後縦束
WordNet
- running lengthwise; "a thin longitudinal strip"; "longitudinal measurements of the hull"
- of or relating to lines of longitude; "longitudinal reckoning by the navigator"
- over an extended time; "a longitudinal study of twins"
- belonging to or on or near the back or upper surface of an animal or organ or part; "the dorsal fin is the vertical fin on the back of a fish and certain marine mammals"
PrepTutorEJDIC
- 経度の / 長さの;縦の
- (植物の)背部の,背の
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/12/03 07:05:32」(JST)
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| Dorsal longitudinal fasciculus |
| Details |
| Latin |
fasciculus longitudinalis posterior; fasciculus longitudinalis dorsalis |
| Identifiers |
| NeuroLex ID |
Dorsal longitudinal fasciculus |
| TA |
A14.1.05.305 |
| FMA |
72492 |
| Anatomical terms of neuroanatomy |
The dorsal longitudinal fasciculus (DLF) (not to be confused with the medial longitudinal fasciculus, nor the superior longitudinal fasciculus) is a white matter fiber tract located within the brain stem, specifically in the dorsal brainstem tegmentum. The DLF travels through the periaqueductal gray matter. The tract is composed of a diffuse brainstem pathway located in the periventricular gray matter comprising ascending visceral sensory axons and descending hypothalamic axons.
As with all white matter tracts, the DLF consists of myelinated axons carrying information between neurons. The DLF, carries both ascending and descending fibers, and conveys visceral motor and sensory signals.
Contents
- 1 Ascending fibers
- 2 Descending fibers
- 3 References
- 4 Notes
- 5 External links
Ascending fibers
The DLF ascending tract has its origins in nuclei of the reticular formation. These fibers synapse onto the hypothalamus and carry visceral information to the brain.
Brainstem afferents in DLF include fibers coming from the parabrachial area, which conveys taste & general visceral sensation to the hypothalamus from the nucleus of the tractus solitarius in the medulla. Afferents distribute to the posterior nucleus and periventricular nuclei of the hypothalamus.
Descending fibers
The descending portion of the DLF originates in the hypothalamus. These fibers then descend through the brain stem periaqueductal gray matter along the base of the fourth ventricle. These fibers continue on into the spinal cord where they synapse with preganglionic autonomic neurons.
Hypothalamic efferents in DLF arise from the paraventricular nucleus, supraoptic nucleus and periventricular nucleus, and send information to multiple areas, including:
- 1) midbrain central gray for pain modulation,
- 2) the medullary autonomic centers for heart rate, blood pressure, and respiration,
- 3) the ventral tegmental area,
- 4) brainstem parasympathetic nuclei (dorsal motor nucleus of the Vagus and salivatory nuclei for the eyes),
- 5) thoraco-lumbar preganglionic sympathetic neurons, and
- 6) lumbo-sacral preganglionic parasympathetic neurons.
Note that at least some of the output from the hypothalamus lies outside of the DLF, within a set of Descending Hypothalamic Fibers running next to the spinothalamic tract; lesions of this area canonically lead to ipsilateral Horner's syndrome.
References
- Kiernan JA. (2005). Barr's The Human Nervous System: An Anatomical Viewpoint, 8th Ed. Lippincott Williams & Wilkins. ISBN 0-7817-5154-3.
