[comex]

None of your references say that anyone has used fMRI for interrogation, let alone for decades. At most, your first two links say that the CIA and DoD respectively are interested in using fMRI for lie detection, but that's not necessarily the same as interrogation (both agencies currently use polygraphs extensively on their own employees, a case where the subject would be cooperative), and they don't say the agencies have actually put that idea into practice. Your third link cites the first one and does suggest that using fMRI for interrogation is possible, but doesn't say whether anyone has done it. Your fourth link does not mention the government or interrogation. The other two links are not about fMRI.

So we're left with the anecdotal hearsay, which might well be true, but even if true, doesn't really show that fMRI was effective against prisoners beyond its use as a psychological trick.

[BickNowstrom]

I feel you are splitting hairs here. Lie detection is necessarily a part of interrogation. The references say they can do this, and have been interested in doing it, so why wouldn't they be using it? The nature of intelligence agencies demands a certain degree of secrecy/anonymity and conjecture. One author of the fourth paper, though never directly researching military or government applications, moved from the U.S. to Canada in large part due to the appropriation and funding from the military for his research.

If you allow an argument from authority of the practical use in counter terrorism interrogation, see the works of bioethicist Jonathan Marks https://scholar.google.com/citations?user=MpKuUlkAAAAJ&hl=en who in his 2007 paper cites "Correspondence between a[n anonymous] U.S. counterintelligence liaison officer and Jean Maria Arrigo" (2002-2005) https://en.wikipedia.org/wiki/Jean_Maria_Arrigo :

> Brain scan by MRI/CAT scan with contrast along with EEG tests by doctors now used to screen terrorists like I suggested a long time back. Massive brain electrical activity if key words are spoken during scans. The use of the word SEMTEX provided massive brain disturbance. Process developed by NeuroPsychologists at London’s University College and Mossad. Great results. That way we only apply intensive interrogation techniques to the ones that show reactions to key words given both in English and in their own language.

[Military interrogation takes two forms, Tactical Questioning or Detailed Interviewing. Tactical Questioning is the initial screening of detainees, Detailed Interviewing is the more advanced questioning of subjects.]

Note that I did not even make the stronger claim of decades of applied usage -- that you are making me defend and invalidate my references with -- just that it was decades underway. But above quote should satisfy even that.

[mattkrause]

On purely technical grounds, I'm a little suspicious of that quote.

CT scans don't tell you anything about brain function (they're structural), nor do the sort of MRIs that do tell you about brain function tend not to use contrast agents. People have used iron oxide to measure changes in cerebral blood volume, but it swamps the BOLD signal that's usually used to read out task-related activity.

On the other hand, I can imagine that you could figure out if a non-cooperative subject knew the word "SEMTEX" was actually a word with an oddball paradigm. Not sure how much that really helps but...

Also, the source you're quoting actually seems decidedly skeptical about whether any of this works. Here's Mark's paper: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1005479

[BickNowstrom]

Heh, this conversation moved the goalpost so far that it ended up at the beginning. A needless detour. You are right about being skeptical if any of this decade underway technology actually works and this causing ethical problems. Good day.

[comex]

> The references say they can do this, and have been interested in doing it, so why wouldn't they be using it?

I'm not trying to split hairs. It is possible that, despite the interest, the technology isn't at a state where it would actually be useful in practice. However, your new citation is stronger.

[BickNowstrom]

The errors and bias in these systems add to the ethical concerns. While it is arguably a good thing to substitute torture with brain image interrogation, there is a risk of putting too much trust in these systems, subjecting innocents to days of leading investigation, just because the computer said there is something to be found there.

Israeli airport security (arguably the best in the world) deploys derivatives of these systems, that look at micro-gestures, elevation of heart rates, pupil dilation, and temperature changes, to see if passengers respond with familiarity to terrorist imagery flashed on a screen as they walk by it. If that already works in practice, imagine the same, but being strapped with hundreds of sensors.

See also the 2010 research on image reconstruction from brain activity, and extrapolate that 10 years in the future and applied to military interrogation: https://www.youtube.com/watch?v=nsjDnYxJ0bo

[serf]

> It is possible that, despite the interest, the technology isn't at a state where it would actually be useful in practice.

Well, given that unreliable interrogation techniques are pretty commonly used historically, maybe it's more of a value thing.

i.e. water-boarding is unreliable and cheap, fMRI is unreliable and expensive.