Periaqueductal Gray
Hierarchy level in atlas is 5: 4 superstructures include it.
abbreviation: PAGAbbreviation
PAG
Species
Rat
Description of part
Recent work has clarified the structural organization of the rat PAG, which is that part of the brain central gray within the midbrain. The basic parcellation of the caudal three-quarters of the PAG follows Beitz (1985).
Part type
gray matter
Nomenclature
Swanson-1998
Endorsement
The approach used by the collator Mihail Bota is endorsed by the author of the nomenclature.
Collator argument
The position of this brain part in hierarchy was collated from the associated reference
Reference
Author:
Swanson LW
Title of Book:
Brain Maps: Structure of the Rat Brain
Year:
1998
Pages:
196-213
Edition:
second
Publisher:
Elsevier
- Brain
- Midbrain-Hindbrain
- Midbrain-Hindbrain, Sensory
- Midbrain-Hindbrain, Sensory, Somatosensory
- Paratrigeminal nucleus
- Mesencephalic nucleus of the trigeminal
- Nucleus z
- External cuneate nucleus
- Dorsal column nuclei
- Trigeminal ganglion
- Spinal nucleus of the trigeminal
- Spinal nucleus of the trigeminal interpolar part
- Spinal nucleus of the trigeminal oral part
- Spinal nucleus of the trigeminal oral part middle dorsomedial part, dorsal zone
- Spinal nucleus of the trigeminal oral part caudal dorsomedial part
- Spinal nucleus of the trigeminal oral part rostral dorsomedial part
- Spinal nucleus of the trigeminal oral part ventrolateral part
- Spinal nucleus of the trigeminal oral part middle dorsomedial part, ventral zone
- Spinal nucleus of the trigeminal caudal part
- Principal sensory nucleus of the trigeminal
- Midbrain-Hindbrain, Sensory, Gustatory-Visceral
- Area postrema
- Nucleus of the solitary tract
- Parabrachial nucleus
- Parabrachial nucleus lateral division
- Parabrachial nucleus lateral division extreme lateral part
- Parabrachial nucleus lateral division external lateral part
- Parabrachial nucleus lateral division superior lateral part
- Parabrachial nucleus lateral division central lateral part
- Parabrachial nucleus lateral division ventral lateral part
- Parabrachial nucleus lateral division dorsal lateral part
- Parabrachial nucleus lateral division internal lateral part
- Kolliker-Fuse subnucleus
- Parabrachial nucleus medial division
- Parabrachial nucleus lateral division
- Midbrain-Hindbrain, Sensory, Visual
- Pretectal region
- Lateral terminal nucleus of the accessory optic tract
- Parageminal nucleus
- Medial terminal nucleus of the accessory optic tract
- Superior colliculus
- Dorsal terminal nucleus of the accessory optic tract
- Midbrain-Hindbrain, Sensory, Auditory
- Nucleus of the trapezoid body
- Nucleus of the lateral lemniscus
- Nucleus of the brachium of the inferior colliculus
- Superior olivary complex
- Nucleus sagulum
- Inferior colliculus
- Cochlear nuclei
- Midbrain-Hindbrain, Sensory, Vestibular
- Midbrain-Hindbrain, Sensory, Somatosensory
- Pre-Post Cerebellar nuclei
- Reticular core
- Interpeduncular nucleus
- Reticular formation
- Paragigantocellular reticular nucleus
- Pontine reticular nucleus
- Mesencephalic reticular nucleus
- Supratrigeminal nucleus
- Medullary reticular nucleus
- Cuneiform nucleus
- Gigantocellular reticular nucleus
- Parapyramidal nucleus
- Magnocellular reticular nucleus
- Parvicellular reticular nucleus
- Pedunculopontine nucleus
- Central gray of the brain
- Raphe of mesenchephalon
- Midbrain-Hindbrain, Motor
- Midbrain-Hindbrain, Motor, Pharynx-Larynx-Esophagus
- Midbrain-Hindbrain, Motor, Tongue
- Midbrain-Hindbrain, Motor, Extrapyramidal
- Midbrain-Hindbrain, Motor, Eye
- Midbrain-Hindbrain, Motor, Neck
- Midbrain-Hindbrain, Motor, Face
- Midbrain-Hindbrain, Motor, Labyrinth
