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"
- located at or near or behind a part or near the end of a structure
PrepTutorEJDIC
- 経度の / 長さの;縦の
- 《名詞の前にのみ用いて》(生物学的に,位置が)後ろの,後部の / (時間・順序が)後の;(…より)後の《+『to』+『名』》(later) / しり(buttocks)
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/05/08 10:54:27」(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 |
- 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
- addiction
- 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 |
- 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
- addiction
- epilepsy
- cholinergics
- migraine
- Parkinson's
- vertigo
- other
|
|
|
Anatomy of the diencephalon of the human brain
|
|
Epithalamus |
Surface |
- Pineal body
- 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
- parvocellular
- Supraoptic
- other: Arcuate (dopamine/GHRH)
- Preoptic (GnRH)
- Suprachiasmatic (melatonin)
|
|
Emotion |
- Lateral
- Ventromedial
- Dorsomedial
|
|
|
White matter |
- afferent
- SN → Medial forebrain bundle
- efferent
- Mammillothalamic fasciculus → AN, Stria terminalis → Amygdala, Dorsal longitudinal fasciculus → SC
|
|
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 |
- 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
- addiction
- 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 |
- 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
- addiction
- 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
- Location of brain tumor intersecting white matter tracts predicts patient prognosis.
- Mickevicius NJ1, Carle AB2, Bluemel T2, Santarriaga S2, Schloemer F3, Shumate D3, Connelly J3, Schmainda KM1,2, LaViolette PS4,5.
- Journal of neuro-oncology.J Neurooncol.2015 Sep 16. [Epub ahead of print]
- Brain tumor cells invade adjacent normal brain along white matter (WM) bundles of axons. We therefore hypothesized that the location of tumor intersecting WM tracts would be associated with differing survival. This study introduces a method, voxel-wise survival analysis (VSA), to determine the relat
- PMID 26376654
- [Visualization of Gray Matter Myelin and Fiber Bundles Critical for Relative Pitch: A Role of the Left Posterior Long Insular Cortex].
- Shimizu Y1, Sakai KL.
- Brain and nerve = Shinkei kenkyū no shinpo.Brain Nerve.2015 Sep;67(9):1147-55. doi: 10.11477/mf.1416200274.
- Relative pitch is the ability to identify a tone pitch based on external or internal pitches. Here we used magnetic resonance imaging (MRI) to determine which cortical region is responsible for relative pitch. Forty-eight participants were asked to listen to 24 piano tones, and then write down the n
- PMID 26329156
- Axial Diffusivity in the ILF and IFOF is Related to Autism Symptom Severity.
- Scherf KS, Legault J, Turney I, Elbich D, Minshew N, Behrmann M.
- Journal of vision.J Vis.2015 Sep 1;15(12):639. doi: 10.1167/15.12.639.
- Atypical neural activation within the face-processing network is widely reported in adults and adolescents with autism; and, individual differences in symptom severity predict the magnitude of these atypical responses, particularly within posterior core regions of this network (Scherf et al., 2015).
- PMID 26326327
Japanese Journal
- MR-DTIを用いたアルツハイマー型認知症の白質病変の解析と評価 : 神経線維追跡による研究
- 脳室周囲白質軟化症の重症度と拡散テンソル画像によるFA値との関係
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 ...
- f. longitudinalis posterior ... Look at other dictionaries: longitudinal fasciculus dorsal — f. longitudinalis posterior … Medical dictionary Dorsal longitudinal fasciculus — Brain: Dorsal longitudinal fasciculus Latin fasciculus ...
★リンクテーブル★
[★]
- 英
- posterior longitudinal fasciculus, dorsal longitudinal fasciculus
[★]
- 関
- after、afterward、afterwards、backward、behind、following、late、post、posteriorly、subsequent
[★]
- 関
- long-term、longitudinally
[★]
束
- 関
- bundle、fascicle、fasciculi