Anger-based BCI Using fNIRS Neurofeedback
summary
An active fNIRS neurofeedback system measures HbO left minus right signals using a Biopack optical headband and maps real‑time prefrontal asymmetry to a visual effect in a virtual 3D narrative where expressing anger makes an introduced “evil” character progressively disappear. Eleven subjects with minimal training achieve 73% individual success (58% of feedback blocks), with effects driven primarily by increased left prefrontal asymmetry, and success correlates with intent to express anger.
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chapters (14)
- 0:00Introduction to anger-based BCIs
- 1:09Challenges in emotional BCIs
- 2:34Prefrontal cortex asymmetry and approach-avoidance
- 5:45Signal acquisition with fNIRS
- 7:07Neurofeedback BCI design
- 8:51Narrative for anger elicitation
- 10:19Baseline and neurofeedback mapping
- 11:25Real-time signal processing
- 12:07Neurofeedback session demo
- 12:50Results and individual analysis
- 13:32Success rates across subjects
- 14:33Population-level asymmetry findings
- 15:15Study conclusions and implications
- 16:17Q&A session
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