視放線。外側膝状体鳥距路
WordNet
- a brief treatise on a subject of interest; published in the form of a booklet (同)pamphlet
- an extended area of land (同)piece of land, piece of ground, parcel of land, parcel
- a system of body parts that together serve some particular purpose
- a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image (同)trace
- the act of drawing a plan or diagram or outline
- the discovery and description of the course of development of something; "the tracing of genealogies"
PrepTutorEJDIC
- 広大な土地(地域),(土地・海・空などの)広がり《+of+名》 / (器官の)管,(神経の)索
- (おもに宗教・政治などの宣伝用の)小冊子,パンフレット
- 跡を追うこと,追跡;透写,複写 / 〈C〉 / 透写(複写)によってできたもの(地図・図案など),透写図
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/02/06 23:03:57」(JST)
[Wiki en表示]
Brain: Optic radiation |
|
Colour-coded diagram showing radiations in quadrants from retinal disc through the brain |
Latin |
radiatio optica |
NeuroNames |
ancil-529 |
The optic radiation (also known as the geniculo-calcarine tract or as the geniculostriate pathway) is a collection of axons from relay neurons in the lateral geniculate nucleus of the thalamus carrying visual information to the visual cortex (also called striate cortex) along the calcarine fissure.
There is one such tract on each side of the brain.
Parts
A distinctive feature of the optic radiations is that they split into two parts on each side:
Source |
Path |
Information |
Damage |
Fibers from the inferior retina (also called "Meyer's loop" or "Archambault's loop") |
must pass through the temporal lobe by looping around the inferior horn of the lateral ventricle. |
Carry information from the superior part of the visual field |
A lesion in the temporal lobe that results in damage to Meyer's loop causes a characteristic loss of vision in a superior quadrant (quadrantanopia or "pie in the sky" defect.) |
Fibers from the superior retina (also called "Baum's loop") |
travel straight back through the parietal lobe to the occipital lobe in the retrolenticular limb of the internal capsule to the visual cortex. |
Carry information from the inferior part of the visual field |
Taking the shorter path, these fibers are less susceptible to damage. |
Right superior quadrantanopia. The areas of the visual field lost in each eye are shown as black areas. This visual field defect is characteristic of damage to
Meyer's loop on the left side of the brain.
Additional images
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Horizontal section of right cerebral hemisphere.
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Diagram of the tracts in the internal capsule.
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3D schematic representation of optic tracts
External links
- Optic+radiation at eMedicine Dictionary
- Kier LE, Staib LH, Davis, LM, Bronen, RA (1 May 2004). "MR Imaging of the Temporal Stem: Anatomic Dissection Tractography of the Uncinate Fasciculus, Inferior Occipitofrontal Fasciculus, and Meyer’s Loop of the Optic Radiation". Am J Neuroradiology 25 (5): 677–691. PMID 15140705. http://www.ajnr.org/cgi/content/abstract/25/5/677. Retrieved 2007-12-19.
- http://www2.umdnj.edu/~neuro/studyaid/Practical2000/Q34.htm
Sensory system: Visual system and eye movement pathways
|
|
Visual perception |
1° (Bipolar cell of Retina) → 2° (Ganglionic cell) → 3° (Optic nerve → Optic chiasm → Optic tract → LGN of Thalamus) → 4° (Optic radiation → Cuneus and Lingual gyrus of Visual cortex → Blobs → Globs)
|
|
Muscles of orbit |
Tracking
|
Smooth pursuit: Parietal lobe · Occipital lobe
Saccade: Frontal eye fields
Nystagmus → Fixation reflex → PPRF
|
|
Horizontal gaze
|
PPRF → Abducens nucleus → MLF → Oculomotor nucleus → Medial rectus muscle
|
|
Vertical gaze
|
Rostral interstitial nucleus → Oculomotor nucleus, Trochlear nucleus → Muscles of orbit
|
|
Vestibulo-ocular reflex
|
Semicircular canal → Vestibulocochlear nerve → Vestibular nuclei → Abducens nucleus → MLF (Vestibulo-oculomotor fibers) → Oculomotor nucleus → Medial rectus muscle
|
|
|
Pupillary reflex |
Pupillary dilation
|
1° (Posterior hypothalamus → Ciliospinal center) → 2° (Superior cervical ganglion) → 3° (Sympathetic root of ciliary ganglion → Nasociliary nerve → Long ciliary nerves → Iris dilator muscle)
|
|
Pupillary light reflex
(constriction)
|
1° (Retina → Optic nerve → Optic chiasm → Optic tract → Pretectal nucleus) → 2° (Edinger-Westphal nucleus) → 3° (Oculomotor nerve → Parasympathetic root of ciliary ganglion → Ciliary ganglion) → (4° Short ciliary nerves → Iris sphincter muscle)
|
|
Accommodation
vergence
|
1° (Retina → Optic nerve → Optic chiasm → Optic tract → Visual cortex → Brodmann area 19 → Pretectal area) → 2° (Edinger-Westphal nucleus) → 3° (Short ciliary nerves → Ciliary ganglion → Ciliary muscle)
|
|
|
Circadian rhythm |
Retina → Hypothalamus (Suprachiasmatic nucleus)
|
|
|
anat (g/a/p)/phys/devp/prot
|
|
proc, drug (S1A/1E/1F/1L)
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|
|
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Human brain: diencephalon (TA A14.1.08, GA 9.807)
|
|
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
|
|
