"Common mammalian nomenclature, structural (topographic) approach"			
	Brain region (division)	Abbreviation	Notes
1	Nervous system	NS	
1.1	Cerebrospinal axis	CSA	"This is the ""old"" CNS. The term is preferred for structural/topographical nomenclatures."
1.1.1	Cerebral cortex	CTX	layers 1-6.
1.1.1.1	Primary visual cortex	VISp	"The primary and associative sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified."
1.1.1.2	Associative visual cortex	VISa	"The primary, associative sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified."
1.1.1.3	Primary auditory cortex	AUDp	"The primary sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified."
1.1.1.4	Associative auditory cortex	AUDa	"The primary and associative sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified."
1.1.1.5	Primary somatosensory cortex	SSp	"The primary sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified."
1.1.1.6	Associative somatosensory cortex	SSa	"The primary sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified."
1.1.1.7	Primary motor cortex	MOp	"The primary sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified. The cerebral cortex can be organized in occipital, parietal, etc. parts, but the landmarks that mark their borders are difficult to "
1.1.1.8	Associative motor cortex	MOa	"The primary sensory and motor cortices are assumed to be common across mammals, even though there may be specific cases such as moles. The cortex of marine mammals also needs to be clarified. The cerebral cortex can be organized in occipital, parietal, etc. parts, but the landmarks that mark their borders are difficult to "
1.1.1.9	Anterior cingulate cortex	ACA	"Defined as the medio-dorsal cortex, rostral to the splenium of the corpus callosum. All mammals have it, except those that do not have a corpus callosum."
1.1.1.10	Posterior cingulate cortex	RSP	"Defined as the medio-dorsal cortex, caudal to the splenium of the corpus callosum. All mammals have it, except those that do not have a corpus callosum. Also known as retrosplenial cortex (RSP)."
1.1.1.11	Medial cortex	Mctx	"The cortex of the medial side of the brain, ventral from anterior cingulate cortex. It would include the prelimbic, infralimbic, and possibly some common orbital cortices."
1.1.1.12	Olfactory bulb	OB 	Not really necessary.
1.1.1.12.1	Main olfactory bulb	MOB	
1.1.1.12.2	Accessory (vomeronasal) olfactory bulb	AOB	
1.1.1.12.3	Anterior olfactory nucleus	AON	"It is divided in several nuclei, but they are species-specific."
1.1.1.13	Hippocampal formation	HIP	
1.1.1.13.1	Dentate gyrus	DG	
1.1.1.13.2	CA1 field	CA1	
1.1.1.13.3	CA2 field	CA2	
1.1.1.13.4	CA3 field	CA3	
1.1.1.13.5	Subiculum	Sub	
1.1.1.14	Insula	INS	"Possibly to be subdivided, includes the taste and pain-related cortical regions."
1.1.1.15	Piriform cortex	PIR	
1.1.1.16	Entorhinal cortex	ENT	
1.1.1.17	Claustrum	CLA	"layer 7, or 6a. Same for EP."
1.1.1.18	Endopiriform nucleus	EP	Usually divided into ventral and dorsal nuclei
1.1.1.19	Amygdala	Amy	"Heterogeneous brain region, made of variable numbers of regions (nuclei). Considered here as separate brain part, under cerebral cortex, but not sure whether is best."
1.1.1.19.1	Cortical amygdala	COA	"The first three parts of the amygdala are defined topographically and hodologically. The reason for this approach is the structural-topographic character of this nomenclature. A different way to divide the amygdala would be in the cortical subplate nuclei, the cortical nuclei, the striatal part of the amygdala, the olfactory amygdala, etc."
1.1.1.19.2	Medial amygdala	MEA	"The first three parts of the amygdala are defined topographically and hodologically. The reason for this approach is the structural-topographic character of this nomenclature. A different way to divide the amygdala would be in the cortical subplate nuclei, the cortical nuclei, the striatal part of the amygdala, the olfactory amygdala, etc."
1.1.1.19.3	Central amygdala	CEA	"The first three parts of the amygdala are defined topographically and hodologically. The reason for this approach is the structural-topographic character of this nomenclature. A different way to divide the amygdala would be in the cortical subplate nuclei, the cortical nuclei, the striatal part of the amygdala, the olfactory amygdala, etc."
