The thalamus (from Greek ??????? = bedroom, chamber, IPA= /??æl?m?s/) is a pair and symmetric part of the brain. It constitutes the main part of the diencephalon. Location and topography In the caudal (tail) to oral (mouth) sequence of neuromeres, the diencephalon is located between the mesencephalon (cerebral peduncule, belonging to the brain stem) and the cerebrum. The diencephalon includes also the dorsally located epithalamus (essentially the habenula and annexes) and the perithalamus (prethalamus formerly described as ventral thalamus) containing the zona incerta and the "reticulate nucleus" (not the reticular, term of confusion). Due to their different ontogenetic origins, the epithalamus and the perithalamus are formally distinguished from the thalamus proper. Phylogenetic modifications are such that this article essentially deals with the human thalamus and may differ in comparison with accounts in

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # TAGS