Thalamotelencephalic organization in birds

A. Csillág, Catherine M. Montagnese

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Investigation of thalamo-telencephalic connections reveals correspondences between the avian and mammalian thalamic subdivisions (which may or may not mean true homologies). Based mainly on hodological comparisons, the avian thalamus possesses the principal anatomical and functional subdivisions characteristic for mammals. The current review is focused on a comparative analysis of intralaminar, midline and mediodorsal nuclei. There is evidence for matching subdivisions in the case of midline thalamic and mediodorsal nuclei within the avian dorsal thalamic zone, whereas such correspondence is evident, if less complete, in the case of the intralaminar nuclei. Thalamic connections are also relevant to the debated issue of the avian 'prefrontal' cortex. From the current study it is suggested that the prefrontal analogue regions of the bird may spread across the rostrocaudal extent of telencephalon, the rostral nidopallial/mesopallial region (formerly known as medial neostriatum/ hyperstriatum) being one subdivision, receiving direct input from the paraventricular thalamic nucleus homologue of midline thalamic region (the medial juxtaventricular region of the nucleus dorsomedialis posterior). Hodological evidence from the current study and other reports argues for the possibility that the area corticoidea dorsolateralis might be hodologically comparable to the cingulate cortex, receiving input from a mediodorsal thalamic-relevant subdivision (lateral subdivision of nucleus dorsomedialis anterior, and medial aspect of nucleus dorsolateralis pars medialis), which also projects on the caudal nidopallium close to (but not coextensive with) the nidopallium caudolaterale, another potential analogue of avian prefrontal cortex. The rostral dorsolateral aspect of nucleus dorsomedialis anterior thalami and the dorsal aspect of nucleus dorsolateralis pars medialis are partially comparable to the mammalian intralaminar nuclei, sharing connections to non-limbic 'corticoid' areas (the Wulst), and the reticular thalamic nuclei.

Original languageEnglish
Pages (from-to)303-310
Number of pages8
JournalBrain Research Bulletin
Volume66
Issue number4-6
DOIs
Publication statusPublished - Sep 15 2005

Fingerprint

Midline Thalamic Nuclei
Mediodorsal Thalamic Nucleus
Telencephalon
Prefrontal Cortex
Birds
Neostriatum
Thalamic Nuclei
Gyrus Cinguli
Thalamus
Mammals
Adrenal Cortex Hormones

Keywords

  • Avian brain
  • Cingulate cortex
  • Diencephalon
  • Intralaminar nuclei
  • Mediodorsal nucleus
  • Midline nuclei
  • Prefrontal cortex

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Thalamotelencephalic organization in birds. / Csillág, A.; Montagnese, Catherine M.

In: Brain Research Bulletin, Vol. 66, No. 4-6, 15.09.2005, p. 303-310.

Research output: Contribution to journalArticle

Csillág, A. ; Montagnese, Catherine M. / Thalamotelencephalic organization in birds. In: Brain Research Bulletin. 2005 ; Vol. 66, No. 4-6. pp. 303-310.
@article{ac7db37a1f3b4ae8af31c6a376c202ff,
title = "Thalamotelencephalic organization in birds",
abstract = "Investigation of thalamo-telencephalic connections reveals correspondences between the avian and mammalian thalamic subdivisions (which may or may not mean true homologies). Based mainly on hodological comparisons, the avian thalamus possesses the principal anatomical and functional subdivisions characteristic for mammals. The current review is focused on a comparative analysis of intralaminar, midline and mediodorsal nuclei. There is evidence for matching subdivisions in the case of midline thalamic and mediodorsal nuclei within the avian dorsal thalamic zone, whereas such correspondence is evident, if less complete, in the case of the intralaminar nuclei. Thalamic connections are also relevant to the debated issue of the avian 'prefrontal' cortex. From the current study it is suggested that the prefrontal analogue regions of the bird may spread across the rostrocaudal extent of telencephalon, the rostral nidopallial/mesopallial region (formerly known as medial neostriatum/ hyperstriatum) being one subdivision, receiving direct input from the paraventricular thalamic nucleus homologue of midline thalamic region (the medial juxtaventricular region of the nucleus dorsomedialis posterior). Hodological evidence from the current study and other reports argues for the possibility that the area corticoidea dorsolateralis might be hodologically comparable to the cingulate cortex, receiving input from a mediodorsal thalamic-relevant subdivision (lateral subdivision of nucleus dorsomedialis anterior, and medial aspect of nucleus dorsolateralis pars medialis), which also projects on the caudal nidopallium close to (but not coextensive with) the nidopallium caudolaterale, another potential analogue of avian prefrontal cortex. The rostral dorsolateral aspect of nucleus dorsomedialis anterior thalami and the dorsal aspect of nucleus dorsolateralis pars medialis are partially comparable to the mammalian intralaminar nuclei, sharing connections to non-limbic 'corticoid' areas (the Wulst), and the reticular thalamic nuclei.",
keywords = "Avian brain, Cingulate cortex, Diencephalon, Intralaminar nuclei, Mediodorsal nucleus, Midline nuclei, Prefrontal cortex",
author = "A. Csill{\'a}g and Montagnese, {Catherine M.}",
year = "2005",
month = "9",
day = "15",
doi = "10.1016/j.brainresbull.2005.03.020",
language = "English",
volume = "66",
pages = "303--310",
journal = "Brain Research Bulletin",
issn = "0361-9230",
publisher = "Elsevier Inc.",
number = "4-6",

}

TY - JOUR

T1 - Thalamotelencephalic organization in birds

AU - Csillág, A.

