Imagine if you could measure how stressed someone is just by looking at their body signals. That's what researchers are trying to do! They're building a system to figure out your stress level based on four simple body responses: heart rate, skin sweat, chest breathing, and belly breathing. The goal? To classify stress into five different levels. It's like a stress decoder, using your body's own language to understand how you're feeling.

This isn't easy, though. The system needs to analyze these signals in two ways: linearly, which is like looking at each piece one by one, and nonlinearly, which is like seeing how they all fit together like a puzzle. It's like trying to understand a person's mood by looking at their heartbeat, sweat, and breathing all at once.

Researchers are using some cool methods to do this. For example, they're using something called photo-plethysmography to measure heart rate. It sounds fancy, but it's basically just a way to see how your heart is beating without actually touching it. They're also looking at the galvanic skin response, which is a fancy way of saying they're measuring how much you sweat. And, of course, they're keeping an eye on your breathing – both how your chest and your belly move.

The idea is that by understanding these signals, we can get a better sense of how stressed someone is. It's like having a secret decoder ring for emotions! But it's not just about the tech. It's also about understanding how our bodies react to stress and how we can use that knowledge to help people.

Decoding Emotions: Using Body Signals to Measure Stress

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