This article offers an overall anatomic review of thalamic structures,
including cross-referencing of the principal nomenclatures in current
use to describe them. Those that have been used as targets in functio
nal stereotactic procedures are identified. For these procedures, phys
iologic identification of the intended target is necessary, in additio
n to stereotactic imaging, to correct for both deficiencies of imaging
and individual variations in the locations of structures within their
anatomic framework.