純粋失読症、純粋失読
- 関
- pure alexia、pure alexia without agraphia
WordNet
- a loss of the ability to write or to express thoughts in writing because of a brain lesion (同)anorthography, logagraphia
PrepTutorEJDIC
- 『…なしに』,を持たないで,を使わないで / 《条件を表す句を作って》『もし…がなければ』 / 《動名詞を伴って》『…しないで[は]』,せずに / 《付帯状況のないこと》…しないで / 《古》《場所》『…を外に』 / 《限度》『…[の限度]を越えて』 / 外に,外部に / 外部 / もし…でなければ(unless)
- 失読症(脳が犯され文字・文章が読めなくなる病気)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/01/13 22:42:43」(JST)
[Wiki en表示]
Main article: Alexia (acquired dyslexia)
Pure alexia, also known as agnosic alexia or alexia without agraphia or pure word blindness, is one form of alexia which makes up "the peripheral dyslexia" group.[1] Individuals who have pure alexia suffer from severe reading problems while other language-related skills such as naming, oral repetition, auditory comprehension or writing are typically intact.[2]
Pure alexia is also known as: "alexia without agraphia", [1] "letter-by-letter dyslexia",[3] "spelling dyslexia",[4] or "word-form dyslexia".[5] Another name for it is "Dejerine syndrome", after Joseph Jules Dejerine, who described it in 1892;[6] however, when using this name, it should not be confused with medial medullary syndrome which shares the same eponym.
Classification
Pure alexia results from cerebral lesions in circumscribed brain regions and therefore belongs to the group of acquired reading disorders, alexia,[1] as opposed to developmental dyslexia found in children who have difficulties in learning to read.[7]
Causes
Pure alexia almost always involves an infarct to the left posterior cerebral artery (which perfuses the splenium of the corpus callosum and left visual cortex, among other things). The resulting deficit will be pure alexia - i.e., the patient can write but cannot read (even what they have just written). This is because the left visual cortex has been damaged, leaving only the right visual cortex (occipital lobe) able to process visual information, but it is unable to send this information to the language areas (Broca's area, Wernicke's area, etc.) in the left brain because of the damage to the splenium of the corpus callosum.[8][9] The patient can still write because the pathways connecting the left-sided language areas to the motor areas are intact.[10]
References
- ^ a b c Coslett HB (2000). "Acquired dyslexia". Semin Neurol 20 (4): 419–26. doi:10.1055/s-2000-13174. PMID 11149697.
- ^ Behrmann M, Shomstein SS, Black SE, Barton JJ (2001). "The eye movements of pure alexic patients during reading and nonreading tasks". Neuropsychologia 39 (9): 983–1002. doi:10.1016/S0028-3932(01)00021-5. PMID 11516450.
- ^ Fiset D, Arguin M, Bub D, Humphreys GW, Riddoch MJ (July 2005). "How to make the word-length effect disappear in letter-by-letter dyslexia: implications for an account of the disorder". Psychol Sci 16 (7): 535–41. doi:10.1111/j.0956-7976.2005.01571.x. PMID 16008786.
- ^ Warrington EK, Langdon D (February 1994). "Spelling dyslexia: a deficit of the visual word-form". J. Neurol. Neurosurg. Psychiatr. 57 (2): 211–6. doi:10.1136/jnnp.57.2.211. PMC 1072453. PMID 8126508.
- ^ Warrington EK, Shallice T (March 1980). "Word-form dyslexia". Brain 103 (1): 99–112. doi:10.1093/brain/103.1.99. PMID 6244876.
- ^ Imtiaz KE, Nirodi G, Khaleeli AA (2001). "Alexia without agraphia: a century later". Int. J. Clin. Pract. 55 (3): 225–6. PMID 11351780.
- ^ Temple CM (August 2006). "Developmental and acquired dyslexias". Cortex 42 (6): 898–910. doi:10.1016/S0010-9452(08)70434-9. PMID 17131596.
