Neurologic Music Therapy is defined as the therapeutic application of music to cognitive, affective, sensory, language, and motor dysfunctions due to disease or injury to the human nervous system. Music therapy in general is based on the fact that music can effect the brain, but NMT is more specific in using proscribed techniques for certain conditions.
NMT is a special emphasis within music therapy that requires extra training. Practitioners use specific techniques to target behaviors that are based on research on how the brain works and processes the elements of music. These techniques have all been heavily researched and proven effective.
Examples of techniques include: Melodic Intonation Therapy for aphasia, apraxia, autism, and Down’s, Rhythmic Auditory Stimulation for gait rehab in Parkinson’s and TBI, Patterned Sensory Enhancement for populations with physical goals, Oral Motor Respiratory Exercises for strengthening the diaphragm and oral muscles, etc.
Feel free to ask me for more details and techniques. I am also including a link to a fairly exhaustive list of techniques and definitions.