Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys.

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Abstract Text:

Soumya Iyengar,Hui-Xin Qi,Neeraj Jain,Jon H Kaas,

Connections of representations of the teeth and tongue in primary somatosensory cortex (area 3b) and adjoining cortex were revealed in owl, squirrel, and marmoset monkeys with injections of fluorescent tracers. Injection sites were identified by microelectrode recordings from neurons responsive to touch on the teeth or tongue. Patterns of cortical label were related to myeloarchitecture in sections cut parallel to the surface of flattened cortex, and to coronal sections of the thalamus processed for cytochrome oxidase (CO). Cortical sections revealed a caudorostral series of myelin dense ovals (O1-O4) in area 3b that represent the periodontal receptors of the contralateral teeth, the contralateral tongue, the ipsilateral teeth, and the ipsilateral tongue. The ventroposterior medial subnucleus, VPM, and the ventroposterior medial parvicellular nucleus for taste, VPMpc, were identified in the thalamic sections. Injections placed in the O1 oval representing teeth labeled neurons in VPM, while injections in O2 representing the tongue labeled neurons in both VPMpc and VPM. These injections also labeled adjacent part of areas 3a and 1, and locations in the lateral sulcus and frontal lobe. Callosally, connections of the ovals were most dense with corresponding ovals. Injections in the area 1 representation of the tongue labeled neurons in VPMpc and VPM, and ipsilateral area 3b ovals, area 3a, opercular cortex, and cortex in the lateral sulcus. Contralaterally, labeled neurons were mostly in area 1. The results implicate portions of areas 3b, 3a, and 1 in the processing of tactile information from the teeth and tongue, and possibly taste information from the tongue.

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Publishing Authors By Initials

S Iyengar,HX Qi,N Jain,JH Kaas,

For similar tooth research abstracts see: tooth research

PUBMED ID PMID:

MEDLINE DATE:

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of comparative neurology

VOLUME: 501

Page Numbers: 95-120

Journal Abbreviation:

ISSN: 0021-9967

DAY: 1

MONTH: Mar

YEAR: 2007

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 406041

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Keywords Mesh Terms:

KEYWORDS: Tooth

MESH TERMS: physiology

Chemical & Substance for Abstract: Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys. Information

Substance Name: Electron Transport Complex IV

Registry Number: EC 1.9.3.1

Grant and Affiliation Information for Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys.

AFFILIATION: National Brain Research Centre, Deemed University, 122050, Haryana, India.

Country: United States

AGENCY: United States NINDS

GRANT: NS 16446

ACRONYM: NS

MEDLINETA: J Comp Neurol

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys Related Publications

• Architectonic Subdivisions of Neocortex in the Gray Squirrel (Sciurus carolinensis).
• Areal specialization of pyramidal cell structure in the visual cortex of the tree shrew: a new twist revealed in the evolution of cortical circuitry.
• Cellular scaling rules for primate brains.
• Corpus callosum connections of subdivisions of motor and premotor cortex, and frontal eye field in a prosimian primate, Otolemur garnetti.
• Cortical and thalamic connections of the representations of the teeth and tongue in somatosensory cortex of new world monkeys.
• Cortical connections of the middle temporal and the middle temporal crescent visual areas in prosimian galagos (Otolemur garnetti).
• Microstimulation and architectonics of frontoparietal cortex in common marmosets (Callithrix jacchus).
• Subcortical projections of the dorsomedial visual area (DM) of visual association cortex in the owl monkey, Aotus trivirgatus.
• Thalamic connections of architectonic subdivisions of temporal cortex in grey squirrels (Sciurus carolinensis).
• Thalamic connections of the dorsal and ventral premotor areas in New World owl monkeys.
• The evolution of the complex sensory and motor systems of the human brain.
• The organization of frontoparietal cortex in the tree shrew (Tupaia belangeri): II. Connectional evidence for a frontal-posterior parietal network.
• The thalamic connections of motor, premotor, and prefrontal areas of cortex in a prosimian primate (Otolemur garnetti).
• Widespread spatial integration in primary somatosensory cortex.