graphesthesia

n. the recognition of numbers or letters that are spelled out on the skin, as with finger movements or a dull pointed object. This form of passive touch has been used as a diagnostic tool for brain damage. In addition, people with both visual and hearing impairment are taught to communicate with those who are unfamiliar with sign language by digitally spelling out words on the skin.

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Psychology term of the day

May 8th 2024

peptide

n. a short chain of amino acids linked by peptide bonds. Peptides are usually identified by the number of amino acids in the chain. For example, dipeptides have two amino acids, tripeptides three, tetrapeptides four, and so on. See also polypeptide; protein.