Lee Silverman Voice Treatment

Lee Silverman Voice Treatment (LSVT) Loud improves speech production in adults with Parkinson's and individuals with dysarthria. Lorraine Ramig developed it.

Who It's For:

Often used with Parkinson’s patients but found to be effective in children with dysarthria secondary to cerebral palsy.

How It's Practiced:

The treatment focuses on healthy vocal loudness, increase vocal intensity to reap other benefits across the speech production system, such as improved speech intelligibility.

You need to be certified in LSVT Loud if you are providing this therapy approach to clients. You can find more information here.

There are 3 key strategies:

1. Target: Vocal Volume

Focuses on learning and neuroplasticity using evidenced-based strategies.

2. Mode: Intensive Dosage and High Effort

Sessions are one-on-one and focused on the client’s indivdual goals. You will encourage the client to achieve their goals by working harder.

3.Calibration: Generalization

Help the client understand their new louder voices are within normal speaking limits and encourage them to use their new skills to communicate with others.

Download LSVT Handout Here


4 hour long treatment sessions per week for 4 weeks in addition to a home program.


Brooke-Mai Whelan, Deborah Theodoros, Katie L. Mcmahon, David Copland, Danielle Aldridge & Jessica Campbell (2021) Substrates of speech treatment-induced neuroplasticity in adults and children with motor speech disorders: A systematic scoping review of neuroimaging evidence, International Journal of Speech-Language Pathology, 23:6, 579-592, DOI: 10.1080/17549507.2021.1908425

Fox, C. M., & Boliek, C. A. (2012). Intensive Voice Treatment (LSVT LOUD) for Children With Spastic Cerebral Palsy and Dysarthria. Journal of Speech, Language, and Hearing Research, 55(3), 930–945. https://doi.org/10.1044/1092-4388(2011/10-0235)

‌Sapir, S., Spielman, J., Ramig, L. O., Hinds, S. L., Countryman, S., Fox, C., & Story, B. (2004). Effects of Intensive Voice Treatment (the Lee Silverman Voice Treatment [LSVT]) on Ataxic Dysarthria. American Journal of Speech-Language Pathology, 13(1), 93–93. https://doi.org/10.1044/1058-0360(2004/010)