- Midbrain-Hindbrain, Motor, Jaw
- Midbrain-Hindbrain, Motor, Viscera
- Midbrain-Hindbrain, Sensory
- Lateral ventricle
- Interventricular foramen
- Cerebrum
- Cerebral cortex
- Layer 6b(layer 7, subplate, deep cortex, claustral complex)
- Cerebral cortex, layers1-6a [cortical plate]
- Auditory areas
- Ectorhinal area
- Gustatory areas
- Retrosplenial area
- Somatic motor areas
- Perirhinal area
- Posterior parietal association areas
- Prelimbic area
- Visual areas
- Hippocampal formation
- Ventral temporal association areas
- Visceral area
- Anterior cingulate area
- Orbital area
- Infralimbic area
- Agranular insular area
- Somatosensory areas
- Olfactory areas
- Taenia tecta
- Postpiriform transition area
- Cortical nucleus of the amygdala
- Accessory olfactory bulb
- Anterior olfactory nucleus
- Piriform area
- Main olfactory bulb
- Nucleus of the lateral olfactory tract
- Piriform-amygdaloid area
- Basal Nuclei
- Pallidum
- Pallidum ventral region
- Pallidum dorsal region
- Pallidum rostral region
- Bed nucleus of the stria medularis
- Bed nucleus of the anterior commissure
- Bed nuclei of the stria terminalis
- Bed nuclei of the stria terminalis posterior division
- Bed nuclei of the stria terminalis posterior division transverse nucleus
- Bed nuclei of the stria terminalis posterior division dorsal nucleus
- Bed nuclei of the stria terminalis posterior division cell-sparse zone
- Bed nuclei of the stria terminalis posterior division premedullary nucleus
- Bed nuclei of the stria terminalis posterior division interfascicular nucleus
- Bed nuclei of the stria terminalis posterior division strial extension
- Bed nuclei of the stria terminalis posterior division principal nucleus
- Bed nuclei of the stria terminalis anterior division
- Bed nuclei of the stria terminalis anterior division anteroventral area
- Bed nuclei of the stria terminalis anterior division ventral nucleus
- Bed nuclei of the stria terminalis oval nucleus
- Bed nuclei of the stria terminalis anterior division dorsomedial nucleus
- Bed nuclei of the stria terminalis anterolateral area
- Bed nuclei of the stria terminalis anterior division magnocellular nucleus
- Bed nuclei of the stria terminalis anterior division dorsolateral nucleus
- Bed nuclei of the stria terminalis, anterior division, subcommisural zone
- Bed nuclei of the stria terminalis anterior division fusiform nucleus
- Bed nuclei of the stria terminalis rhomboid nucleus
- Bed nuclei of the stria terminalis anterior division anterodorsal area
- Bed nuclei of the stria terminalis juxtacapsular nucleus
- Bed nuclei of the stria terminalis posterior division
- Striatum
- Striatum medial (septal) region
- Lateral septal complex
- Lateral septal nucleus
- Lateral septal nucleus caudal (caudodorsal) part
- Lateral septal nucleus caudal (caudodorsal) part dorsal zone
- Lateral septal nucleus caudal (caudodorsal) part dorsal zone dorsal region
- Lateral septal nucleus caudal (caudodorsal) part dorsal zone ventral region
- Lateral septal nucleus caudal (caudodorsal) part dorsal zone rostral region
- Lateral septal nucleus caudal (caudodorsal) part dorsal zone lateral region
- Lateral septal nucleus caudal (caudodorsal) part ventral zone
- Lateral septal nucleus caudal (caudodorsal) part dorsal zone
- Lateral septal nucleus rostral (rostroventral) part
- Lateral septal nucleus rostral (rostroventral) part dorsolateral zone
- Lateral septal nucleus rostral (rostroventral) part ventrolateral zone
- Lateral septal nucleus rostral (rostroventral) part medial zone
- Lateral septal nucleus ventral part
- Lateral septal nucleus caudal (caudodorsal) part
- Septofimbrial nucleus
- Septohippocampal nucleus
