The effects of STN-DBS on motor speech: A longitudinal articulographic study

Speech deficits in Parkinson's disease (PD) manifest as hypokinetic dysarthria comprising reduced ability to modulate speech melody and loudness, and imprecise articulation [1]. The latter results from smaller, slower, and less precise articulatory movements further leading to reduced intelligibility [1]. The effect of deep brain stimulation of the subthalamic nucleus (STN-DBS) on speech is under debate. Whereas some studies report improvement, e.g. Refs. [2 –4], others report a deterioration of speech functions, e.g.
Source: BRAIN STIMULATION: Basic, Translational, and Clinical Research in Neuromodulation - Category: Neurology Authors: Source Type: research