- ^ Sundsten, John W.; Nolte, John (2001). The human brain: an introduction to its functional anatomy. St. Louis: Mosby. p. 552. ISBN 0-323-01320-1. OCLC 48416194.
- ^ "Baylor Neurology Case of the Month". Archived from the original on 2007-05-10. Retrieved 2007-06-07.
- ^ Nolte, John (2009). The human brain: an introduction to its functional anatomy. St. Louis, Mo: Mosby/Elsevier. p. 571. ISBN 0-323-04131-0. OCLC 181903953.
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Lesions of spinal cord and brain
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|
Spinal cord/
vascular myelopathy |
- sensory: Sensory ataxia
- Tabes dorsalis
- motor: Motor neurone disease
- mixed: Brown-Séquard syndrome
- cord syndrome (Posterior
- Anterior
- Central/Syringomyelia)
- Subacute combined degeneration of spinal cord (B12)
- Cauda equina syndrome
- Anterior spinal artery syndrome
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|
| Brainstem |
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Medulla (CN 8, 9, 10, 12)
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- Lateral medullary syndrome/Wallenberg
- Medial medullary syndrome/Dejerine
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|
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Pons (CN 5, 6, 7, 8)
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- Upper dorsal pontine syndrome/Raymond Céstan syndrome
- Lateral pontine syndrome (AICA) (lateral)
- Medial pontine syndrome/Millard-Gubler syndrome/Foville's syndrome(basilar)
- Locked-in syndrome
- Internuclear ophthalmoplegia
- One and a half syndrome
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|
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Midbrain (CN 3, 4)
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- Weber's syndrome
- Benedikt syndrome
- Parinaud's syndrome
- Nothnagel's syndrome
- Claude's syndrome
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|
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Other
|
|
|
|
| Cerebellum |
- lateral (Dysmetria
- Dysdiadochokinesia
- Intention tremor)
- medial (Cerebellar ataxia)
|
|
| Basal ganglia |
- Chorea
- Dystonia
- Parkinson's disease
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| Cortex |
- ACA syndrome
- MCA syndrome
- PCA syndrome
- frontal lobe: Expressive aphasia
- Abulia
- parietal lobe: Receptive aphasia
- Hemispatial neglect
- Gerstmann syndrome
- Astereognosis
- occipital lobe: Bálint's syndrome
- Cortical blindness
- Pure alexia
- temporal lobe: Cortical deafness
- Prosopagnosia
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| Thalamus |
|
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| Other |
- Subclavian steal syndrome
- Upper motor neurone lesion (Clasp-knife response)
- Lower motor neurone lesion
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Index of the central nervous system
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|
| Description |
- Anatomy
- meninges
- spinal cord
- medulla
- pons
- fourth ventricle
- mesencephalon
- cerebellum
- diencephalon
- cortex
- association fibers
- commissural fibers
- lateral ventricles
- basal ganglia
- Physiology
- Development
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|
| Disease |
- Meninges
- Demylinating diseases
- Seizures and epilepsy
- Headache
- Cerebrovascular
- Sleep
- Congenital
- Injury
- Neoplasms and cancer
- Other
- Symptoms and signs
|
|
| Treatment |
- Procedures
- Drugs
- general anesthetics
- analgesics
- addiction
- anticonvulsants
- cholinergics
- migraine
- parkinson
- vertigo
- other
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|
|
|
Symptoms and signs: Speech and voice / Symptoms involving head and neck (R47–R49, 784)
|
|
| Aphasias |
- Acute Aphasias
- Expressive aphasia
- Receptive aphasia
- Conduction aphasia
- Anomic aphasia
- Global aphasia
- Transcortical sensory aphasia
- Transcortical motor aphasia
- Mixed transcortical aphasia
- Progressive Aphasias
- Progressive nonfluent aphasia
- Semantic dementia
- Logopenic progressive aphasia
- Speech disturbances
- Speech disorder
- Developmental verbal dyspraxia/Apraxia of speech
- Auditory verbal agnosia
- Dysarthria
- Schizophasia
- Aprosodia/Dysprosody
- Specific language impairment
- Thought disorder
- Pressure of speech
- Derailment
- Clanging
- Circumstantiality
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| Communication disorders |
- Developmental dyslexia/Alexia
- Agnosia