- http://www.sylvius.com/index/d/dorsal_longitudinal_fasciculus.html
Notes
External links
- NIF Search - Dorsal longitudinal fasciculus via the Neuroscience Information Framework
|
Anatomy of the medulla
|
|
| Grey matter |
| Cranial nuclei |
| afferent: |
- Solitary nucleus
- tract
- Dorsal respiratory group
- Gustatory nucleus
- Vestibular nuclei
|
|
| efferent: |
- Hypoglossal nucleus
- Nucleus ambiguus
- Dorsal nucleus of vagus nerve
- Inferior salivatory nucleus
|
|
|
| Dorsal |
- Gracile nucleus
- Cuneate nucleus
- Accessory cuneate nucleus
|
|
| Ventral |
-
- Ventral respiratory group
- Arcuate nucleus of medulla
- Rostral ventromedial medulla
|
|
|
| White matter |
| Dorsal |
- Sensory
- Sensory decussation
- Medial lemniscus
- Juxtarestiform body
- Ascending dorsal longitudinal fasciculus
- Medial longitudinal fasciculus
- Motor
- Descending dorsal longitudinal fasciculus
- Medial longitudinal fasciculus
|
|
| Ventral |
- Descending tracts
- Olivocerebellar tract
- Rubro-olivary tract
|
|
|
| Surface |
| Front |
- Pyramid
- decussation
- Anterior median fissure
- Anterolateral sulcus
- Olive
|
|
| Back |
- Posterior median sulcus
- Posterolateral sulcus
- Area postrema
- Vagal trigone
- Hypoglossal trigone
- Medial eminence
- Inferior cerebellar peduncle
|
|
|
| Grey |
- Reticular formation
- Gigantocellular
- Parvocellular
- Ventral
- Lateral
- Paramedian
- Raphe nuclei
|
|
|
Index of the central nervous system
|
|
| Description |
- Anatomy
- meninges
- cortex
- association fibers
- commissural fibers
- lateral ventricles
- basal ganglia
- diencephalon
- mesencephalon
- pons
- cerebellum
- medulla
- spinal cord
- Physiology
- Development
|
|
| Disease |
- Addiction
- Cerebral palsy
- Meningitis
- Demyelinating diseases
- Seizures and epilepsy
- Headache
- Stroke
- Sleep
- Congenital
- Injury
- Neoplasms and cancer
- Other
- Symptoms and signs
- head and neck
- eponymous
- lesions
- Tests
|
|
| Treatment |
- Procedures
- Drugs
- general anesthetics
- analgesics
- dependence
- epilepsy
- cholinergics
- migraine
- Parkinson's
- vertigo
- other
|
|
|
|
Anatomy of the pons
|
|
Dorsal/
(tegmentum) |
| Surface |
- Cerebellopontine angle
- Superior medullary velum
- Sulcus limitans
- Medial eminence
- Facial colliculus
|
|
| White: Sensory |
- Trapezoid body
- Trigeminal lemniscus
- Dorsal trigeminal tract
- Ventral trigeminal tract
- Medial lemniscus
- Lateral lemniscus
- Medial longitudinal fasciculus
- Vestibulo-oculomotor fibers
- Anterior trigeminothalamic tract
- Central tegmental tract
|
|
| White: Motor |
- Inferior cerebellar peduncle
- Vestibulocerebellar tract
- Medial longitudinal fasciculus
- Vestibulospinal tract
- Medial vestibulospinal tract
- Lateral vestibulospinal tract
|
|
| Grey: Cranial nuclei |
| afferent: |
- GSA
- Cochlear nucleus
- Vestibular nuclei
|
|
| efferent: |
- SVE: Trigeminal motor nucleus
- Facial motor nucleus
- GSE: Abducens nucleus
- GVE: Superior salivary nucleus
|
|
| Other |
- Apneustic center
- Pneumotaxic center
- Medial parabrachial nucleus
- Lateral parabrachial nucleus
- Superior olivary nucleus
- Caerulean nucleus
|
|
|
|
Ventral/
(base) |
| Grey |
|
|
| White: Motor/descending |
- Corticospinal tract
- Corticobulbar tract
- Corticopontine fibers
- MCP
|
|
| Surface |
|
|
|
Other grey: Raphe/
reticular |
- Reticular formation
- Caudal
- Oral
- Tegmental
- Paramedian
- Raphe nuclei
|
|
|
Index of the central nervous system
|
|
| Description |
- Anatomy
- meninges
- cortex
- association fibers
- commissural fibers
- lateral ventricles
