How does intentionally synchronizing gait to the beat of music affect the brain?

In a continuing project conducted in the Grahn lab, we are applying mobile functional near-infrared spectroscopy (fNIRS) to a well-tested gait paradigm.

Previous research shows that when listening to music of a similar BPM (beats per minute) to one's natural cadence, gait naturally begins to synchronize. This is used as a therapeutic treatment for Parkinson's Disease called Rhythmic Auditory Cueing (RAC).

However, conscious synchronization often results in undesirable effects—shortened stride length, hesitant steps, and smaller step width. In this study, we examine the changes in brain activity in the auditory-motor pathways associated with beat perception, as well as potential effects on cognitive workload in the prefrontal cortex.

What is the most effective method of instruction during RAC that balances outcomes and workload? Data collection is currently underway.