• Flaccid- muscle weakness & atrophy, hypernasal, nasal emissions, breathiness
• Spastic- muscles fight against stretching, hypertonicity, articulatory imprecision, slow rate, short phrases, harsh voice quality, reduced loudness, and pitch variation
• Ataxia
• Hypokinetic- Parkinson’s disease, damage to basal ganglia, hypertoned and rigid muscles, resting tremor, monopitch and loudness, accelerated movements and short rushes of speech
• Hyperkinetic
• mixed