nerve fibers

internal arcuate fibers

ventral external arcuate fibers

hypoglossal nerve fibers

pyramidal decussation

pyramidal tract

lateral corticospinal tract of the medulla

anterior corticospinal tract of the medulla

olivocerebellar tract

rubrospinal tract

dorsal spinocerebellar tract of the medulla

ventral spinocerebellar tract of the medulla

spinothalamic tract of the medulla (spinothalamic tract of medulla)

lateral vestibulospinal tract of the medulla (lateral vestibulospinal tract)

medullary white matter - not otherwise specified

anterior median fissure of the medulla

cisterna magna (cerebellomedullary cistern)

choroidal fissure

Functional CNS Model - Rat

The Functional CNS Model - Rat (FMrat) ( Swanson-2004) is one of three hierarchical models representing the internal organization of the central nervous system (CNS). The others are the Structural CNS Model - Human (SThmn) and the Functional CNS Model - Human (FMhmn). The FMrat model represents the basic organization of the mouse ( Hof-2000 AMBA-2024 ) and, presumably, other rodents. Functional CNS models differ from structural models in that structures are defined and named by connectivity rather than by proximity to other structures at the same level. Functional models are more useful for representing longitudinal components of are grouped based on information drawn from multiple neuroscientific disciplines. such as connections, neurochemical characteristics, and role in physiogical and behavioral processes. While the Functional Model was developed primarily for an atlas of the rat brain ( Swanson-2004 ), the hierarchical organization of structures is for the most part applicable to the human, macaque, mouse and other mammalian brains as well. Structures at lower levels of the Functional CNS hierarchy are largely the same as in the Classical and Developmental Models, i.e., they were originally identified by stains for gray matter (Nissl substance) and white matter (myelin). At the next higher level they are grouped into basic connectional and functional systems of the CNS, such as the subcortical sensory systems, the brainstem motor system and the behavioral state system. At the highest levels CNS structures are grouped on the basis of dissection and embryologic precursors into cerebrum ( cerebral cortex and cerebral nuclei ), cerebellum, and cerebrospinal trunk.