fMRI is too noisy for mind reading: researchers push back on dystopia framing
humanscotti · x · 2026-11-15
Russ Poldrack (Stanford) and science writer Scotty Hendricks push back on major outlets (NYT this week, MIT Tech Review last month) framing brain-decoding research as a dystopia in waiting, bookended with hints that AI will soon read your secrets, detect lies, or serve brain-optimized ads.
- fMRI is far too noisy and fragile for lie detection or nonconsensual decoding: moving your head a few mm ruins the scan, decoding only works with cooperative subjects, and MRI is an expensive, immovable machine
- What's actually near: brain foundation models and neuroAI helping patients — reducing symptoms, detecting lesions, tracking clinically meaningful outcomes
- They call for a richer, more optimistic public conversation instead of fear-driven engagement bait
A substantive correction to the AI × neuroscience hype narrative.
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