Jargon aphasia is a fluent aphasia characterized by a jumbled, unintelligible and meaningless output, with multiple paraphasias and neologisms, and sometimes echolalia (as in transcortical sensory aphasia). There may be a pressure of speech (logorrhea).
There is debate as to whether jargon aphasia is simply a primary Wernicke/posterior/ sensory type of aphasia with failure to self-monitor speech output, or whether additional deficits (e.g., pure word deafness, intellectual impairment) are also required. Others suggest that jargon aphasia represents aphasia and anosognosia, leading to confabulation and reduplicative paramnesia.
Hillis AE, Boatman DB, Hart J, Gordon B. Making sense out of jargon. A neurolinguistic and computational account of jargon aphasia. Neurology 1999; 53: 1813-1824
Kinsbourne M, Warrington EK. Jargon aphasia. Neuropsychologia
1963; 1: 27-37