1.1.1.19.4	Olfactory amygdala	OlfA	Consists of the amygdalar nuclei that receive either olfactory or vomeronasal inputs and are not included in the three topographical parts above.
1.1.1.19.5	Fronto-parietal amygdala	FPA	"The term is borrowed from Butler and Hodos 1996 (see Fig. 19-20, page360). Includes those nuclei that share consistent connections with the lateral cortex and frontal cortex, the lateral amygdalar nucleus and the anterior part of the basolateral amygdalar nucleus."
1.1.1.19.5.1	Lateral amygdala	LA	
1.1.1.19.5.2	Basolateral complex	BL	
1.1.2	Cerebral nuclei	CNU	
1.1.3.1	Striatum	STR	
1.1.3.1.1	Dorsal striatum	CP	"Also called caudo-putamen, while in more evolved mammals divided in caudate and putamen. The abbreviation is from the caudate-putamen."
1.1.3.1.2	Ventral striatum	STRv	"In rats, STRv also contains the fundus of the striatum (FS), which sometimes is partially overlapping with the rostral substantia innominata. Not sure whether all mammals have the FS."
1.1.3.1.2.1	Nucleus accumbens	ACB	Some authors further subdivide it into a core and a shell. Not sure whether all mammals have these 2 subdivisions clearly separated.
1.1.3.1.2.2	Olfactory tubercle	OT	
1.1.3.1.2.3	Septum (lateral part)	LS	Sometimes called medial striatum.
1.1.3.1.2.4	Meynert's nucleus	MA	
1.1.2.2	Pallidum	PAL	
1.1.2.2.1	Globus pallidus	GP	Sometimes called the dorsal pallidum.
1.1.2.2.1.1	Globus pallidus external part	GPex	"Some authors use the latin version: ""pars externa"". Also called the lateral part of the globus pallidus."
1.1.2.2.1.2	Globus pallidus internal part	GPin	"Some authors use the latin version: ""pars internal"". Also called the medial part of the globus pallidus. "
1.1.2.2.1.3	Globus pallidus ventral part	GPv	
1.1.2.2.3	Septum (medial part)	MS	
1.1.2.2.4	Nucleus of diagonal band (of Broca)	NDB	
1.1.2.2.5	Substantia innominata	SI	
1.1.2.2.6	Islands of Calleja	IS	"They are intercalated into SI, but are distinct regions. May be further subdivided into major island of calleja et al."
1.1.2.2.7	Bed nuclei of the stria terminalis	BST	"Makes (or is included) the rostral part of the pallidum. BST, as amygdala, is a heterogeneous collection of nuclei, which are divided in different ways, depending on the criteria. Need to check several species"
1.1.3	Brainstem	BS	
1.1.3.1	Diencephalon	IB	"The English translation would be ""between-brain"", or interbrain."
1.1.3.1.1	Thalamus	TH	
1.1.3.1.1.1	Dorsal thalamus	DOR	
1.1.3.1.1.1.1	"Dorsal thalamus, lateral group"	DORl	
1.1.3.1.1.1.1.1	Lateral dorsal nucleus	LD	
1.1.3.1.1.1.1.2	Lateral posterior nucleus	LP	"In monkeys and apes, LP is replaced by the pulvinar nucleus. "
1.1.3.1.1.1.1.3	Posterior nuclear nucleus	PO	
1.1.3.1.1.1.2	"Dorsal thalamus, ventral group"	DORv	The sizes and numbers of the thalamic nuclei in this group depends by species.
1.1.3.1.1.2.2.1	Ventral-anterior nucleus of the thalamus	VA	
1.1.3.1.1.2.2.2	Ventral-lateral nucleus of the thalamus	VL	
1.1.3.1.1.2.2.3	Ventral-medial nucleus of the thalamus	VM	
1.1.3.1.1.2.2.4	Ventral-posterior nucleus of th thalamus	VP	"The thalamic nucleus that relays somatosensory, (projects to primary and secondary somatosensory regions), gustatory, and pain information."
1.1.3.1.1.1.3	"Dorsal thalamus, medial geniculate group"	DORmg	"Positions of its component nuclei are species-dependent, and its functionality is mainy auditory-related."