- Lateral septal nucleus
- Lateral septal complex
- Striatum dorsal region
- Striatum caudal (amygdalar) region
- Central nucleus of amygdala
- Medial nucleus of the amygdala
- Anterior amygdaloid area
- Intercalated nuclei of the amygdala
- Bed nucleus of the accessory olfactory part
- Striatum ventral region
- Striatum medial (septal) region
- Pallidum
- Cerebral cortex
- Cerebral aqueduct
- Pituitary gland
- Brainstem
- Interbrain
- Hypothalamus
- Medial zone of the hypothalamus
- Posterior hypothalamic nucleus
- Mammillary body
- Tuberal area of the hypothalamus
- Anterior hypothalamic area
- Medial preoptic area
- Lateral zone of the hypothalamus
- Periventricular zone of the hypothalamus
- Median preoptic nucleus
- Dorsomedial nucleus of the hypothalamus
- Suprachiasmatic preoptic nucleus
- Posterior periventricular nucleus of the hypothalamus
- Paraventricular nucleus of the hypothalamus
- Paraventricular nucleus of the hypothalamus, descending division
- Paraventricular nucleus of the hypothalamus, descending division, dorsal parvicellular part
- Paraventricular nucleus of the hypothalamus, descending division, medial parvicellular part, ventral zone
- Paraventricular nucleus of the hypothalamus, descending division, forniceal part
- Paraventricular nucleus of the hypothalamus, descending division, lateral parvicellular part
- Paraventricular nucleus of the hypothalamus, parvicellular division
- Paraventricular nucleus of the hypothalamus, magnocellular division
- Paraventricular nucleus of the hypothalamus, descending division
- Anterior periventricular nucleus of the hypothalamus
- Intermediate periventricular nucleus of the hypothalamus
- Supraoptic nucleus
- Anteroventral periventricular nucleus
- Arcuate nucleus of the hypothalamus
- Preoptic periventricular nucleus
- Vascular organ of the lamina terminalis
- Pituitary gland, neural lobe
- Medial zone of the hypothalamus
- Retina
- Thalamus
- Dorsal Thalamus
- Anterior group of the dorsal thalamus
- Medial group of the dorsal thalamus
- Ventral group of the dorsal thalamus
- Geniculate group of the dorsal thalamus
- Midline group of the dorsal thalamus
- Intralaminar nuclei of the dorsal thalamus
- Lateral group of the dorsal thalamus
- Subfornical organ
- Ventral thalamus
- Epithalamus
- Dorsal Thalamus
- Hypothalamus
- Interbrain
- Cerebellum
- Arbor vitae
- Cerebellar cortex
- Deep cerebellar nuclei
- Cerebellar commissure
- Cerebellar peduncles
- Third ventricle
- Fourth ventricle
- Midbrain-Hindbrain
Major subparts
| Name | Type |
| Periaqueductal gray dorsal division | gray matter |
| Periaqueductal gray rostromedial division | gray matter |
| Periaqueductal gray ventrolateral division | gray matter |
| Precommissural nucleus | gray matter |
| Commissural nucleus | gray matter |
| Periaqueductal gray medial division | gray matter |
| Periaqueductal gray rostrolateral division | gray matter |
| Periaqueductal gray dorsolateral division | gray matter |
- Projection Strength
- Medial terminal nucleus of the accessory optic tract moderate
- Superior colliculus moderate
- Pontine reticular nucleus caudal part moderate
- Dorsal tegmental nucleus moderate
- Substantia nigra reticular part moderate
- Prelimbic area moderate
- Anterior cingulate area ventral part moderate
- Anterior cingulate area dorsal part moderate
- Orbital area ventrolateral part moderate
- Orbital area medial part moderate
- Infralimbic area moderate
- Magnocellular preoptic nucleus moderate
- Nucleus of the diagonal band moderate
- Dorsal premammillary nucleus moderate
- Ventromedial nucleus of the hypothalamus moderate
- Anterior hypothalamic area moderate
- Medial preoptic area moderate
