Stereognosis
Stereognosis
Stereognosis (/stɛrɪoʊɡˈnoʊsɪs/; from the Greek words stereos meaning solid, and gnosis meaning knowledge) is a sensory perception ability that allows an individual to recognize and identify objects based on touch alone, without the aid of visual perception or auditory perception.
Etymology
The term "stereognosis" is derived from the Greek words stereos meaning solid, and gnosis meaning knowledge. It was first used in the medical field in the late 19th century to describe the ability to recognize objects by touch.
Function
Stereognosis is a complex process that involves the integration of tactile information from the skin and proprioceptive information from the joints and muscles. This information is processed in the parietal lobe of the brain, specifically in the postcentral gyrus, which is the primary somatosensory cortex.
Clinical significance
Impaired stereognosis is often a sign of a neurological disorder, such as a stroke, brain injury, or neurodegenerative disease. It can also be affected in conditions that cause peripheral nerve damage, such as diabetes or carpal tunnel syndrome. Assessment of stereognosis is a common component of neurological examinations.
Related terms
- Astereognosis: The inability to identify objects by touch alone.
- Tactile agnosia: A more general term for the inability to recognize objects by touch, regardless of whether the sense of touch itself is impaired.
- Haptic perception: The process of recognizing objects through touch, which includes both stereognosis and kinesthetic sense.
See also
External links
- Medical encyclopedia article on Stereognosis
- Wikipedia's article - Stereognosis
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski