Control another person's hand with your brain — the demo no one forgets.

The Human-Human Interface is our most dramatic neuroscience demonstration. One person's brain sends a voluntary command, and through EMG recording and electrical stimulation, another person's hand moves involuntarily. It's safe, it's startling, and it teaches more about the nervous system in 60 seconds than a week of lectures.

How it works:

1. Person A flexes their arm — the device reads the EMG signal
2. The signal is amplified and sent to Person B's forearm via stimulation electrodes
3. Person B's hand twitches — involuntarily controlled by Person A's brain

What students learn:

• How motor neurons transmit movement commands
• The difference between voluntary and involuntary muscle activation
• Electrical stimulation principles used in clinical rehabilitation

What's included:

• Human-Human Interface unit
• EMG recording electrodes
• Stimulation electrode pads (TENS-style)
• All cables and connections needed

Who it's for:

• Science teachers who want a wow moment on day one
• Neuroscience outreach and museum events
• University demonstrations
• Corporate and community STEM events

As seen in Greg Gage's TED Talk — over 10 million views. The single best way to get anyone excited about neuroscience.