<unk>  is a type of language output error commonly associated with aphasia, and characterized by the production of unintended syllables, words, or phrases during the effort to speak.<unk>  errors are most common in patients with fluent forms of aphasia, and come in three forms: phonemic or literal, neologistic, and verbal.<unk> s can affect metrical information, segmental information, number of syllables, or both. Some<unk> s preserve the meter without segmentation, and some do the opposite. However, most<unk> s affect both partially. The term was apparently introduced in 1877 by the German-English physician Julius Althaus in his book on Diseases of the Nervous System, in a sentence reading, "In some cases there is a perfect chorea or delirium of words, which may be called<unk> ".
Paraphasia
Metamorphopsia
Hypophonia
Dysmorphopsia
Dysarthria
Misophonia
Phonagnosia
Copropraxia