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<p><b>New page</b></p><div>'''Brodmann area 21''' is one of the cytoarchitectonic areas of the human brain. According to Brodmann's classification, it is part of the [[temporal lobe]] and is also known as the middle temporal area 21. This area is involved in auditory processing and language comprehension.<br />
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== Anatomy ==<br />
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Brodmann area 21 is located in the middle part of the [[temporal lobe]], between [[Brodmann area 20]] (inferior temporal area) and [[Brodmann area 22]] (superior temporal area). It is bordered by the [[Sylvian fissure]] (lateral sulcus) superiorly and the [[inferior temporal sulcus]] inferiorly.<br />
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[[File:Brodmann Cytoarchitectonics 21.png|thumb|right|Brodmann area 21 shown in green on lateral surface of left cerebral hemisphere.]]<br />
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== Function ==<br />
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The exact functions of Brodmann area 21 are not fully understood, but it is believed to play a role in auditory processing and language comprehension. It is also involved in the processing of complex auditory information, such as music and speech.<br />
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== Clinical significance ==<br />
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Alterations in Brodmann area 21 have been associated with several neurological and psychiatric conditions, including [[schizophrenia]], [[autism]], and [[Alzheimer's disease]]. For example, post-mortem studies have found reduced neuron density in this area in individuals with schizophrenia.<br />
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== See also ==<br />
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* [[Brodmann area]]<br />
* [[List of regions in the human brain]]<br />
* [[Cytoarchitecture]]<br />
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== References ==<br />
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<references /><br />
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== External links ==<br />
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* [http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=2409 Brodmann area 21] at BrainInfo<br />
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[[Category:Brodmann areas]]<br />
[[Category:Temporal lobe]]<br />
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