astereognosis
/əˌstɛrioʊɡˈnoʊsɪs/
noun
- The inability to recognize objects by touch alone, even though the sense of touch is otherwise normal.
- The doctor tested for astereognosis by asking the patient to close her eyes and name a coin placed in her hand.
- After the stroke, the patient developed astereognosis and could not identify a key in his pocket by feel.
- Children with astereognosis may struggle to find a toy in a dark room by touch.