AU - Montagnese, Catherine M.

PY - 2005/9/15

Y1 - 2005/9/15

N2 - Investigation of thalamo-telencephalic connections reveals correspondences between the avian and mammalian thalamic subdivisions (which may or may not mean true homologies). Based mainly on hodological comparisons, the avian thalamus possesses the principal anatomical and functional subdivisions characteristic for mammals. The current review is focused on a comparative analysis of intralaminar, midline and mediodorsal nuclei. There is evidence for matching subdivisions in the case of midline thalamic and mediodorsal nuclei within the avian dorsal thalamic zone, whereas such correspondence is evident, if less complete, in the case of the intralaminar nuclei. Thalamic connections are also relevant to the debated issue of the avian 'prefrontal' cortex. From the current study it is suggested that the prefrontal analogue regions of the bird may spread across the rostrocaudal extent of telencephalon, the rostral nidopallial/mesopallial region (formerly known as medial neostriatum/ hyperstriatum) being one subdivision, receiving direct input from the paraventricular thalamic nucleus homologue of midline thalamic region (the medial juxtaventricular region of the nucleus dorsomedialis posterior). Hodological evidence from the current study and other reports argues for the possibility that the area corticoidea dorsolateralis might be hodologically comparable to the cingulate cortex, receiving input from a mediodorsal thalamic-relevant subdivision (lateral subdivision of nucleus dorsomedialis anterior, and medial aspect of nucleus dorsolateralis pars medialis), which also projects on the caudal nidopallium close to (but not coextensive with) the nidopallium caudolaterale, another potential analogue of avian prefrontal cortex. The rostral dorsolateral aspect of nucleus dorsomedialis anterior thalami and the dorsal aspect of nucleus dorsolateralis pars medialis are partially comparable to the mammalian intralaminar nuclei, sharing connections to non-limbic 'corticoid' areas (the Wulst), and the reticular thalamic nuclei.

AB - Investigation of thalamo-telencephalic connections reveals correspondences between the avian and mammalian thalamic subdivisions (which may or may not mean true homologies). Based mainly on hodological comparisons, the avian thalamus possesses the principal anatomical and functional subdivisions characteristic for mammals. The current review is focused on a comparative analysis of intralaminar, midline and mediodorsal nuclei. There is evidence for matching subdivisions in the case of midline thalamic and mediodorsal nuclei within the avian dorsal thalamic zone, whereas such correspondence is evident, if less complete, in the case of the intralaminar nuclei. Thalamic connections are also relevant to the debated issue of the avian 'prefrontal' cortex. From the current study it is suggested that the prefrontal analogue regions of the bird may spread across the rostrocaudal extent of telencephalon, the rostral nidopallial/mesopallial region (formerly known as medial neostriatum/ hyperstriatum) being one subdivision, receiving direct input from the paraventricular thalamic nucleus homologue of midline thalamic region (the medial juxtaventricular region of the nucleus dorsomedialis posterior). Hodological evidence from the current study and other reports argues for the possibility that the area corticoidea dorsolateralis might be hodologically comparable to the cingulate cortex, receiving input from a mediodorsal thalamic-relevant subdivision (lateral subdivision of nucleus dorsomedialis anterior, and medial aspect of nucleus dorsolateralis pars medialis), which also projects on the caudal nidopallium close to (but not coextensive with) the nidopallium caudolaterale, another potential analogue of avian prefrontal cortex. The rostral dorsolateral aspect of nucleus dorsomedialis anterior thalami and the dorsal aspect of nucleus dorsolateralis pars medialis are partially comparable to the mammalian intralaminar nuclei, sharing connections to non-limbic 'corticoid' areas (the Wulst), and the reticular thalamic nuclei.

KW - Avian brain

KW - Cingulate cortex

KW - Diencephalon

KW - Intralaminar nuclei

KW - Mediodorsal nucleus

KW - Midline nuclei

KW - Prefrontal cortex

UR - http://www.scopus.com/inward/record.url?scp=24344492076&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24344492076&partnerID=8YFLogxK

U2 - 10.1016/j.brainresbull.2005.03.020

DO - 10.1016/j.brainresbull.2005.03.020

M3 - Article

C2 - 16144606

AN - SCOPUS:24344492076

VL - 66

SP - 303

EP - 310

JO - Brain Research Bulletin

JF - Brain Research Bulletin

SN - 0361-9230

IS - 4-6

ER -