Yes—but only in a very limited laboratory demonstration. In a University of Washington experiment reported on December 5, 2016, five people navigated simple two-dimensional mazes after a magnetic coil delivered flashes of light directly to their visual cortex. The system supplied a binary cue—phosphene present or absent—to indicate the next move. It did not read arbitrary thoughts or let players control an ordinary game hands-free.
What the experiment actually demonstrated
The University of Washington team tested whether a brain could use artificial information delivered directly to it, rather than information arriving through the eyes, ears or skin. Participants played a deliberately simple maze task: at each decision point, they had to choose between two possible moves.
A magnetic coil positioned near the back of the skull produced a phosphene—a perceived blob, bar or flash of light. The presence or absence of that sensation encoded the correct direction. The player still had to perform the maze input; the stimulation supplied the directional information.
Senior author Rajesh Rao described the broader question as whether “the brain can make use of artificial information that it’s never seen before” to navigate a virtual world or perform useful tasks. The result was a proof that it can, under tightly controlled conditions.
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How the brain-controlled maze worked
1. A coil stimulated the visual system
The setup used noninvasive transcranial magnetic stimulation (TMS). The coil generated a magnetic field through the skull, stimulating visual-processing areas and creating a visual sensation without a conventional display.
2. The sensation carried one bit of information
The experiment did not transmit a picture, spoken instruction or detailed game state. It encoded a binary signal: phosphene or no phosphene. That signal told the participant whether to move forward or down in the maze.
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3. The participant used the cue to solve a maze
Across the study’s 21 mazes, subjects used the artificial cue to make the required binary choices. This is better understood as receiving a new sensory signal than as having thoughts translated into game commands.
How accurate was it?
| Condition | Result | Study details |
|---|---|---|
| With direct brain stimulation | 92% correct moves | Average reported by the University of Washington in 2016 |
| Control mazes without stimulation guidance | 15% correct moves | Average reported by the University of Washington in 2016 |
| Participants | 5 people | Human proof-of-concept study |
| Mazes | 21 | Simple two-dimensional tasks |
The large difference—92 percent versus 15 percent in the control condition—shows that the phosphene cue carried useful information. It does not show that the system could support a complex commercial game, continuous movement or unrestricted commands.
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Is this the same as thought-controlled gaming?
No. There are two different directions in brain-computer research:
- Decoding: measuring brain signals and inferring what a person intends to do, such as selecting a cursor direction.
- Stimulation or encoding: delivering information into the nervous system, as this experiment did with TMS.
The UW maze demonstration primarily used the second approach. The computer did not decode a player’s private thoughts into arbitrary actions. Instead, it gave the player an artificial cue that the brain learned to use.
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Can you buy and play this system at home?
No equivalent consumer product was established by this experiment. The TMS hardware was bulky laboratory equipment, not a portable gaming accessory. Andrea Stocco, one of the study’s co-authors, said that “the technology is not there yet” because the stimulation tool was not something a person would carry around.
Generic EEG headsets, VR headsets and so-called brain-control controllers are adjacent technologies, not the TMS-and-phosphene system demonstrated here. A specialist TMS coil should not be treated as a home gaming device; safe use requires appropriate equipment, training and oversight.
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What could systems like this eventually do?
The researchers pointed to two broad possibilities:
- More informative virtual reality: artificial sensory signals could supplement displays, headsets and goggles. Rao noted that the brain ultimately creates the user’s experience of reality.
- Assistive communication or navigation: directly supplied cues might help people with sensory deficits if future hardware becomes practical and clinically appropriate.
Lead author Darby Losey summarized the ambition as giving humans “a sixth sense.” Those are future applications, not capabilities demonstrated by the maze software itself.
What would a real mind-controlled game need to improve?
A future system would have to solve several problems before it could replace ordinary controllers:
- Portability: laboratory stimulation hardware would need to become compact and usable outside a research setting.
- Richer commands: one binary cue is far less expressive than the many inputs required by a modern game.
- Reliable feedback: sensations would need to remain consistent across users and sessions.
- Safety oversight: stimulation systems would require clearly defined limits, training and medical or technical supervision where appropriate.
- Game compatibility: developers would need interfaces that work with ordinary game engines rather than a bespoke two-choice maze.
Useful comparisons for any later product should include whether it stimulates the brain or decodes brain signals, how many commands it supports, whether it is invasive, how portable it is, what sensory feedback it provides, its accuracy and setup time, its safety requirements and compatibility with existing games.
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The bottom line on “playing with only your mind”
The UW study was a genuine human-computer interaction demonstration: five people used a TMS-generated phosphene to receive directional information and achieved 92 percent correct moves, compared with 15 percent without that guidance. But the task was a small binary maze, the equipment was bulky, and the system did not read thoughts or control a normal video game. It showed that the brain can use an artificial signal—not that consumer mind-controlled gaming has arrived.
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