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Stereognosis (also known as haptic perception or tactile gnosis) is the ability to perceive and recognize the form of an object in the absence of visual and auditory information, by using tactile information to provide cues from texture, size, spatial properties, and temperature, etc. In humans, this sense, along with tactile spatial acuity, vibration perception, texture discrimination and proprioception, is mediated by the dorsal column-medial lemniscus pathway of the central nervous system. Stereognosis tests determine whether or not the parietal lobe of the brain is intact. Typically, these tests involved having the patient identify common objects (e.g. keys, comb, safety pins) placed in their hand without any visual cues.Stereognosis is a higher cerebral associative cortical function.

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  • Stéréognosie (fr)
  • Stereognozja (pl)
  • Stereognosis (en)
  • Estereognosia (pt)
  • Stereognosi (sv)
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  • Stereognosis adalah kemampuan perasaan seseorang untuk mengenal jenis dan bentuk sesuatu dengan cara memegang atau meraba benda itu. Sumber lain menjelaskan bahwa Stereognosis merupakan kemampuan seseorang untuk mengidentifikasi objek umum dengan palpasi, bentuk, tekstur dan ukuran objek. Tes stereognosis ini merupakan tes untuk pemeriksaan di mana sebuah objek ditempatkan di tangan pasien dan mereka diminta untuk mengidentifikasinya. Ketidakmampuan untuk mengidentifikasi bentuk atau membedakan antar objek dapat menunjukkan lesi lobus (kontralateral) parietal. (in)
  • La stéréognosie, aussi appelée gnosie tactile se définit par la capacité d’une personne à reconnaître et identifier les caractéristiques d’un objet ou d’une forme géométrique uniquement en sollicitant les perceptions tactiles (toucher, texture et température) et les informations proprioceptives (pression, position, mouvement et poids) que l’objet ou la forme fournissent (Carlson & Brooks, 2009). (fr)
  • Stereognozja – termin neurologiczny określający zdolność do rozpoznawania przedmiotów wyłącznie za pomocą dotyku.Stwierdzono, że u ludzi chorych na chorobę Alzheimera stereognozja znacznie pogarsza się, w przeciwieństwie do innych typów demencji, gdzie to zjawisko nie jest obserwowane.Upośledzenie stereognozji, jednakże bez uchwytnych zaburzeń czucia powierzchownego nazywane jest stereoagnozją. Świadczy o uszkodzeniu kory płata ciemieniowego.Stereoanastezja to z kolei niemożność rozpoznania rozmiarów oraz kształtów przedmiotu za pomocą dotyku. (pl)
  • Stereognosis (also known as haptic perception or tactile gnosis) is the ability to perceive and recognize the form of an object in the absence of visual and auditory information, by using tactile information to provide cues from texture, size, spatial properties, and temperature, etc. In humans, this sense, along with tactile spatial acuity, vibration perception, texture discrimination and proprioception, is mediated by the dorsal column-medial lemniscus pathway of the central nervous system. Stereognosis tests determine whether or not the parietal lobe of the brain is intact. Typically, these tests involved having the patient identify common objects (e.g. keys, comb, safety pins) placed in their hand without any visual cues.Stereognosis is a higher cerebral associative cortical function. (en)
  • A estereognosia gnose tátil é a capacidade de perceber e reconhecer a forma de um objeto na ausência de informações visuais e auditivas, usando o tato para analisar a textura, o tamanho, as propriedades espaciais, a temperatura, etc. Em humanos, esse sentido, junto com a acuidade espacial tátil, percepção de vibração, discriminação de textura e propriocepção, é mediado pela via do lemnisco medial-coluna dorsal do sistema nervoso central. Os testes de estereognose determinam se o lobo parietal do cérebro está ou não intacto. Normalmente, esses testes envolvem a identificação do paciente de objetos comuns (por exemplo, chaves, pente, alfinetes) colocados em suas mãos sem nenhuma pista visual. Estereognose é uma função cortical associativa cerebral superior. (pt)
  • Stereognosi (även känd som haptisk uppfattning eller taktil gnosis) är förmågan att uppfatta och känna igen formen av ett föremål i frånvaro av visuell och auditiv information genom att använda taktil information för att ge signaler om textur, storlek, rumsliga egenskaper och temperatur, etc. För människor förmedlas detta intryck, tillsammans med taktil rumslig synförmåga, uppfattning av vibrationer, urskiljning av textur och proprioception av bakre kolonnmediala lemniscusbanan av det centrala nervsystemet. (sv)
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  • Stereognosis adalah kemampuan perasaan seseorang untuk mengenal jenis dan bentuk sesuatu dengan cara memegang atau meraba benda itu. Sumber lain menjelaskan bahwa Stereognosis merupakan kemampuan seseorang untuk mengidentifikasi objek umum dengan palpasi, bentuk, tekstur dan ukuran objek. Tes stereognosis ini merupakan tes untuk pemeriksaan di mana sebuah objek ditempatkan di tangan pasien dan mereka diminta untuk mengidentifikasinya. Ketidakmampuan untuk mengidentifikasi bentuk atau membedakan antar objek dapat menunjukkan lesi lobus (kontralateral) parietal. (in)
