WordNet
- a loss of the ability to recognize objects by handling them (同)tactile_agnosia
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/10/01 20:30:51」(JST)
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Main article: Agnosia
Astereognosis |
Classification and external resources |
ICD-9-CM |
780.99 |
Astereognosis (or tactile agnosia if only one hand is affected) is the inability to identify an object by active touch of the hands without other sensory input. An individual with astereognosis is unable to identify objects by handling them, despite intact sensation.[1] With the absence of vision (i.e. eyes closed), an individual with astereognosis is unable to identify what is placed in their hand.[1] As opposed to agnosia, when the object is observed visually, one should be able to successfully identify the object.
Individuals with tactile agnosia may be able to identify the name, purpose, or origin of an object with their left hand but not their right, or vice versa, or both hands. Astereognosis refers specifically to those who lack tactile recognition in both hands. In the affected hand(s) they may be able to identify basic shapes such as pyramids and spheres (with abnormally high difficulty) but still not tactilely recognize common objects by easily recognizable and unique features such as a fork by its prongs (though the individual may report feeling a long, metal rod with multiple, pointy rods stemming off in uniform direction).[2] These symptoms suggest that a very specific part of the brain is responsible for making the connections between tactile stimuli and functions/relationships of that stimuli, which, along with the relatively low impact this disorder has on a person's quality of life, helps explain the rarity of reports and research of individuals with tactile agnosia.[2]
Astereognosis is associated with lesions of the parietal lobe or dorsal column or parieto-temporo-occipital lobe (posterior association areas) of either the right or left hemisphere of the cerebral cortex.[1] [2]
See also
References
- ^ a b c O'Sullivan, S.B.; Schmitz, T.J. (2007). Physical Rehabilitation (5th ed.). Philadelphia: F.A. Davis Company. pp. 1180–1181.
- ^ a b c Gerstmann, J. (2001). Pure Tactile Agnosia Cognitive Neuropsychology. pp. 267–274.
Symptoms and signs: Speech and voice / Symptoms involving head and neck (R47–R49, 784)
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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
- Toothache
- Galvanic pain
- Barodontalgia
- 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
- Hypersensitive gag reflex
- Jaw claudication
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Index of psychology and psychiatry
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Description |
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Disorders |
- Mental and behavioral
- Mood
- Developmental
- pervasive
- dyslexia and specific
- Substance-related
- Emotional and behavioral
- Symptoms and signs
- Evaluation and testing
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Treatment |
- Psychotherapy
- Drugs
- depression
- antipsychotics
- anxiety
- dementia
- hypnotics and sedatives
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Index of the mouth
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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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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 |
Medulla (CN 8, 9, 10, 12) |
- Lateral medullary syndrome/Wallenberg
- Medial medullary syndrome/Dejerine
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Pons (CN 5, 6, 7, 8) |
- 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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Midbrain (CN 3, 4) |
- Weber's syndrome
- Benedikt syndrome
- Parinaud's syndrome
- Nothnagel's syndrome
- Claude's syndrome
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Other |
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Cerebellum |
- lateral (Dysmetria
- Dysdiadochokinesia
- Intention tremor)
- medial (Cerebellar ataxia)
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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
- cortex
- association fibers
- commissural fibers
- lateral ventricles
- basal ganglia
- diencephalon
- mesencephalon
- pons
- cerebellum
- medulla
- spinal cord
- Physiology
- Development
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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
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Treatment |
- Procedures
- Drugs
- general anesthetics
- analgesics
- addiction
- epilepsy
- cholinergics
- migraine
- Parkinson's
- vertigo
- other
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UpToDate Contents
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English Journal
- Subgroup differences in the lexical tone mismatch negativity (MMN) among Mandarin speakers with congenital amusia.
- Nan Y1, Huang WT2, Wang WJ2, Liu C3, Dong Q2.
- Biological psychology.Biol Psychol.2016 Jan;113:59-67. doi: 10.1016/j.biopsycho.2015.11.010. Epub 2015 Nov 27.
- The association/dissociation of pitch processing between music and language is a long lasting debate. We examined this music-language relationship by investigating to what extent pitch deficits in these two domains were dissociable. We focused on a special neurodevelopmental pitch disorder - congeni
- PMID 26638759
- Reversible pure word deafness due to inferior colliculi compression by a pineal germinoma in a young adult.
- Joswig H1, Schönenberger U2, Brügge D3, Richter H4, Surbeck W5.
- Clinical neurology and neurosurgery.Clin Neurol Neurosurg.2015 Dec;139:62-5. doi: 10.1016/j.clineuro.2015.08.034. Epub 2015 Sep 9.
- We report a clinical case of a 19-year-old male patient who developed pure word deafness due to the local compressive effect of a pineal germinoma on the inferior colliculi of the quadrigeminal plate. After percutaneous radiation therapy the size of the tumor decreased significantly, while audiometr
- PMID 26372938
- Impairments in the Face-Processing Network in Developmental Prosopagnosia and Semantic Dementia.
- Mendez MF1, Ringman JM, Shapira JS.
- Cognitive and behavioral neurology : official journal of the Society for Behavioral and Cognitive Neurology.Cogn Behav Neurol.2015 Dec;28(4):188-97. doi: 10.1097/WNN.0000000000000077.
- BACKGROUND: Developmental prosopagnosia (DP) and semantic dementia (SD) may be the two most common neurologic disorders of face processing, but their main clinical and pathophysiologic differences have not been established. To identify those features, we compared patients with DP and SD.METHODS: Fiv
- PMID 26705265
Japanese Journal
- 両側の Useless hand syndrome を主症状とした多発性硬化症の1例
- 濱田 英里,岡本 憲省,奥田 文悟
- 臨床神経学 : CLINICAL NEUROLOGY 45(3), 211-215, 2005-03-01
- NAID 10015454372
- 失認の診方 (特集 わかりやすい高次脳機能の診方)
Related Links
- astereognosis [ah-ster″e-og-no´sis] loss or lack of the ability to understand the form and nature of objects that are touched (stereognosis), a form of tactile agnosia. tac·tile ag·no·si·a inability to recognize objects by touch, in the ...
- Astereognosis definition, the inability to determine the shape of an object by touching or feeling it. See more. Dictionary.com Word of the Day Translate Games Blog Thesaurus.com Apps Favorites Log Out Log In follow Dictionary ...
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★リンクテーブル★
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- 英
- astereognosis, stereoagnosis
- 同
- 立体覚消失