The Brain Computer InterfaceThe Brain Computer Interface
All In The Mind
Artist Pro Hart died of it, so did actor David Niven - the nightmarish legacy of Motor Neurone disease which paralyses the body as the disease progresses. Communication can become restricted to an eye-blink, with the mind remaining intact and active in a frozen body. But the technological cutting edge of the brain-computer interface could make a difference, and help people communicate with the outside world using the only thing they have left...their mind. Turn on the TV, switch off the lights and even send emails, just by thinking about it? No, it's not hocus-pocus.
29:53•2 Dec 2006
The Brain-Computer Link Giving Trapped Minds a Voice
Episode Overview
- Motor neurone disease can leave a person fully aware but physically locked in, with communication often reduced to slow, exhausting eye-based systems.
- Simple brain-computer interfaces like Mind Switch use changes in alpha brain waves from eye closure to let users control devices such as TVs and lights.
- More advanced systems read brain signals to move a cursor and select letters, allowing people to send emails and operate standard computer programs.
- Personality, relaxation and emotional state can influence how strong and reliable a person’s brain signals are for controlling these interfaces.
- High costs, technical support needs and limited commercial interest remain major barriers to making brain-computer interfaces widely available.
“I'm just left, trapped inside this body.”
What can we learn from those who have battled addiction and extreme disability? This episode of All In The Mind turns the spotlight on brain-computer interfaces and how they might help people whose minds are fully awake but whose bodies have shut down. Reporter Abby Thomas teams up with host Natasha Mitchell to follow the harrowing reality of motor neurone disease and locked-in syndrome.
A young man describes being “just left, trapped inside this body,” while neurologist Associate Professor Matthew Kiernan explains how the disease gradually strips away movement until, in many cases, only eye muscles remain. It’s confronting stuff, but handled with care and clarity. From there, the episode shifts into cutting-edge tech. Professor Ashley Craig introduces "Mind Switch", a system that turns a simple one‑second eye closure into a digital on/off signal.
Suddenly, someone paralysed from the neck down can turn on the TV or lights with brain activity alone. As Craig jokes about “mind switch Olympics”, you’ll hear how some people’s brains make especially strong signals, and why mood and frustration can affect how well the system works. Across the Pacific, Professor Jonathan Walpaw outlines more advanced brain-computer interfaces that let people move a computer cursor and even type emails purely through brain signals.
His example of researcher Scott Mackler, who continues running a cocaine addiction lab despite motor neurone disease, shows just how far determination and technology can go together. The tone moves between raw first-person accounts and accessible science chat, making it ideal for anyone curious about how the brain, technology and resilience intersect.
If you or someone you care about is living with serious illness, disability or addiction, this conversation might leave you asking: how much freedom could a thought-controlled device return to a trapped mind?
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