Noninvasive brain stimulation in traumatic brain injury

Area of Science:

• Neuroscience
• Neurology
• Rehabilitation Medicine

Background:

• Traumatic brain injury (TBI) presents complex challenges in assessment and treatment.
• Current therapeutic strategies for TBI have limitations in addressing long-term functional deficits and promoting recovery.
• Noninvasive brain stimulation (NBS) techniques are emerging as potential tools to modulate brain activity and facilitate recovery after TBI.

Purpose of the Study:

• To review novel noninvasive brain stimulation (NBS) techniques with potential value in the assessment and treatment of traumatic brain injury (TBI).
• To explore the application of NBS for managing acute, subacute, and chronic stages of TBI.
• To discuss the mechanisms of action and clinical translation considerations for NBS in TBI.

Main Methods:

• Review of transcranial magnetic stimulation (TMS), transcranial direct current stimulation (tDCS), low-level laser therapy (LLLT), and transcranial Doppler sonography (TCD).
• Overview of existing TMS studies relevant to TBI.
• Discussion of the rationale, mechanisms, and clinical translation of NBS techniques for TBI.

Main Results:

• NBS techniques show potential to suppress acute glutamatergic hyperexcitability and counteract subacute GABAergic effects in TBI.
• In the chronic stage, NBS combined with rehabilitation may enhance behavioral recovery, skill acquisition, and cortical plasticity.
• Critical considerations for clinical use include correlative animal models and comprehensive safety trials.

Conclusions:

• Noninvasive brain stimulation (NBS) techniques hold promise for diagnostic and therapeutic applications in TBI.
• NBS can potentially guide cortical reorganization and facilitate functional restoration after TBI.
• Further safety research and well-designed clinical trials are essential to establish the efficacy of NBS in promoting TBI recovery and minimizing disability.