- basal ganglia
- diencephalon
- mesencephalon
- pons
- cerebellum
- medulla
- spinal cord
- Physiology
- Development
|
|
| Disease |
- Addiction
- Cerebral palsy
- Meningitis
- Demyelinating diseases
- Seizures and epilepsy
- Headache
- Stroke
- Sleep
- Congenital
- Injury
- Neoplasms and cancer
- Other
- Symptoms and signs
- head and neck
- eponymous
- lesions
- Tests
|
|
| Treatment |
- Procedures
- Drugs
- general anesthetics
- analgesics
- dependence
- epilepsy
- cholinergics
- migraine
- Parkinson's
- vertigo
- other
|
|
|
|
Anatomy of the diencephalon of the human brain
|
|
| Epithalamus |
| Surface |
- Pineal gland
- Habenula
- Habenular trigone
- Habenular commissure
|
|
| Grey matter |
- Pretectal area
- Habenular nuclei
- Subcommissural organ
|
|
|
| Thalamus |
| Surface |
- Stria medullaris of thalamus
- Thalamic reticular nucleus
- Taenia thalami
|
|
Grey matter/
nuclei |
- paired: AN
- Ventral
- Lateral
- Metathalamus
- midline: MD
- Intralaminar
- Midline nuclear group
- Interthalamic adhesion
|
|
| White matter |
- Mammillothalamic fasciculus
- Pallidothalamic tracts
- Ansa lenticularis
- Lenticular fasciculus
- Thalamic fasciculus
- PCML
- Medial lemniscus
- Trigeminal lemniscus
- Spinothalamic tract
- Lateral lemniscus
- Dentatothalamic tract
- Acoustic radiation
- Optic radiation
- Subthalamic fasciculus
- Anterior trigeminothalamic tract
|
|
|
| Hypothalamus |
| Surface |
- Median eminence/Tuber cinereum
- Mammillary body
- Infundibulum
|
|
| Grey matter |
| Autonomic zones |
- Anterior (parasympathetic/heat loss)
- Posterior (sympathetic/heat conservation)
|
|
| Endocrine |
- posterior pituitary: Paraventricular
- Magnocellular neurosecretory cell
- Parvocellular neurosecretory cell
- Supraoptic
- other: Arcuate (dopamine/GHRH)
- Preoptic (GnRH)
- Suprachiasmatic (melatonin)
|
|
| Emotion |
- Lateral
- Ventromedial
- Dorsomedial
|
|
|
| White matter |
- afferent
- Medial forebrain bundle
- Retinohypothalamic tract
- efferent
- Mammillothalamic fasciculus
- Stria terminalis
- Dorsal longitudinal fasciculus
|
|
| Pituitary |
- Posterior is diencephalon, but anterior is glandular
|
|
|
| Subthalamus |
- Subthalamic nucleus
- Zona incerta
|
|
|
Index of the central nervous system
|
|
| Description |
- Anatomy
- meninges
- cortex
- association fibers
- commissural fibers
- lateral ventricles
- basal ganglia
- diencephalon
- mesencephalon
- pons
- cerebellum
- medulla
- spinal cord
- Physiology
- Development
|
|
| Disease |
- Addiction
- Cerebral palsy
- Meningitis
- Demyelinating diseases
- Seizures and epilepsy
- Headache
- Stroke
- Sleep
- Congenital
- Injury
- Neoplasms and cancer
- Other
- Symptoms and signs
- head and neck
- eponymous
- lesions
- Tests
|
|
| Treatment |
- Procedures
- Drugs
- general anesthetics
- analgesics
- dependence
- epilepsy
- cholinergics
- migraine
- Parkinson's
- vertigo
- other
|
|
|
|
Brain and spinal cord: neural tracts and fasciculi
|
|
Sensory/
ascending |
| PCML |
| 1°: |
- Pacinian corpuscle/Meissner's corpuscle → Posterior column (Gracile fasciculus/Cuneate fasciculus) → Gracile nucleus/Cuneate nucleus
|
|
| 2°: |
- → sensory decussation/arcuate fibers (Posterior external arcuate fibers, Internal arcuate fibers) → Medial lemniscus/Trigeminal lemniscus → Thalamus (VPL, VPM)
|
|
| 3°: |
- → Posterior limb of internal capsule → Postcentral gyrus
|
|
|
Anterolateral/
pain |
| Fast/lateral |
- 1° (Free nerve ending → A delta fiber) → 2° (Anterior white commissure → Lateral and Anterior Spinothalamic tract → Spinal lemniscus → VPL of Thalamus) → 3° (Postcentral gyrus) → 4° (Posterior parietal cortex)