- Astereognosis
- Prosopagnosia
- Visual agnosia
- Gerstmann syndrome
- Developmental coordination disorder/Apraxia
- Dyscalculia/Acalculia
- Agraphia
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| Voice disturbances |
- Dysphonia/Aphonia
- Bogart–Bacall syndrome
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| Nose |
- Post-nasal drip
- Epistaxis
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| Mouth |
- Orofacial pain
- Fremitus
- Tooth mobility
- Bruxism
- Trismus
- Ageusia
- Hypogeusia
- Dysgeusia
- Parageusia
- Hypergeusia
- Xerostomia
- Halitosis
- Drooling
- Hypersalivation
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| Neck |
|
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| Other |
- Headache
- Auditory processing disorder
- Otalgia
- Velopharyngeal inadequacy
- Velopharyngeal insufficiency
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Index of psychology and psychiatry
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| Description |
|
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| Disorders |
- Mental and behavioral
- Symptoms and signs
- Evaluation and testing
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| Treatment |
- Psychotherapy
- Drugs
- depression
- antipsychotics
- anxiety
- dementia
- hypnotics and sedatives
- psychostimulants, ADHD drugs and nootropics
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|
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| Description |
|
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| Disease |
- Congenital
- face and neck
- cleft
- digestive system
- Neoplasms and cancer
- Other
- Symptoms and signs
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| Treatment |
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Developmental disorders: Dyslexia and related specific developmental disorders (F80–F83, 315)
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General
conditions |
Speech and
language
impairments /
communication
disorders |
- Expressive language disorder
- Infantile speech
- Landau–Kleffner syndrome
- Language disorder
- Lisp
- Mixed receptive-expressive language disorder
- Specific language impairment
- Speech and language impairment
- Speech disorder
- Speech error
- Speech sound disorder
- Stammering
- Tip of the tongue
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|
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Scholastic skills/
learning disorder
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- Developmental dyslexia
- Dyscalculia
- Dysgraphia (Disorder of written expression)
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|
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Motor function
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- Developmental coordination disorder
- Developmental verbal dyspraxia also known as Childhood apraxia of speech
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Other
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- Auditory processing disorder
- Scotopic sensitivity syndrome
- Sensory processing disorder
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|
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| Related topics |
- Dyslexia research
- Irlen filters
- Learning Ally
- Learning problems in childhood cancer
- Literacy
- Management of dyslexia/Dyslexia interventions
- Multisensory integration
- Neuropsychology
- Reading acquisition
- Spelling
- Writing system
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| Lists |
- Dyslexia in fiction
- Languages by Writing System
- People with dyslexia
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Index of psychology and psychiatry
|
|
| Description |
|
|
| Disorders |
- Mental and behavioral
- Symptoms and signs
- Evaluation and testing
|
|
| Treatment |
- Psychotherapy
- Drugs
- depression
- antipsychotics
- anxiety
- dementia
- hypnotics and sedatives
- psychostimulants, ADHD drugs and nootropics
|
|
|
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.
- 1. 失語症患者へのアプローチ approach to the patient with aphasia
- 2. 後方循環系の脳血管症候群 posterior circulation cerebrovascular syndromes
- 3. 同名半盲 homonymous hemianopia
English Journal
- Word-superiority in pure alexia.
- Starrfelt R, Gerlach C, Habekost T, Leff AP.SourceCenter for Visual Cognition, Department of Psychology, University of Copenhagen, Copenhagen, Denmark.
- Behavioural neurology.Behav Neurol.2013 Jan 1;26(3):167-9. doi: 10.3233/BEN-2012-129002.
