Echopraxia
Involuntary imitation of another person's actions / From Wikipedia, the free encyclopedia
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Echopraxia (also known as echokinesis[1]) is the involuntary repetition or imitation of another person's actions.[1] Similar to echolalia, the involuntary repetition of sounds and language, it is one of the echophenomena ("automatic imitative actions without explicit awareness").[1] It has long been recognized as a core feature of Tourette syndrome,[1] and is considered a complex tic, but it also occurs in autism spectrum disorders,[1][2] schizophrenia and catatonia,[1][3] aphasia, and disorders involving the startle reflex such as latah.[1][4] Echopraxia has also been observed in individuals with epilepsy, dementia and autoimmune disorders;[1] the causes of and the link between echopraxia and these disorders is undetermined.[5]
The etymology of the term is from Ancient Greek: "ἠχώ (ēkhō) from ἠχή (ēkhē "sound") and "πρᾶξις (praksis, "action, activity, practice)".[6]