2° (Spinomesencephalic tract → Superior colliculus of Midbrain tectum)
|
|
| Slow/medial |
- 1° (Group C nerve fiber → Spinoreticular tract → Reticular formation) → 2° (MD of Thalamus) → 3° (Cingulate cortex)
|
|
|
|
Motor/
descending |
| Pyramidal |
- flexion: Primary motor cortex → Posterior limb of internal capsule → Decussation of pyramids → Corticospinal tract (Lateral, Anterior) → Neuromuscular junction
|
|
| Extrapyramidal |
| flexion: |
- Primary motor cortex → Genu of internal capsule → Corticobulbar tract → Facial motor nucleus → Facial muscles
|
|
| flexion: |
- Red nucleus → Rubrospinal tract
|
|
| extension: |
- Vestibulocerebellum → Vestibular nuclei → Vestibulospinal tract
|
|
| extension: |
- Vestibulocerebellum → Reticular formation → Reticulospinal tract
|
|
- Midbrain tectum → Tectospinal tract → muscles of neck
|
|
|
| Basal ganglia |
| direct: |
1° (Motor cortex → Striatum) → 2° (GPi) → 3° (Lenticular fasciculus/Ansa lenticularis → Thalamic fasciculus → VL of Thalamus) → 4° (Thalamocortical radiations → Supplementary motor area) → 5° (Motor cortex)
|
|
| indirect: |
1° (Motor cortex → Striatum) → 2° (GPe) → 3° (Subthalamic fasciculus → Subthalamic nucleus) → 4° (Subthalamic fasciculus → GPi) → 5° (Lenticular fasciculus/Ansa lenticularis → Thalamic fasciculus → VL of Thalamus) → 6° (Thalamocortical radiations → Supplementary motor area) → 7° (Motor cortex)
|
|
| nigrostriatal pathway: |
|
|
|
|
| Cerebellar |
| Afferent |
- Vestibular nuclei → Vestibulocerebellar tract → ICP → Cerebellum → Granule cell
- Pontine nuclei → Pontocerebellar fibers → MCP → Deep cerebellar nuclei → Granule cell
- Inferior olivary nucleus → Olivocerebellar tract → ICP → Hemisphere → Purkinje cell → Deep cerebellar nuclei
|
|
| Efferent |
- Dentate nucleus in Lateral hemisphere/pontocerebellum → SCP → Dentatothalamic tract → Thalamus (VL) → Motor cortex
- Interposed nucleus in Intermediate hemisphere/spinocerebellum → SCP → Reticular formation, or → Cerebellothalamic tract → Red nucleus → Thalamus (VL) → Motor cortex
- Fastigial nucleus in Flocculonodular lobe/vestibulocerebellum → Vestibulocerebellar tract → Vestibular nuclei
|
|
Bidirectional:
Spinocerebellar |
Unconscious
proprioception |
- lower limb → 1° (muscle spindles → DRG) → 2° (Posterior thoracic nucleus → Dorsal/posterior spinocerebellar tract → ICP → Cerebellar vermis)
- upper limb → 1° (muscle spindles → DRG) → 2° (Accessory cuneate nucleus → Cuneocerebellar tract → ICP → Anterior lobe of cerebellum)
|
|
| Reflex arc |
- lower limb → 1° (Golgi tendon organ) → 2° (Ventral/anterior spinocerebellar tract→ SCP → Cerebellar vermis)
- upper limb → 1° (Golgi tendon organ) → 2° (Rostral spinocerebellar tract → ICP → Cerebellum)
|
|
|
|
|
Index of the central nervous system
|
|
| Description |
- Anatomy
- meninges
- cortex
- association fibers
- commissural fibers
- lateral ventricles
- basal ganglia
- diencephalon
- mesencephalon
- pons
- cerebellum
- medulla
- spinal cord
- Physiology
- Development
|
|
| Disease |
- Addiction
- Cerebral palsy
- Meningitis
- Demyelinating diseases
- Seizures and epilepsy
- Headache
- Stroke
- Sleep
- Congenital
- Injury
- Neoplasms and cancer
- Other
- Symptoms and signs
- head and neck
- eponymous
- lesions
- Tests
|
|
| Treatment |
- Procedures
- Drugs
- general anesthetics
- analgesics
- dependence
- epilepsy
- cholinergics
- migraine
- Parkinson's
- vertigo
- other
|
|
|
UpToDate Contents
全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.
