Induction of plasticity and metaplasticity using noninvasive brain stimulation

Area of Science:

• Neuroscience
• Neuromodulation
• Synaptic Plasticity

Background:

• Noninvasive brain stimulation (NIBS) modulates brain plasticity, the basis of learning and memory.
• Synaptic plasticity involves strengthening (LTP) or weakening (LTD) of neural connections.
• Metaplasticity describes how prior neural activity influences future plasticity responses.

Purpose of the Study:

• To review how NIBS induces long-lasting synaptic changes (LTP/LTD).
• To emphasize the role of metaplasticity in NIBS.
• To discuss clinical applications and future research directions for personalized NIBS.

Main Methods:

• Literature review synthesizing current knowledge on NIBS and synaptic plasticity.
• Focus on metaplasticity mechanisms and influencing factors.
• Analysis of clinical implications and research gaps.

Main Results:

• NIBS techniques can induce LTP- and LTD-like changes.
• Stimulation parameters, brain state, and individual differences significantly impact plasticity outcomes.
• Metaplasticity offers a framework for understanding and optimizing NIBS effects.

Conclusions:

• Consistent therapeutic effects of NIBS are challenging due to variability.
• Applying metaplasticity concepts holds promise for treating neurological and psychiatric disorders.
• Personalized NIBS protocols aligned with biological mechanisms are crucial for improved outcomes.