stereognosis
/ˌstɛrɪə(ʊ)ˈnəʊsɪs
/ /ˌstɪərɪə(ʊ)ˈnəʊsɪs/noun [mass noun] Psychology
The mental perception of depth or three-dimensionality by the senses, usually in reference to the ability to perceive the form of solid objects by touch.Subtle signs of frontal lobe dysfunction may be demonstrated by testing stereognosis (such as the ability to identify an object placed in the patient's palm)....
- Note that graphesthesia, stereognosis, and extinction cannot reliably be tested for unless primary sensation is intact bilaterally.
- This may indicate the possibility that oral stereognosis could enhance both the primary sensorimotor area and also other cerebral cortex regions associated with higher functions.
Derivatives
stereognostic
- Assessment of stereognostic skills also produced no evidence of impaired tactile integration skill.
- Various epidemiological studies on the oral behavior habits have revealed a sensorial deficiency and a stereognostic incapacity in thumb sucker and tongue pulser children.
- These include apparatus for visual discrimination, auditory, tactile, gustatory, olfactory, thermic, baric, and stereognostic discrimination.
Origin
Early 20th century: from Greek stereos 'solid' + gnōsis 'knowledge'.