1.1.3.1.1.1.3.1	Medial geniculate complex	MG	Common auditory input across mammals.
1.1.3.1.1.1.3.1.1	Medial geniculate complex dorsal part	MGd	
1.1.3.1.1.1.3.1.2	Medial geniculate complex ventral part	MGv	
1.1.3.1.1.1.3.1.3	Medial geniculate complex medial part	MGm	
1.1.3.1.1.1.3.2	"Lateral geniculate nucleus, dorsal part"	LGd	"Common across mammals, but the number of layers and patterns of inputs from retina vary. It's position is also species-dependent. In primates it is located dorso-laterally, while in inferior mammals rostrolaterally. LGd belongs to the dorsal thalamus, while LGv to the ventral thalamus."
1.1.3.1.1.1.4	"Dorsal thalamus, posterior group"	DORp	
1.1.3.1.1.1.4.1	Suprageniculate nucleus of the thalamus	SGN	
1.1.3.1.1.1.4.2	Postero-medial nucleus of the thalamus	PM	"Unsure about these two nuclei, they may be the LP. To check Krueger, 1995"
1.1.3.1.1.1.4.3	Postero-lateral nucleus of the thalamus	PL	"Unsure about these two nuclei, they may be the LP and the parafascicular nucleus, respectively. To check Krueger, 1995"
1.1.3.1.1.1.5	Medial and intralaminar nuclei of the dorsal thalamus	DORmi?	The abbreviations of the DOR divisions will be replaced with those used in Sw.-98. Not sure whether all nuclei included in this division are identified across mammals. E.g. parafascicular nucleus.
1.1.3.1.1.1.5.1	Centromedial nucleus of the thalamus	CM	"Is clearly distinguished in higher order mammals, but difficult to recognize it in the lower orders mammals. Need to check whether is the same with the central medial nucleus, in rat (Sw. nomenclatures)."
1.1.3.1.1.1.5.2	Parataenial nucleus of the thalamus	PT	
1.1.3.1.1.1.5.3	Rhomboid nucleus of the thalamus	RH	
1.1.3.1.1.1.5.4	Reuniens nucleus of the thalamus	RE	"In rats at least, this nucles is subdivided in several parts (Sw. nomenclatures)."
1.1.3.1.1.1.5.5	Paraventricular nucleus of the thalamus	PVT	
1.1.3.1.1.1.5.6	Central nucleus of the thalamus	CL	
1.1.3.1.1.1.6	Mediodorsal nucleus of the thalamus	MD	
1.1.3.1.1.1.6.1	Mediodorsal nucleus of the thalamus medial part	MDm	
1.1.3.1.1.1.6.2	Mediodorsal nucleus of the thalamus central part	MDl	sends connections to the dorsal and lateral parts of the prefrontal cortex. Considered as one of the criteria to define the prefrontal cortex.
1.1.3.1.1.1.6.3	Mediodorsal nucleus of the thalamus central part	MDc	
1.1.3.1.1.1.7	Anterior group of the dorsal thalamus	ATN	
1.1.3.1.1.1.7.1	Anteroventral nucleus of the thalamus	AV	
1.1.3.1.1.1.7.2	Anterodorsal nucleus of the thalamus	AD	
1.1.3.1.1.1.7.3	Anteromedial nucleus of the thalamus	AM	
1.1.3.1.1.2	Ventral thalamus	VNT	
1.1.3.1.1.3.1	Reticular nucleus of the thalamus	RT	
1.1.3.1.1.2.2	"Lateral geniculate nucleus, ventral part"	LGv	
1.1.3.1.1.2.3	Zona incerta	ZI	
1.1.3.1.1.3	Epithalamus	EPI	
1.1.3.1.1.3.1	Lateral habenula	LH	
1.1.3.1.1.3.2	Medial habenula	MH	
1.1.3.1.2	Hypothalamus	HY	
1.1.3.1.2.1	Periventricular zone	PVZ	
1.1.3.1.2.1.1	Paraventricular nucleus	PVH	
1.1.3.1.2.1.2	Periventricular preoptic nucleus	PVp	
1.1.3.1.2.1.3	Supraoptic nucleus	SO	
1.1.3.1.2.2	Medial zone	MEZ	
1.1.3.1.2.2.1	Medial preoptic nucleus	MPO	"part of the preoptic part of the medial zone, but being a single nucleus, it replaces the preoptic part."
