Medial dorsal nucleus

Medial dorsal nucleus
Brain: Medial dorsal nucleus
ThalamicNuclei.png
Thalamic nuclei:
MNG = Midline nuclear group
AN = Anterior nuclear group
MD = Medial dorsal nucleus
VNG = Ventral nuclear group
VA = Ventral anterior nucleus
VL = Ventral lateral nucleus
VPL = Ventral posterolateral nucleus
VPM = Ventral posteromedial nucleus
LNG = Lateral nuclear group
PUL = Pulvinar
MTh = Metathalamus
LG = Lateral geniculate nucleus
MG = Medial geniculate nucleus
Thalmus.png
Thalamic nuclei
Latin nucleus mediodorsalis thalami
NeuroNames hier-295
MeSH mediodorsal+thalamic+nucleus
NeuroLex ID birnlex_1543

The medial dorsal nucleus (or dorsomedial nucleus of thalamus) is a large nucleus in the thalamus.

It is believed to play a role in memory.[1]

Contents

Anatomy

It receives inputs from the prefrontal cortex and the limbic system and in turn relays them to the Pre-Frontal Association Cortex. As a result, it plays a crucial role in attention, planning, organization, abstract thinking, multi-tasking and active memory.

The connections of the medial dorsal nucleus have even been used to delineate the prefrontal cortex of the Göttingen minipig brain.[2]

By stereology the number of brain cells in the region has been estimated to around 6.43 million neurons in the adult human brain and 36.3 million glial cells, and with the newborn having quite different numbers: around 11.2 million neurons and 10.6 million glial cells.[3]

Clinical significance

Lesions of the medial dorsal nucleus have been associated with Korsakoff's syndrome.

Additional images

References

  1. ^ Li XB, Inoue T, Nakagawa S, Koyama T (May 2004). "Effect of mediodorsal thalamic nucleus lesion on contextual fear conditioning in rats". Brain Res. 1008 (2): 261–72. doi:10.1016/j.brainres.2004.02.038. PMID 15145764. http://linkinghub.elsevier.com/retrieve/pii/S0006899304003683. 
  2. ^ Jacob Jelsing, Anders Hay-Schmidt, Tim Dyrby, Ralf Hemmingsen, Harry B. M. Uylings, Bente Pakkenberg (2006). "The prefrontal cortex in the Göttingen minipig brain defined by neural projection criteria and cytoarchitecture". Brain Research Bulletin 70 (4–6): 322–336. doi:10.1016/j.brainresbull.2006.06.009. PMID 17027768. 
  3. ^ Maja Abitz, Rune Damgaard Nielsen, Edward G. Jones, Henning Laursen, Niels Graem and Bente Pakkenberg (2007). "Excess of Neurons in the Human Newborn Mediodorsal Thalamus Compared with That of the Adult". Cerebral Cortex 17 (11): 2573–2578. doi:10.1093/cercor/bhl163. PMID 17218480. 

External links




Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Medial geniculate nucleus — Brain: Medial geniculate nucleus Thalamic nuclei: MNG = Midline nuclear group AN = Anterior nuclear group MD = Medial dorsal nucleus VNG = Ventral nuclear group VA = Ventral anterior nucleus VL = Ventr …   Wikipedia

  • medial dorsal nucleus of thalamus — n. mediodorsalis thalami …   Medical dictionary

  • Medial vestibular nucleus — Brain: Medial vestibular nucleus A cross section of the lower pons showing the medial vestibular nucleus (#3) labeled at the top left …   Wikipedia

  • Medial parabrachial nucleus — Brain: Medial parabrachial nucleus Latin nucleus parabrachialis medialis NeuroNames hier 757 NeuroLex ID birnlex 4038 The Medial parabrachial nuc …   Wikipedia

  • Dorsal nucleus of vagus nerve — Brain: Posterior nucleus of vagus nerve Nuclei of origin of cranial motor nerves schematically represented; lateral view. ( X visible at bottom center.) …   Wikipedia

  • Nucleus accumbens — Brain: Nucleus accumbens Nucleus accumbens visible in red …   Wikipedia

  • nucleus mediodorsalis thalami — [TA] medial dorsal nucleus of thalamus: the largest of the medial nuclei of the thalamus, having a rostral magnocellular part and a caudolateral parvocellular part, both of which make extensive intrathalamic connections with most of the other… …   Medical dictionary

  • dorsal nucleus of medial geniculate body — n. dorsalis corporis geniculati medialis …   Medical dictionary

  • Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… …   Medical dictionary

  • Medial lemniscus — Brain: Medial lemniscus The sensory tract. (Medial lemniscus labeled at center right.) Coronal …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”