Dysarthria

n. impairment of pronunciation

Dysarthria is a speech disorder resulting from neurological injury, characterised by poor articulation (cf aphasia: disorder of the content of speech). Any of the speech subsystems (respiration, phonation, resonance, prosody, articulation and movements of jaw and tongue) can be affected. Disarthic speech is due to some disorder in the nervous system, which in turn hinders control over for example tongue, throat, lips or lungs. Swallowing problems, dysphagia, are often present.Cranial nerves that control these muscles include the facial nerve (VII), the glossopharyngeal nerve (IX), the vagus nerve (X), and the hypoglossal nerve (XII).
See more at Wikipedia.org...

Dysarthria /dys·ar·thria/ a speech disorder caused by disturbances of muscular control because of damage to the central or peripheral nervous system. [more]Dysarthria - Community and Resources

Noun
1. impaired articulatory ability resulting from defects in the peripheral motor nerves or in the speech musculature
(hypernym) speech disorder, speech defect, defect of speech

رتة