Claustrum
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2008-06-21T11:55:56Z
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{{Distinguish|colostrum}}
{{Infobox Brain|
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Image = Telencephalon-Horiconatal.jpg |
Caption = Horizontal section of right cerebral hemisphere. |
Image2 = |
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BrainInfoNumber = 234 |
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The '''claustrum''' (Latin for [[barrier]]) is a thin layer of [[grey matter]] lying between the [[extreme capsule]] and [[external capsule]] in the [[brain]].
==Anatomy==
The thickness of this layer is 1-2 mm. The [[external capsule]] separates the claustrum from ''[[nucleus lentiformis]]''. The [[extreme capsule]] on the other side separates it from the grey matter of the ''[[Insular cortex|insula]]''.
Very little is known about its function, although it has reciprocal connections with the [[cerebral cortex]].
Some authors consider the claustrum to be a separate part from ''nuclei lentiformis'', others a separate part of the insular cortex, while a third party of authors states that it consists of two areas or parts: ''insular'' and ''temporal''.
Contemporary anatomy states that the claustrum and ''corpus amygdaloideum'' do not belong to the ''[[basal nuclei]]''.<ref name="urlBasal Ganglia and Cerebellum">{{cite web |url=http://thalamus.wustl.edu/course/cerebell.html |title=Basal Ganglia and Cerebellum |format= |work= |accessdate=}}</ref> However, they are still classified among the basal ganglia in [[NeuroNames]].
==Function==
[[Francis Crick]], a [[neuroscience|neuroscientist]] who was keen on studying the [[neural correlate of consciousness]], pointed to the claustrum as one of the most probable key components of consciousness in one of his last works.<ref name="urlAccess : : Nature">{{cite web |url=http://www.nature.com/nature/journal/v435/n7045/full/4351040a.html |title= Consciousness: Crick and the claustrum |format= |work= |accessdate=}}</ref><ref name="pmid16147522">{{cite journal |author=[[Francis C. Crick]] and [[Christof Koch]] |title=What is the function of the claustrum? |journal=[[Philos. Trans. R. Soc. Lond., B, Biol. Sci.]] |volume=360 |issue=1458 |pages=1271–9 |year=2005 |month=June |pmid=16147522 |doi=10.1098/rstb.2005.1661 |url=http://journals.royalsociety.org/openurl.asp?genre=article&doi=10.1098/rstb.2005.1661}}</ref>
==Additional images==
<gallery>
Image:Gehirn Frontalschnitt hippocampus.png|Coronal section
Image:Gray717.png|Coronal section of brain immediately in front of pons.
Image:Gray718.png|Coronal section of brain through intermediate mass of third ventricle.
Image:Gray730.png|Section of brain showing upper surface of temporal lobe.
Image:Gray744.png|Coronal section of brain through anterior commissure.
</gallery>
== References ==
{{reflist}}
The Claustrum: A Historical Review of its Anatomy, Physiology, Cytochemistry and Proposed Functional Significance, Cell. Mol. Biol., 2004, 50/6: 675-702.
==External links==
* {{BrainMaps|Claustrum}}
* {{eMedicineDictionary|Claustrum}}
{{neuroanatomy-stub}}
{{Basal ganglia}}
[[Category:Cerebrum]]
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