- PMID 22713414
- Bilateral Hemispheric Processing of Words and Faces: Evidence from Word Impairments in Prosopagnosia and Face Impairments in Pure Alexia.
- Behrmann M, Plaut DC.SourceDepartment of Psychology, Center for the Neural Basis of Cognition, Carnegie Mellon University, Pittsburgh, PA 15213-3890, USA.
- Cerebral cortex (New York, N.Y. : 1991).Cereb Cortex.2012 Dec 18. [Epub ahead of print]
- Considerable research has supported the view that faces and words are subserved by independent neural mechanisms located in the ventral visual cortex in opposite hemispheres. On this view, right hemisphere ventral lesions that impair face recognition (prosopagnosia) should leave word recognition una
- PMID 23250954
- Gerstmann'S syndrome in acute stroke patients.
- Zukic S, Mrkonjic Z, Sinanovic O, Vidovic M, Kojic B.SourceDepartment of Neurology, University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina.
- Acta informatica medica : AIM : journal of the Society for Medical Informatics of Bosnia & Herzegovina : časopis Društva za medicinsku informatiku BiH.Acta Inform Med.2012 Dec;20(4):242-3. doi: 10.5455/aim.2012.20.242-243.
- OBJECTIVE: Gerstmann in 1924. observed in a few patients a concomitant impairment in discriminating their own fingers, writing by hand, distinguishing left from right and performing calculations. He claimed that this tetrad of symptoms constituted a syndromal entity, assigned it to a lesion of the d
- PMID 23378691
Japanese Journal
- Safe Removal of Glioblastoma Near the Angular Gyrus by Awake Surgery Preserving Calculation Ability : Case Report
- KURIMOTO Masanori,ASAHI Takashi,SHIBATA Takashi,TAKAHASHI Chiaki,NAGAI Shoichi,HAYASHI Nakamasa,MATSUI Mie,ENDO Shunro
- Neurologia medico-chirurgica 46(1), 46-50, 2006-01-15
- … rights: 本文データは日本脳神経外科学会の許諾に基づきCiNiiから複製したものであるA 67-year-old patient presented with progressive agraphia, alexia, and impaired ability to calculate persisting for 4 weeks. … His calculation ability was mapped on the angular gyrus, and partial resection of the tumor was achieved without deterioration of that ability. …
- NAID 110003480029
- 吉畑 博代
- 広島県立保健福祉短期大学紀要 2(1), 21-29, 1997-03
- 視覚失認を分類するにあたっては, Lissauer(1890)の提唱した方法が一般的に用いられている。それは視覚失認を統覚型視覚失認と連合型視覚失認の2つのタイプに分類する方法である。以前に筆者はLissauerのいう連合型視覚失認を呈すると思われる症例を経験したので, その詳細について発表した。しかしながら近年では, 認知神経心理学や情報処理理論の発展により視覚認知に関する詳細が明らかになってき …
- NAID 110004669405
- 純粋失読における視知覚機能に関する検討:書体の異なる文の処理速度の比較
- 二田水 かおり,小嶋 知幸,佐野 洋子,加藤 正弘
- 神経心理学 : Japanese journal of neuropsychology 12(1), 30-37, 1996-03-25
- NAID 10008743828
Related Links
- Home » Professionals » Stroke Diagnosis » Stroke Syndromes » Alexia without Agraphia Alexia without Agraphia Stroke Assessment Scales Overview Stroke Assessment Scales DSM-IV criteria for the diagnosis of vascular ...
- 213 Anterior 9 }AG 3a ROL LOL b Anterior 9 }AG I I I L RbL LOL Fig.3a--d. Alexia without agraphia perti- nent anatomy. a Axial drawing demonstrating how a left posterior cerebral artery territory infarct (cross-hatched ...
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★リンクテーブル★
[★]
- 英
- pure alexia、alexia without agraphia、pure alexia without agraphia
- 関
- 純粋失読症
- 同
- 視覚失認性失読
[★]
- 英
- pure alexia、alexia without agraphia
- 関
- 純粋失読