An impairment in the articulatory output of language which can be paretic or connected to a deficit in the planning of the language sounds. An impairment in the articulatory output of language which can be paretic (dysarthria) or connected to a deficit in the planning of the language sounds (anarthria or speech apraxia).
Furthermore, comparison of this pattern of speech with those of posterior patients has revealed that Broca’s aphasics can be qualitatively distinguished from Wernicke’s aphasics on the basis of their speech production. In particular, voice-onset time analyses have shown that Broca’s aphasics display the timing deficits described here, whereas Bernice’s aphasics show minimal impairment (Bluemstein et al., 1980). Many of the phonological errors described in the preceding section probably reflected deficits of articulatory programming rather than planning. However, it is not clear whether the various types of errors and characteristics of segment production found in anterior aphasics can be attributed solely to articulatory deficits.