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Better modulation for risk decision-making after optimized magnetic stimulation.

Lu Wang1,2,3, Xingqi Wu1,2,3, Gong-Jun Ji1,2,3,4

  • 1Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei, China.

Journal of Neuroscience Research
|February 22, 2021
PubMed
Summary
This summary is machine-generated.

Intermittent theta burst stimulation (iTBS) and 20 Hz transcranial magnetic stimulation (TMS) improved decision-making after negative feedback. iTBS demonstrated a superior risk reduction effect, suggesting potential clinical value for enhancing decision-making.

Keywords:
Game of Dice TaskRisk Gains Taskdecision‐makingintermittent theta burst stimulationrepetitive transcranial magnetic stimulationrisk decision‐making

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neuromodulation

Background:

  • Transcranial magnetic stimulation (TMS) modulates cortical excitability.
  • Theta burst stimulation (TBS) is a patterned, accelerated TMS protocol.
  • TBS may offer enhanced effects compared to traditional TMS for cognitive functions.

Purpose of the Study:

  • To compare the effects of intermittent TBS (iTBS) and 20 Hz TMS on risk decision-making.
  • To assess the impact of left dorsolateral prefrontal cortex stimulation on feedback utilization in decision tasks.
  • To evaluate the efficacy of iTBS versus 20 Hz TMS and sham stimulation.

Main Methods:

  • Randomized controlled trial with three groups: iTBS, 20 Hz TMS, and sham.
  • Participants (n=87) completed the Game of Dice Task (GDT) and Risky Gains Task (RGT).
  • Primary outcomes included positive and negative feedback utilization rates.

Main Results:

  • Both iTBS and 20 Hz TMS improved responses to negative feedback in the GDT, increasing safe choices.
  • iTBS significantly enhanced the utilization of positive feedback in both GDT and RGT.
  • iTBS showed a stronger risk reduction effect following negative feedback in the RGT compared to 20 Hz TMS and sham.

Conclusions:

  • Excitatory TMS, particularly iTBS, can improve information integration and rational decision-making.
  • iTBS demonstrates a more pronounced risk reduction effect after negative feedback than 20 Hz TMS.
  • iTBS holds potential clinical value for enhancing decision-making processes.