Could a Yeerk fool a lie detector?

[Stasiea]

So why do they need the lie detectors then?

So we can get away with stuff of course. I mean come on, we're a bunch of gray slugs trying to enslave humanity here, we like for you to think that you can successfully use lie detectors that don't require a full brain scan since obviously that would reveal us, ruin the invasion, and totally irritate the Visser and . . . oh, you mean Americans . . . okay uh  . . . so we can't get away with stuff?

Thank you for that information, it was very helpful

My name is Marco... (But today I'm pretending to be an innocent 16-year-old girl in European Russia.)
This is a warning. Stay away from the lie detectors next saturday, they will all explode at about 10-11 in the morning

[Shock]

depends on how much control a yeerk has over a nervous system.

too little and it will go off like a rocket.

[Mira]

There is another way. Scopolamine, just inject some and it's impossible to lie. Actually I don't get why no nation use that in their courts...

[Phoenix004]

Wikipedia mentions that Scopolamine was investigated as a truth drug decades ago, but it mainly talks about its various medicinal and hallucinogenic uses.

Let's face it, there are plenty of drugs, legal and illegal, that could be used to make people more likely to tell the truth (alcohol included). However, these things may all affect humans, but it's unlikely that they would affect a Yeerk in the same way, if at all.

[Ash]

To make this a fair test, we should assume that neither the Yeerk or the host have had training at resisting a lie detector.

The way I see it, the Yeerk would only be able to fool the detector if the Yeerk was capable of controlling the host's involuntary reactions. Since we don't know how much control Yeerks have over that kind of thing, it makes it difficult to say.

Yeah, I agree. If both the Yeerk and human had no knowledge on 'fooling' a lie detector, unless the Yeerk could control involuntary reactions, I doubt it'd be able to pass it.

I like the way your brain works, Mike. That's a pretty imaginative question.

[Phoenix004]

lol, thanks Ash. My mind works in strange, but interesting ways!

[wildweathel]

However, these things may all affect humans, but it's unlikely that they would affect a Yeerk in the same way, if at all.

B-b-but.  What about in Visser, where we learn a bit more about how drug abuse affects controllers?  Sure, Yeerks have the willpower to break addiction, and certainly look down on addicts, but at the same time mere human emotion and natural hormones nearly prove irresistible--maple/ginger aside.

Yeerks plug directly into their host's brain.  I can't see how something with neurological effects doesn't impact the Yeerk.

[Phoenix004]

True, and yet when a host is unconscious, The Yeerk remains awake. Not to mention the fact that a harmless breakfast cereal is a dangerous psychotic drug for Yeerks, proving that different chemicals affect people and Yeerks differently. Who knows what effects a truth drug would have on a Yeerk? (Assuming it worked at all)

Even here on regular old Earth, drugs can have vastly different effects on the native creatures. Scientists have tested the effects of different drugs on spiders and discovered that LSD (a drug which is disorientating for humans) actually improves a spider's ability to create a perfect web.

[Shock]

Wikipedia mentions that Scopolamine was investigated as a truth drug decades ago, but it mainly talks about its various medicinal and hallucinogenic uses.

Scopolamine is labeled a "truth drug" is because it limits the creativity of people to make up stuff.

not because it creates an urge to tell the truth.