Ventricular system:
Third ventricle |
- recesses:
- Optic recess
- Infundibular recess
- Suprapineal recess
- Pineal recess
- Hypothalamic sulcus
- Tela chorioidea of third ventricle
- Apertures: Interventricular/Monro
|
|
|
anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp
|
noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr
|
proc, drug (N1A/2AB/C/3/4/7A/B/C/D)
|
|
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Human brain, cerebrum, Interior of the cerebral hemispheres—Rostral Basal ganglia and associated structures (TA A14.1.09.321–552, GA 9.832–837)
|
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Basal ganglia |
Grey matter
|
Corpus striatum
|
- striatum: Putamen
- Caudate nucleus
lentiform nucleus: Putamen
- Globus pallidus (GPe
- GPi)
|
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Ventral striatum
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- Nucleus accumbens
- Olfactory tubercle
- Islands of Calleja
|
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Other
|
|
|
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White matter
|
Internal capsule (Anterior limb
- Genu
- Posterior limb
- Optic radiation)
Corona radiata
- External capsule
- Extreme capsule
Pallidothalamic tracts: Thalamic fasciculus (Ansa lenticularis
- Lenticular fasciculus)
- Subthalamic fasciculus
|
|
|
Rhinencephalon |
Grey matter
|
- Anterior olfactory nucleus
- Anterior perforated substance
- Olfactory bulb
|
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White matter
|
- Olfactory tract (Medial olfactory stria
- Lateral olfactory stria)
- Olfactory trigone
|
|
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Other basal forebrain |
Grey matter
|
- Substantia innominata (Basal optic nucleus of Meynert)
- Nucleus of diagonal band
|
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White matter
|
- Diagonal band of Broca
- Stria terminalis
|
|
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Archicortex:
Hippocampal formation/
Hippocampus anatomy |
Grey matter
|
- Hippocampus proper: CA1
- CA2
- CA3
- CA4
Dentate gyrus: Fascia dentata
Subiculum
|
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White matter
|
- Alveus
- Fimbria
- Perforant path
- Schaffer collateral
|
|
|
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anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp
|
noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr
|
proc, drug (N1A/2AB/C/3/4/7A/B/C/D)
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UpToDate Contents
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English Journal
- Geniculocalcarine tract disintegration after ischemic stroke: a diffusion tensor imaging study.
- Zhang Y1, Wan S, Zhang X.
- AJNR. American journal of neuroradiology.AJNR Am J Neuroradiol.2013 Oct;34(10):1890-4. doi: 10.3174/ajnr.A3535. Epub 2013 May 2.
- BACKGROUND AND PURPOSE: Our aim was to investigate the disintegration of the geniculocalcarine tract by using DTI-derived parameters in cases of unilateral occipital or temporal-occipital ischemic stroke with geniculocalcarine tract involvement and to determine whether geniculocalcarine tract fibers
- PMID 23639556
- Intraventricular meningiomas: a consecutive series of 22 patients and literature review.
- Ødegaard KM1, Helseth E, Meling TR.
- Neurosurgical review.Neurosurg Rev.2013 Jan;36(1):57-64; discussion 64. doi: 10.1007/s10143-012-0410-5. Epub 2012 Jul 31.
- Intraventricular meningiomas (IVMs) are rare tumors of which the majority is located in the lateral ventricles. Most published series on the subject includes only a few patients. We analyzed our series of IVMs with a special interest in clinical features, outcome, and complications related to surger
- PMID 22847766
- Diffusion tensor imaging reveals normal geniculocalcarine-tract integrity in acquired blindness.
- Zhang Y1, Wan S, Ge J, Zhang X.
- Brain research.Brain Res.2012 Jun 6;1458:34-9. doi: 10.1016/j.brainres.2012.04.012. Epub 2012 Apr 17.
- We investigated optic nerve and geniculocalcarine tract (GCT) in acquired blindness (AB) using routine cranium magnetic resonance imaging and diffusion tensor imaging. Twenty individuals with AB were compared with 20 normally sighted (NS) individuals. The transverse diameters of optic nerves in NS w
- PMID 22560504
Related Links
- The optic radiation (also known as the geniculo-calcarine tract or as the geniculostriate pathway) is a collection of axons from relay neurons in the lateral geniculate nucleus of the thalamus carrying visual information to the visual cortex (also ...
- optic radiation. (redirected from Geniculocalcarine tract). Also found in: Dictionary /thesaurus, Wikipedia, 0.01 sec. optic radiation. n. The massive fanlike fiber system passing from the lateral geniculate body of the thalamus to the visual cortex.
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★リンクテーブル★
[★]
- 英
- optic radiation
- ラ
- radiatio optica
- 同
- 視線維放射、視放射、外側膝状体鳥距路 geniculocalcarine tract
[★]
- 英
- geniculocalcarine tract
- 関
- 視放線
[★]
- 関
- chase、follow up、follow-up、pursue、pursuit、trace
[★]
- 関
- tractus