Experimental Brain Research

, Volume 83, Issue 2, pp 268–284

Corticothalamic connections of the superior temporal sulcus in rhesus monkeys

  • E. H. Yeterian
  • D. N. Pandya
Article

DOI: 10.1007/BF00231152

Cite this article as:
Yeterian, E.H. & Pandya, D.N. Exp Brain Res (1991) 83: 268. doi:10.1007/BF00231152

Summary

The corticothalamic connections of the superior temporal sulcus (STS) were studied by means of the autoradiographic technique. The results indicate that corticothalamic connections of the STS in general reciprocate thalamocortical connections. The cortex of the upper bank of the STS-multimodal areas TPO and PGa-projects to four major thalamic targets: the pulvinar complex, the mediodorsal nucleus, the limitanssuprageniculate nucleus, as well as intralaminar nuclei. Within the pulvinar complex, the main projections of the upper bank of the STS are directed to the medial pulvinar (PM) nucleus. Rostral upper bank regions tend to project caudally and medially within the PM nucleus, caudal upper bank regions, more laterally and ventrally. The mid-portion of the upper bank tends to occupy the central sector of the PM nucleus. There are also relatively minor projections from upper bank regions to the lateral pulvinar (PL) and oral pulvinar (PO) nuclei. In contrast to the upper bank, the projections from the lower bank are directed primarily to the pulvinar complex, with only minor projections to intralaminar nuclei. The rostral portion of the lower bank projects mainly to caudal and medial regions of the PM nucleus, whereas the caudal lower bank projects predominantly to the lateral PM nucleus, and also to the PL, PO, and inferior pulvinar (PI) nuclei. The mid-portion of the lower bank projects mainly to central and lateral portions of the PM nucleus, and also to the PI and PL nuclei. The rostral depth of the STS projects mainly to the PM nucleus, with only minor connections to the PO, PI, and PL nuclei. The midportion of multimodal area TPO of the upper bank, areas TPO2 and TPO3, projects preferentially to the central sector of the PM nucleus. It is possible that this STS-thalamic connectivity has a role in behavior that is dependent upon more than one sensory modality.

Key words

Cortex Temporal Thalamus Pulvinar Multimodal Monkey 

Abbreviations

AM

anterior medial nucleus

AS

arcuate sulcus

AV

anterior ventral nucleus

BSC

brachium of the superior colliculus

Cd

caudate nucleus

Cif

nucleus centralis inferior

Cim

nucleus centralis intermedialis

CL

central lateral nucleus

CM

centromedian nucleus

CM-Pf

centromedian-parafascicular nucleus

Cs

nucleus centralis superior

CS

central sulcus

CSL

nucleus centralis lateralis superior

GLd

dorsal lateral geniculate nucleus

GM

medial geniculate nucleus

Hb

habenula

IOS

inferior occipital sulcus

IPS

intraparietal sulcus

LD

lateral dorsal nucleus

LF

lateral fissure

Li

limitans nucleus

LP

lateral posterior nucleus

LS

lunate sulcus

MD

mediodorsal nucleus

Pa

paraventricular nucleus

Pen

paracentral nucleus

Pf

parafascicular nucleus

PI

inferior pulvinar nucleus

PL

lateral pulvinar nucleus

PM

medial pulvinar nucleus

PO

oral pulvinar nucleus

PS

principal sulcus

Pt

parataenial nucleus

R

reticular nucleus

Re

reuniens nucleus

SG

suprageniculate nucleus

STN

subthalamic nucleus

STS

superior temporal sulcus

THI

habenulo-interpeduncular tract

VLc

nucleus ventralis lateralis, pars caudalis

VLm

nucleus ventralis lateralis, pars medialis

VLo

nucleus ventralis lateralis, pars oralis

VLps

nucleus ventralis lateralis, pars postrema

VPI

ventroposteroinferior nucleus

VPLc

nucleus ventralis posterior lateralis, pars caudalis

VPLo

nucleus ventralis posterior lateralis, pars oralis

VPM

ventroposteromedial nucleus

VPMpc

ventroposteromedial nucleus, parvocellular portion

X

nucleus X

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • E. H. Yeterian
    • 1
    • 2
  • D. N. Pandya
    • 2
    • 3
    • 4
  1. 1.Department of PsychologyColby CollegeWatervilleUSA
  2. 2.Edith Nourse Rogers Memorial Veterans HospitalBedfordUSA
  3. 3.Departments of Anatomy and NeurologyBoston University School of MedicineBostonUSA
  4. 4.Harvard Neurological Unit, Beth Israel HospitalBostonUSA

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