Acoustic Change Over Time in Spastic and/or Flaccid Dysarthria in Motor Neuron Diseases

CONCLUSIONS: The acoustic parameters partially differentiated among the dysarthria subtypes in relation to motor neuron diseases. While similar acoustic patterns were found in spastic-flaccid and spastic dysarthria, crucial differences were found between these two subtypes relating to variability. The acoustic patterns were much more variable in ALS. This method forms a promising clinical tool as a diagnostic marker of articulatory impairment, even at mild stage of dysarthria progression in all subtypes.PMID:35412848 | DOI:10.1044/2022_JSLHR-21-00434