Deep Brain Stimulation as a Rehabilitation Amplifier: A Precision-Oriented, Network-Guided Framework for Functional...

Area of Science:

• Neuroscience
• Neuromodulation
• Rehabilitation Science

Background:

• Deep brain stimulation (DBS) influences brain networks, offering benefits for Parkinson's disease, essential tremor, and dystonia.
• Its role in motor learning, plasticity, and rehabilitation is not fully understood, challenging focal intervention views.
• Evidence shows DBS modulates circuit dynamics across multiple scales.

Purpose of the Study:

• To explore how DBS can enhance rehabilitation outcomes by stabilizing motor performance and enabling consistent task execution.
• To identify limitations in realizing DBS's full potential in clinical practice, including interindividual variability and limited biomarkers.
• To review evidence for integrating DBS with physiotherapy, occupational therapy, and speech-language interventions.

Main Methods:

• Synthesis of mechanistic, imaging, and technological evidence on DBS and its network effects.
• Analysis of current understanding of DBS in modulating basal ganglia-thalamo-cortical and cerebellothalamic networks.
• Review of technological advancements like tractography-guided targeting and adaptive stimulation.

Main Results:

• DBS may enhance rehabilitation by reducing motor variability and stabilizing pathological oscillations.
• Limited controlled studies directly compare DBS with and without rehabilitation, complicating outcome interpretation.
• Technological advances offer personalized neuromodulation, but conceptual and empirical gaps persist.

Conclusions:

• DBS shows potential as a facilitator for rehabilitation-driven functional improvement.
• Further research is needed to optimize durable functional restoration by integrating DBS with rehabilitative strategies.
• Developing precision-informed frameworks requires validating connectomic and physiological biomarkers for functional outcomes.