Modulating motor learning with brain stimulation: Stage-specific perspectives for transcranial and transcutaneous...

Area of Science:

• Neuroscience
• Motor Control
• Cognitive Science

Background:

• Brain stimulation techniques are increasingly utilized in motor learning research.
• Existing literature supports the efficacy of various stimulation methods in enhancing motor task learning, retention, and consolidation.

Purpose of the Study:

• To review the modulation of motor learning by transcranial direct current stimulation (tDCS), transcranial alternating current stimulation (tACS), and peripheral nerve stimulation (PNS).
• To categorize motor learning modulation based on learning stages: acquisition, consolidation, and retention.
• To explore stage-specific mechanisms of electrical stimulation's effects on motor learning and compare PNS with transcranial stimulation.

Main Methods:

• Systematic review of existing literature on brain and peripheral nerve stimulation for motor learning.
• Categorization of reviewed studies based on the stage of motor learning (acquisition, consolidation, retention).
• Analysis of proposed mechanisms for modulation at different learning stages.

Main Results:

• Transcranial stimulation (tDCS, tACS) and PNS can modulate motor learning acquisition, consolidation, and retention.
• Mechanisms of modulation vary depending on the learning stage and stimulation type.
• PNS exhibits overlapping features with transcranial stimulation and may contribute to intracranial stimulation study outcomes.

Conclusions:

• Electrical stimulation, including tDCS, tACS, and PNS, offers a viable approach to enhance motor learning processes.
• Understanding stage-specific mechanisms is crucial for optimizing stimulation protocols.
• Further research into PNS and its integration with brain stimulation holds potential for advancing motor rehabilitation and learning.