縁上回
- 関
- supramarginal convolution、supramarginal gyrus
WordNet
- a convex fold or elevation in the surface of the brain (同)convolution
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/09/17 16:12:51」(JST)
[Wiki en表示]
| Brain: Supramarginal gyrus |
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Lateral view of a human brain, main gyri labeled.
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Lateral surface of left cerebral hemisphere, viewed from the side. (Supramarginal gyrus shown in orange.)
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| Latin |
Gyrus supramarginalis |
| Gray's |
p.823 |
| NeuroNames |
hier-90 |
| NeuroLex ID |
birnlex_1381 |
| TA |
A14.1.09.131 |
| FMA |
FMA:61897 |
The supramarginal gyrus is a portion of the parietal lobe. This area of the brain is also known as Brodmann area 40 based on the universally used brain map created by Korbinian Brodmann to define the structures in the cerebral cortex. It is probably involved with language perception and processing, and lesions in it may cause receptive aphasia.[1]
Contents
- 1 Additional images
- 2 Important Functions
- 3 Relationships to Surrounding Structures
- 4 See also
- 5 References
- 6 External links
Additional images
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Position of supramarginal gyrus (shown in red).
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Gyri in lateral surface of human left cerebral hemisphere. Supramarginal gyrus is shown in green.
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Gyri of human right parietal lobe. Supramarginal gyrus is labeled by *.
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Cerebrum. Lateral view.Deep dissection.
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Cerebrum. Lateral view.Deep dissection.
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Cerebrum. Lateral view.Deep dissection.
Important Functions
The right portion of the surpramarginal gyrus appears to play a central role in controlling our empathy towards other people. When this structure isn't working properly or when we have to make very quick judgments, our empathy becomes severely limited.[2] Research has shown that disrupting the neurons in the right supramarginal gyrus causes humans to project our emotions on other, inhibiting our ability to be empathetic. In addition, this disruption also causes people to be more egocentric, mainly because they aren't able to perceive the emotions of those around them.[3] Both the left and right supramarginal gyri of healthy, right-handed individuals are shown to be active when making phonological word choices.[4] Individuals who had lesions to the left hemisphere had more difficulty than those with lesions to the right hemisphere, reinforcing the dominance of the left hemisphere in language.
Relationships to Surrounding Structures
The supramarginal gyrus is located just dorsal to the angular gyrus allowing these two structures to form a multimodal complex that receives somatosensory, visual, and auditory inputs from the brain.[5] Although the supramarginal gyrus isn't considered a major portion of the language circuit, it still works with the angular gyrus to attempt to link words with meanings. It is also bound caudally by the lateral sulcus, one of the most prominent structures found in the brain.
See also
References
- ^ Gazzaniga, M.S., Ivry, R.B. and Mangun, G.R., Cognitive Neuroscience, the Biology of the Mind, third edition, 2009, W.W. Norton, publishers. pgs. 395–401
- ^ Silani, C. "I'm OK, You're Not OK: Right Supramarginal Gyrus Plays an Important Role in Empathy." ScienceDaily. ScienceDaily, 9 Oct. 2013. Web. 03 July 2014.
- ^ Singer, Tania. "ARE YOU EGOCENTRIC? CHECK YOUR RIGHT SUPRAMARGINAL GYRUS." Degreed, 28 May 2014. Web. 3 July 2014.
- ^ Hartwigsen, Gesa. "Phonological Decisions Require Both the Left and Right Supramarginal Gyri." PNAS. National Academy of Sciences, 11 Aug. 2010. Web. 3 July 2014.
- ^ Dubac, Bruno. "THE BRAIN FROM TOP TO BOTTOM." THE BRAIN FROM TOP TO BOTTOM. McGill, 2002. Web. 03 July 2014.
External links
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Wikimedia Commons has media related to Supramarginal gyrus. |
- http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=108
- http://thebrain.mcgill.ca/flash/a/a_10/a_10_cr/a_10_cr_lan/a_10_cr_lan.html
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Human brain: forebrain (cerebrum, cerebral cortex, cerebral hemispheres, grey matter) (TA A14.1.09.002–240, 301–320, GA 9.818–826)
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| Frontal lobe |
| Superolateral |
| Prefrontal |
- Superior frontal gyrus
- Middle frontal gyrus
- Inferior frontal gyrus: 11l
- 47-Pars orbitalis
- Broca's area
- 44-Pars opercularis
- 45-Pars triangularis
- Superior frontal sulcus
- Inferior frontal sulcus
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| Precentral |
- Precentral gyrus
- Precentral sulcus
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| Medial/inferior |
| Prefrontal |
- Superior frontal gyrus
- Medial frontal gyrus
- Paraterminal gyrus/Paraolfactory area
- Straight gyrus
- Orbital gyri/Orbitofrontal cortex
- Ventromedial prefrontal cortex
- Subcallosal area
- Olfactory sulcus
- Orbital sulci
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| Precentral |
- Paracentral lobule
- Paracentral sulcus
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| Both |
- Primary motor cortex
- Premotor cortex
- Supplementary motor area
- Supplementary eye field
- Frontal eye fields
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| Parietal lobe |
| Superolateral |
- Superior parietal lobule
