01 · Pulse simulator
TMS pulse
Aim a teaching pulse at a brain region and see how a short burst is represented.
A clear guide to brain stimulation & imaging
Three ways to look at the living brain.
Explore what Transcranial Magnetic Stimulation, brainwave entrainment, and Magnetic Resonance Imaging do, how they differ, and where safety matters.
The short version
Different tools, different questions.
Tap a card to highlight a tool and compare it below.
Try the ideas safely
Three interactive demonstrations.
These are visual learning tools, not clinical devices or diagnostic scans.
02 · Rhythm player
Entrainment rhythm
Play a gentle repeating tone and watch its rhythm. It does not claim to change brain activity.
03 · Slice viewer
MRI slice explorer
Move through a fictional slice stack to understand how an MRI can build a view from sections.
Fictional teaching image · not a medical scan.
Your audible signal
Estimate a voice frequency.
Use your microphone to estimate the strongest audible frequency in a hum or spoken sound.
Voice resonance reader
Hum one comfortable note for a few seconds. This reads sound picked up by your microphone—not your brain, body, or a medical resonance.
1. Find a quiet spot
2. Tap start
3. Hum or speak naturally
Microphone is off. Nothing is recorded or saved.
Strongest audible frequency
—
Hz
A steady tone gives the clearest estimate.
Side by side
Choose the lens that fits the question.
| Tool | What it does | Main signal | Best for |
|---|
No tools match that purpose.
Important context
Curiosity is not a treatment plan.
This guide is for orientation, not diagnosis or medical advice. TMS and MRI have screening requirements, and entrainment products can make claims that are not equivalent to clinical evidence. Talk with a qualified clinician before using any intervention or device.
Ask about contraindications
Use trained professionals
Separate evidence from marketing