  • Stereognosis (also known as haptic perception or tactile gnosis) is the ability to perceive and recognize the form of an object in the absence of visual and auditory information, by using tactile information to provide cues from texture, size, spatial properties, and temperature, etc. In humans, this sense, along with tactile spatial acuity, vibration perception, texture discrimination and proprioception, is mediated by the dorsal column-medial lemniscus pathway of the central nervous system. Stereognosis tests determine whether or not the parietal lobe of the brain is intact. Typically, these tests involved having the patient identify common objects (e.g. keys, comb, safety pins) placed in their hand without any visual cues.Stereognosis is a higher cerebral associative cortical function. Astereognosis is the failure to identify or recognize objects by palpation in the absence of visual or auditory information, even though tactile, proprioceptive, and thermal sensations may be unaffected. It may be caused by disease of the sensory cortex or posterior columns. People suffering from Alzheimer's disease show a reduction in stereognosis. Astereognosis can be caused by damage to the posterior association areas of the parietal, temporal, or occipital lobes, or the postcentral gyrus of either hemisphere. For other types of dementia, stereognosis does not appear to decline. Mechanism of neural pathway The dorsal column medial lemniscus pathway is responsible for relaying sensory information regarding proprioception, vibration, and fine touch. First order neurons carry sensory information from proprioceptive and tactile receptors to the medulla oblongata where they synapse in either the medullary gracilus or cuneate nuclei. Information carried from regions above spinal level T6 synapse at the cuneate nuclei, while information carried from T6 and below synapse at the gracilus nuclei. At this point, second order neurons decussate and relay information through the contralateral medial lemniscus to the thalamus. At the thalamus, second order neurons synapse with third order neurons, which continue through the internal capsule to the primary sensory cortex of the post central gyrus where the tract terminates. Stereognosis determines whether or not this tract is properly functioning. An individual who cannot properly identify an object using stereognosis, could suffer from lesions in nerve roots, peripheral nerves, the spinal cord, thalamus, or primary sensory cortex. Because the dorsal column medial lemniscus pathway travels through and relays information to these areas, a lack of proper sensation indicates a problem with this neural sensory tract. Administered tests and recognition of pattern sensory loss can identify lesions in particular nerves or areas. (en)
  • La stéréognosie, aussi appelée gnosie tactile se définit par la capacité d’une personne à reconnaître et identifier les caractéristiques d’un objet ou d’une forme géométrique uniquement en sollicitant les perceptions tactiles (toucher, texture et température) et les informations proprioceptives (pression, position, mouvement et poids) que l’objet ou la forme fournissent (Carlson & Brooks, 2009). (fr)
  • Stereognozja – termin neurologiczny określający zdolność do rozpoznawania przedmiotów wyłącznie za pomocą dotyku.Stwierdzono, że u ludzi chorych na chorobę Alzheimera stereognozja znacznie pogarsza się, w przeciwieństwie do innych typów demencji, gdzie to zjawisko nie jest obserwowane.Upośledzenie stereognozji, jednakże bez uchwytnych zaburzeń czucia powierzchownego nazywane jest stereoagnozją. Świadczy o uszkodzeniu kory płata ciemieniowego.Stereoanastezja to z kolei niemożność rozpoznania rozmiarów oraz kształtów przedmiotu za pomocą dotyku. (pl)
  • Stereognosi (även känd som haptisk uppfattning eller taktil gnosis) är förmågan att uppfatta och känna igen formen av ett föremål i frånvaro av visuell och auditiv information genom att använda taktil information för att ge signaler om textur, storlek, rumsliga egenskaper och temperatur, etc. För människor förmedlas detta intryck, tillsammans med taktil rumslig synförmåga, uppfattning av vibrationer, urskiljning av textur och proprioception av bakre kolonnmediala lemniscusbanan av det centrala nervsystemet. Stereognositester utförs för att avgöra om hjässloben i hjärnan är intakt. Normalt sker dessa tester genom att patienten får identifiera vanliga objekt (t.ex. nycklar, kam, säkerhetsnålar) som placeras i hens hand utan visuella referenser. Stereognosi är en högre cerebral associativ kortikal funktion. Astereognosi betecknar misslyckandet att identifiera eller känna igen objekt genom palpation i avsaknad av visuell eller auditiv information, även om taktila, proprioceptiva och termiska förnimmelser kan vara opåverkad. Det kan orsakas av sjukdom i sensoriska cortex eller bakre kolumner. Människor som lider av Alzheimers sjukdom uppvisar en reduktion i stereognosi. Astereognosi kan orsakas av skada på de bakre associationsområdenas parietala, temporala, eller occipitallober, eller postcentral gyrus av endera hjärnhalvan. För andra typer av demens, visar sig stereognosi inte minska. (sv)
  • A estereognosia gnose tátil é a capacidade de perceber e reconhecer a forma de um objeto na ausência de informações visuais e auditivas, usando o tato para analisar a textura, o tamanho, as propriedades espaciais, a temperatura, etc. Em humanos, esse sentido, junto com a acuidade espacial tátil, percepção de vibração, discriminação de textura e propriocepção, é mediado pela via do lemnisco medial-coluna dorsal do sistema nervoso central. Os testes de estereognose determinam se o lobo parietal do cérebro está ou não intacto. Normalmente, esses testes envolvem a identificação do paciente de objetos comuns (por exemplo, chaves, pente, alfinetes) colocados em suas mãos sem nenhuma pista visual. Estereognose é uma função cortical associativa cerebral superior. Astereognose é a falha em identificar ou reconhecer objetos pela palpação na ausência de informações visuais ou auditivas, mesmo que as sensações táteis, proprioceptivas e térmicas possam não ser afetadas. Pode ser causado por doenças do córtex sensorial ou das colunas posteriores. Pessoas que sofrem da doença de Alzheimer apresentam redução da estereognosia. A astereognose pode ser causada por danos às áreas de associação posteriores dos lobos parietal, temporal ou occipital, ou ao giro pós-central de qualquer um dos hemisférios. (pt)
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