- Inferior parietal lobule
- 40-Supramarginal gyrus
- 39-Angular gyrus
- Parietal operculum
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| Medial/inferior |
- Paracentral lobule
- Precuneus
- Marginal sulcus
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| Both |
- Postcentral gyrus/primary somatosensory cortex
- Secondary somatosensory cortex
- Posterior parietal cortex
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| Occipital lobe |
| Superolateral |
- Occipital pole of cerebrum
- Lateral occipital gyrus
- Lunate sulcus
- Transverse occipital sulcus
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| Medial/inferior |
- Primary visual cortex
- Cuneus
- Lingual gyrus
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| Temporal lobe |
| Superolateral |
- Transverse temporal gyrus/Primary auditory cortex
- Superior temporal gyrus
- Middle temporal gyrus
- Superior temporal sulcus
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| Medial/inferior |
- Fusiform gyrus
- Medial temporal lobe
- Inferior temporal gyrus
- Inferior temporal sulcus
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Interlobar
sulci/fissures |
| Superolateral |
- Central (frontal+parietal)
- Lateral (frontal+parietal+temporal)
- Parieto-occipital
- Preoccipital notch
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| Medial/inferior |
- Medial longitudinal
- Cingulate (frontal+cingulate)
- Collateral (temporal+occipital)
- Callosal sulcus
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| Limbic lobe |
| Parahippocampal gyrus |
- anterior
- Entorhinal cortex
- Perirhinal cortex
- Posterior parahippocampal gyrus
- Prepyriform area
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| Cingulate cortex/gyrus |
- Subgenual area
- Anterior cingulate
- Posterior cingulate
- Isthmus of cingulate gyrus: Retrosplenial cortex
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| Hippocampal formation |
- Hippocampal sulcus
- Fimbria of hippocampus
- Dentate gyrus
- Rhinal sulcus
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| Other |
- Supracallosal gyrus
- Uncus
- Amygdala
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| Insular lobe |
- Long gyrus of insula
- Short gyri of insula
- Circular sulcus of insula
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| General |
- Operculum
- Poles of cerebral hemispheres
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Some categorizations are approximations, and some Brodmann areas span gyri.
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anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp
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noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr
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proc, drug (N1A/2AB/C/3/4/7A/B/C/D)
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UpToDate Contents
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English Journal
- Development of "material-specific" hemispheric specialization from beginning to end.
- Gingras B1, Braun CMJ1.
- Laterality.Laterality.2018 Jul;23(4):422-440. doi: 10.1080/1357650X.2017.1373780. Epub 2017 Sep 6.
- PMID 28876165
- Association between abnormal serum myelin-specific protein levels and white matter integrity in first-episode and drug-naïve patients with major depressive disorder.
- Jiang L1, Cheng Y1, Jiang H1, Xu J2, Lu J1, Shen Z1, Lu Y3, Liu F1, Li L2, Xu X1.
- Journal of affective disorders.J Affect Disord.2018 May;232:61-68. doi: 10.1016/j.jad.2018.02.044. Epub 2018 Feb 16.
- PMID 29477585
- Structural and functional brain abnormalities in schizophrenia: A cross-sectional study at different stages of the disease.
- Zhao C1, Zhu J2, Liu X1, Pu C3, Lai Y1, Chen L1, Yu X4, Hong N5.
- Progress in neuro-psychopharmacology & biological psychiatry.Prog Neuropsychopharmacol Biol Psychiatry.2018 Apr 20;83:27-32. doi: 10.1016/j.pnpbp.2017.12.017. Epub 2017 Dec 29.
- PMID 29292241
Japanese Journal
- 佐藤 秀之,有松 孟,早見 武人,上野 照剛,伊良皆 啓治
- 電気学会研究会資料. MBE, 医用・生体工学研究会 2008(1), 75-78, 2008-01-25
- NAID 10025658815
- 佐藤 秀之,有松 孟,早見 武人 [他],上野 照剛,伊良皆 啓治
- 電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 107(460), 75-78, 2008-01-18
- 経頭蓋磁気刺激(TMS)は,時間的,空間的に脳の神経活動を制御するものである.本研究では,P300についてさらに詳しく調べるためTMSを使ってP300を計測した.TMS刺激時の脳波は,アーチファクトが大きく測定が困難であったが,脳波計の改良や信号処理により可能となった.今回の実験では,標的刺激後100ms,150ms,200msにわけて縁上回をTMSで刺激した.その結果,それぞれにP300と思われ …
- NAID 110006623841
- 竹之内 弘
- 千葉医学会雑誌 36(3), 759-771, 1960-09-28
- … (1) Sensory aphasia occurs due to a lesion in the nerve center in the central one-third of the area of sinistral gyrus temporalis superior. … Some cases in which the disturbanec involved greater part of the gyrus angularis and gyrus supramarginalis were markedly free from the symptoms of aphasia. … (2) An injury to the gyrus angularis causes agnosia, alexia and apraxia. …
- NAID 110007346234
Related Links
- gyrus [ji´rus] (pl. gy´ri) (L.) one of the many convolutions of the surface of the cerebral hemispheres caused by infolding of the cortex, separated by fissures or sulci; called also cerebral gyrus. angular gyrus one continuous anteriorly ...
- Wernicke's area (W) and surrounding areas, including angular gyrus (AG) and supramarginal gyrus (SG), are heteromodal areas that may be responsible for the integration of spoken and written word forms with arbitrary associations ...
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縁上回
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- gyrus supramarginalis、supramarginal convolution
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縁上回
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- gyrus supramarginalis、supramarginal gyrus