**Biofeedback & JavaScript
June 21, 2025 • health-wellness

Biofeedback & JavaScript: Visualize Your Inner State
Ever wondered what your stress looks like? Biofeedback empowers you to see – and ultimately control – physiological responses like heart rate variability. And you can build tools to do this yourself!
This post explores combining biofeedback principles with the power of JavaScript and the Web Audio API. Imagine visualizing your stress levels in real-time, directly in your browser.
Here's a glimpse of what's possible:
- Capture audio signals (like pulse from a fingertip sensor).
- Process this data using JavaScript.
- Create dynamic visualizations – changing colors, shapes, or sounds – reflecting your physiological state.
It's a fantastic project for learning web development and understanding your body! Stay tuned for a deeper dive into building a simple biofeedback web app. ✨
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