principal inferior olivary nucleus

principal inferior olivary nucleus (PrIO)

Also known as: principal inferior olivary nucleus, Nucleus olivaris inferior principalis, main olivary nucleus, chief inferior olivary nucleus, inferior olivary nucleus (Barr & Kiernan), principal nucleus of inferior olive, inferior olive, principal nucleus, inferior olivary complex, principal olive, principal nucleus, principal olive

NeuroNames ID: 749

All Names & Sources

1 of 22

Showing 22 synonym(s) - Use arrows to navigate

Showing 22 synonym(s)

Name:

IOpr

Language:

acronym

Organism:

rat

Source:

Swanson-1998

Citation:

Second Revised Edition, Elsevier Science, Amsterdam, 1998

Source Title:

Brain Maps: Structure of the Rat Brain

Name:

núcleo olivar inferior principal

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:

IOPr

Language:

acronym

Organism:

mouse

Source:

Paxinos-2001

Citation:

Second Edition, Academic Press, San Diego, 2001

Source Title:

The Mouse Brain in Stereotaxic Coordinates

Name:

principal inferior olivary nucleus

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

principal inferior olivary nucleus

Language:

English

Organism:

Macaca fascicularis

Source:

Martin-1997

Citation:

Primate Information Center, University of Washington, Seattle, 1997.

Source Title:

Template Atlas of the Primate Brain

Name:

Nucleus olivaris inferior principalis

Language:

Latin

Organism:

Macaca mulatta

Source:

Oertel-1969

Citation:

Journal fuer Hirnforschung 11: pp. 377-405, 1969

Source Title:

Zur zyto- und myeloarchitektonik des Rhombencephalon des Rhesusaffen (Macaca mulatta Zimmerman)

Name:

main olivary nucleus

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

chief inferior olivary nucleus

Language:

English

Organism:

human

Source:

Crosby-1962

Citation:

New York: MacMillan, 1962

Source Title:

Correlative Anatomy of the Nervous System

Name:

inferior olivary nucleus (Barr & Kiernan)

Language:

English

Organism:

human

Source:

Anthoney-1994

Citation:

Boca Raton, Florida: CRC Press, 1994

Source Title:

Neuroanatomy And The Neurologic Exam: A Thesaurus of Synonyms, Similar Sounding Non-Synonyms And Terms Of Variable Meaning

Name:

principal nucleus of inferior olive

Language:

English

Organism:

human

Source:

Anthoney-1994

Citation:

Boca Raton, Florida: CRC Press, 1994

Source Title:

Neuroanatomy And The Neurologic Exam: A Thesaurus of Synonyms, Similar Sounding Non-Synonyms And Terms Of Variable Meaning

Name:

inferior olive, principal nucleus

Language:

English

Organism:

rat

Source:

Bowden-1997

Citation:

Source Title:

A digital Rosetta stone for primate brain terminology

Name:

inferior olivary complex, principal olive

Language:

English

Organism:

rat

Source:

Bowden-1997

Citation:

Source Title:

A digital Rosetta stone for primate brain terminology

Name:

nucleus olivarius inferior principalis

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:

PrIO

Language:

acronym

Organism:

macaque

Source:

Martin-2000

Citation:

Elsevier, Amsterdam, 2000

Source Title:

Primate Brain Maps: Structure Of The Macaque Brain

Name:

Olivenhauptkern

Language:

German

Organism:

human

Source:

Kahle-2001

Citation:

Seventh Edition, Georg Thieme Verlag, Stuttgart, 2001

Source Title:

Taschenatlas der Anatomie<br> Volume 3: Nervensystem und Sinnesorgane

Name:

nucleo olivare inferiore

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

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

Source Title:

Fondamenti di Neuroanatomia

Name:

nukleus olivari inferior utama

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:

nucleo olivare inferiore principale

Language:

Italian

Organism:

human

Source:

Carpenter-1995

Citation:

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

Source Title:

Fondamenti di Neuroanatomia

Name:

principal nucleus of inferior olivary complex

Language:

acronym

Organism:

Macaca mulatta

Source:

Jones-2005

Citation:

UC Regents Davis campus, 2005

Source Title:

BrainMaps.org

Name:

principal nucleus

Language:

English

Organism:

Unspecified

Source:

NeuroNames

Citation:

University of Washington, Seattle, WA

Source Title:

NeuroNames

Name:

principal olive

Language:

English

Organism:

rat

Source:

Swanson-2004

Citation:

Third Edition, Elsevier Academic Press, Oxford, 2004

Source Title:

Brain Maps: Structure of the Rat Brain.

Name:

IOPr

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	Relevant Data Not Located

1 of 10

Showing 10 record(s) - Use arrows to navigate

Showing 10 record(s)

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

chief inferior olivary nucleus

Source:

Crosby-1962

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

inferior olivary nucleus (Barr & Kiernan)

Source:

Anthoney-1994

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

main olivary nucleus

Source:

Carpenter-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

principal inferior olivary nucleus

Source:

Carpenter-1983

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

principal nucleus of inferior olive

Source:

Anthoney-1994

Basis:

Topology

Has Equivalent:

Yes

Organism:

Macaca fascicularis (Macaca fascicularis)

Their Name:

principal inferior olivary nucleus

Source:

Martin-1997

Basis:

Topology

Has Equivalent:

Yes

Organism:

Macaca mulatta (Macaca mulatta)

Their Name:

Nucleus olivaris inferior principalis

Source:

Oertel-1969

Basis:

Topology

Has Equivalent:

Yes

Organism:

Rattus (rat)

Their Name:

inferior olivary complex, principal olive

Source:

Bowden-1997

Basis:

Topology

Has Equivalent:

Yes

Organism:

Rattus (rat)

Their Name:

inferior olive, principal nucleus

Source:

Bowden-1997

Basis:

Topology

Has Equivalent:

Yes

Organism:

Rattus (rat)

Their Name:

principal olive

Source:

Swanson-2004

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

principal inferior olivary nucleus

dorsal accessory nucleus of the inferior olive

medial accessory nucleus of the inferior olive

inferior olivary complex - not otherwise specified

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

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.

gray matter (central nervous system gray matter)

white matter (basic fiber systems)

cerebral ventricles (ventricular system)