- Lateral preoptic area moderate
- Lateral hypothalamic area moderate
- Ventral posterior complex of the thalamus moderate
- Dorsal part of the lateral geniculate complex moderate
- Zona incerta moderate
- Subparafascicular nucleus moderate
- Reticular nucleus of the thalamus moderate
- Lateral habenula moderate
- Anterior pretectal nucleus weak
- Retrosplenial area dorsal part weak
- Secondary motor area weak
- Ventral temporal association areas weak
- Substantia innominata weak
- Bed nuclei of the stria terminalis weak
- Caudoputamen weak
- Central nucleus of amygdala weak
- Hypothalamus weak
- Posterior hypothalamic nucleus weak
- Tuberal area of the hypothalamus weak
- Suprachiasmatic nucleus weak
- Medial preoptic nucleus weak
- Dorsomedial nucleus of the hypothalamus weak
- Paraventricular nucleus of the hypothalamus weak
- Arcuate nucleus of the hypothalamus weak
- Central lateral nucleus of the thalamus weak
- Ventral part of the lateral geniculate complex weak
- Mesencephalic reticular nucleus very weak
- Suprageniculate nucleus very weak
- Lateral septal nucleus rostral (rostroventral) part medial zone ventral region exists
- Islands of Calleja exists
- Ventromedial nucleus of the hypothalamus ventrolateral part exists
- Ventromedial nucleus of the hypothalamus dorsomedial part exists
- Subparaventricular zone exists
- Anterior hypothalamic nucleus exists
- Anterior hypothalamic central part exists
- Retrochiasmatic area exists
- Paraventricular nucleus of the hypothalamus, descending division, medial parvicellular part, ventral zone exists
- Paraventricular nucleus of the hypothalamus, parvicellular division, medial parvicellular part, dorsal zone exists
- Projection Strength
- Supraoptic nucleus strong
- Parabrachial nucleus moderate
- Medial terminal nucleus of the accessory optic tract moderate
- Superior colliculus moderate
- Paragigantocellular reticular nucleus lateral part moderate
- Pontine reticular nucleus moderate
- Substantia nigra compact part moderate
- Ventral tegmental area moderate
- Anteroventral preoptic nucleus moderate
- Central medial nucleus of the thalamus moderate
- Cuneate nucleus weak
- Nucleus of the solitary tract weak
- Anterior pretectal nucleus weak
- Parageminal nucleus weak
- Nucleus prepositus weak
- Spinal vestibular nucleus weak
- Paragigantocellular reticular nucleus weak
- Mesencephalic reticular nucleus weak
- Medullary reticular nucleus weak
- Cuneiform nucleus weak
- Gigantocellular reticular nucleus weak
- Pedunculopontine nucleus weak
- Locus coeruleus weak
- Nucleus raphe magnus weak
- Dorsal nucleus raphe weak
- Superior central nucleus raphe weak
- Substantia nigra weak
- Substantia nigra reticular part weak
- Central nucleus of amygdala weak
- Hypothalamus weak
- Interposed nucleus weak
- Lateral terminal nucleus of the accessory optic tract very weak
- Dorsal terminal nucleus of the accessory optic tract very weak
- Nucleus of the lateral lemniscus very weak
- Nucleus of the brachium of the inferior colliculus very weak
- Inferior colliculus external nucleus very weak
- Laterodorsal tegmental nucleus very weak
- Secondary motor area very weak
- Fastigial nucleus very weak
- Dentate nucleus very weak
- Nucleus raphe pallidus exists
- Nucleus raphe pontis exists
- Nucleus raphe obscurus exists
- Superior central nucleus raphe medial part exists
- Hippocampal region exists
- Medial preoptic nucleus exists
- Dorsomedial nucleus of the hypothalamus exists
- Interanteromedial nucleus of the thalamus exists
- Intermediodorsal nucleus of the thalamus exists
- Paraventricular nucleus of the thalamus exists
- Central lateral nucleus of the thalamus exists