1.1.3.1.2.2.2	"Medial zone, anterior level"	ANT	
1.1.3.1.2.2.2.1	Anterior preoptic nucleus	APN	In rats it is replaced by several distinct nuclei.
1.1.3.1.2.2.2.2	Anterior hypothalamic nucleus	AHN	
1.1.3.1.2.2.2.3	Suprachiasmatic nucleus	SCH	
1.1.3.1.2.2.3	"Medial zone, tuberal level"	TUB	
1.1.3.1.2.2.3.1	Ventromedial nucleus	VMH	
1.1.3.1.2.2.3.2	Dorsomedial nucleus	DMH	
1.1.3.1.2.2.4	"Medial zone, mammillary level"	MAM	
1.1.3.1.2.2.4.1	Dorsal premammillary nucleus	PMd	
1.1.3.1.2.2.4.2	Ventral premammillary nucleus	PMv	
1.1.3.1.2.2.4.3	Medial mammillary nucleus	MM	
1.1.3.1.2.2.4.4	Lateral mammillary nucleus	LM	
1.1.3.1.2.3	Posterior hypothalamic nucleus	PH	
1.1.3.1.2.4	Lateral zone	LZ	
1.1.3.1.2.5	Lateral hypothalamic area	LHA	
1.1.3.1.2.5.1	Lateral preoptic area	LPO	
1.1.3.1.2.6	Subthalamic nucleus	STN	
1.1.3.1.2.7	Retina	R	
1.1.3.2	Midbrain	MB	
1.1.3.2.1	Substantia nigra	SN	
1.1.3.2.1.1	Substantia nigra pars compacta	SNc	
1.1.3.2.1.1	Substantia nigra pars reticulata	SNr	
1.1.3.2.2	Tectum	TC	
1.1.3.2.2.1	Inferior colliculus	IC	
1.1.3.2.2.2	Superior colliculus	SC	
1.1.3.2.3	Tegmentum	TG	
1.1.3.2.3.1	Ventral tegmental area	VTA	
1.1.3.2.3.2	Periaqueductal gray	PAG	
1.1.3.2.3.3	Red nucleus	RN	
1.1.3.2.3.4	Interpeduncular nuclei	IPN	
1.1.3.2.3.5	Tegmental nuclei	TGN	"Ad-hoc grouping of the tegmental nuclei. These nuclei cross have a midbrain and pons, portion, respectively. The same with the reticular formation, and central gray."
1.1.3.2.4	Pretectal region	PRT	
1.1.3.2.4.1	Anterior pretectal nucleus	APN	
1.1.3.2.4.2	Medial pretectal nucleus	MPT	
1.1.3.2.4.3	Posterior pretectal nucleus	PPN	
1.1.3.2.4.4	Olivary pretectal nucleus	OP	
1.1.3.3	Cerebellum	CB	
1.1.3.3.1	Cerebellar cortex	CBX	
1.1.3.3.1.1	Anterior lobe	ALC	All three lobes may be further subdivided in lobules.
1.1.3.3.1.2	Posterior lobe	PLC	
1.1.3.3.1.3	Flocculonodular lobe	FNL	
1.1.3.3.2	Deep cerebellar nuclei	DCN	
1.1.4	Hindbrain	HB	
1.1.4.1	Pons	P	"Pons includes parts of nuclei, or of regions (i.e. central gray) that begin in the midbrain tegmentum."
1.1.4.2	Superior olive	SO	
1.1.4.2.1	Superior olive lateral part	SOl	
1.1.4.2.2	Superior olive medial part	SOm	
1.1.4.3	Nucleus of the trapezoid body	NTB	
1.1.4.4	Parabrachial nucleus	PB	
1.1.4.5	Kolliker-Fuse nucleus	KF	
1.1.4.6	Locus coeruleus	LC	
1.1.5	Medulla	MY	"The abbreviation is that of the greek myencephalon. As the midbrain tegmentum and pons, medulla includes parts of nuclei or of regions that span across these three divisions, or start in pons and end in it."
1.1.5.1	Nucleus of the solitary tract	NTS	
1.1.5.2	Coclear nuclei	CN	
1.1.5.3	Dorsal cochlear nucleus	DCN	
1.1.5.4	Ventral cochlear nucleus	VCN	
1.1.5.5	Inferior olive	IO	
1.1.5.6	Area postrema	AP	
1.1.6	Spinal cord	SC	
1.2	Peripheric nervous system	PNS	
1.3	Enteric Nervous System	ENS	