English Journal
- Language, aging, and cognition: frontal aslant tract and superior longitudinal fasciculus contribute toward working memory performance in older adults.
- Rizio AA1, Diaz MT.
- Neuroreport.Neuroreport.2016 Jun 15;27(9):689-93. doi: 10.1097/WNR.0000000000000597.
- Previous research has documented change in white matter tract integrity with increasing age. Both interhemispheric and intrahemispheric tracts that underlie language processing are susceptible to these age-related changes. The aim of the current study was to explore age and white matter integrity in
- PMID 27138951
- The pace of vocabulary growth during preschool predicts cortical structure at school age.
- Asaridou SS1, Demir-Lira ÖE2, Goldin-Meadow S3, Small SL4.
- Neuropsychologia.Neuropsychologia.2016 May 19. pii: S0028-3932(16)30170-1. doi: 10.1016/j.neuropsychologia.2016.05.018. [Epub ahead of print]
- Children vary greatly in their vocabulary development during preschool years. Importantly, the pace of this early vocabulary growth predicts vocabulary size at school entrance. Despite its importance for later academic success, not much is known about the relation between individual differences in e
- PMID 27212056
- Subcomponents and connectivity of the superior longitudinal fasciculus in the human brain.
- Wang X1,2, Pathak S3, Stefaneanu L1, Yeh FC4, Li S2, Fernandez-Miranda JC5.
- Brain structure & function.Brain Struct Funct.2016 May;221(4):2075-92. doi: 10.1007/s00429-015-1028-5. Epub 2015 Mar 18.
- The subcomponents of the human superior longitudinal fasciculus (SLF) are disputed. The objective of this study was to investigate the segments, connectivity and asymmetry of the SLF. We performed high angular diffusion spectrum imaging (DSI) analysis on ten healthy adults. We also conducted fiber t
- PMID 25782434
Japanese Journal
- Tyrosine Hydroxylase (TH)- and Aromatic-L-Amino Acid Decarboxylase (AADC)-Immunoreactive Neurons of the Common Marmoset (Callithrix jacchus) Brain : An Immunohistochemical Analysis
- Karasawa Nobuyuki,Hayashi Motoharu,Yamada Keiki,Nagatsu Ikuko,Iwasa Mineo,Takeuchi Terumi,Uematsu Mitsutoshi,Watanabe Kazuko,Onozuka Minoru
- Acta histochemica et cytochemica = Official Journal of the Japan Society of Histochemistry and Cytochemistry 40(1-6), 83-92, 2007
- … TH-immunoreactive (IR) neurons (but not AADC-IR) neurons were observed in the olfactory tubercle, preoptic suprachiasmatic nucleus, periventricular hypothalamic nucleus, arcuate nucleus, paraventricular nucleus, periaqueductal gray matter, medial longitudinal fasciculus,substantia nigra, and nucleus solitaris. … and the medulla oblongata, including the dorsal area of the nucleus solitaris and the medullary reticular nucleus. …
- NAID 110006633418
Related Links
- dor·sal lon·gi·tu·di·nal fas·cic·u·lus [TA] a bundle of thin, poorly myelinated nerve fibers reciprocally connecting the periventricular zone of the hypothalamus with ventral parts of the central gray substance of the midbrain. Synonym(s): fasciculus longitudinalis posterior ...
- Looking for online definition of dorsal longitudinal fasciculus in the Medical Dictionary? dorsal longitudinal fasciculus explanation free. What is dorsal longitudinal fasciculus? Meaning of dorsal longitudinal fasciculus medical term ...
★リンクテーブル★
[★]
- 英
- posterior longitudinal fasciculus, dorsal longitudinal fasciculus
[★]
- 同
- dorsal longitudinal fasciculus
[★]
- 関
- long-term、longitudinally
[★]
- 関
- dorsally、dorsum、notal
[★]
束
- 関
- bundle、fascicle、fasciculi