Name = PAGENAME
Caption = Coronal slices of human brain showing the
basal ganglia, subthalamic nucleus (STN) and substantia nigra(SN). STN is in subthalamus; SN is not.
BrainInfoType = hier
BrainInfoNumber = 417
MeshName = Subthalamus
MeshNumber = A08.186.211.730.385.800
DorlandsPre = s_28
DorlandsSuf = 12767157
The subthalamus is a part of the
diencephalon. cite web |url=http://www.sci.uidaho.edu/med532/subthalamus.htm |title=subthalamus |format= |work= |accessdate=]
During development the subthalamus is continuous with the
hypothalamus, but is separated by white matterfibres mainly from the internal capsule. Caudally, the subthalamus or prethalamus is separated from the thalamus by the zona limitans intrathalamica. Other nuclei of the subthalamus are the zona incerta, thalamic reticular nucleus, and the fields of Forel.
Post-natally the subthalamus lies beneath the
thalamus, hence 'sub' (meaning below) 'thalamus'. It also lies dorsolateral to the hypothalamus.
The subthalamus develops efferent (output) connections to the
striatum( caudate nucleusand putamen) in the telencephalon, to the dorsal thalamus (medial and lateral nuclear groups) in the diencephalon, and to the red nucleusand substantia nigrain the mesencephalon. It receives afferent (input) connections from the substantia nigra and striatum.
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