Elon Musk’s Neuralink Volunteers Are Reporting Strange Side Effects

Brain implant patients describe experiences that sound more like science fiction than medicine

Photo by Vitaly Gariev on Unsplash

I’ve always been the guy who opens things that say Do Not Open. When I was nine, it was my cousin’s RC car remote. I wanted to know how the signal traveled through air. I didn’t fix it after I snapped the antenna spring, but I learned something: curiosity has a cost, and sometimes that cost is an angry cousin. So when I started reading about these Neuralink volunteers, you know, the ones who got the implant right behind the ear where skull meets nerve cluster, my first reaction was that same hum under the skin. Curiosity. Risk humming behind it like static.

But here’s what happened. I started hearing people talk about side effects. Not the usual stuff like headaches or dizziness. I mean full-blown sensory cross-talk. One guy said he tasted colors in his dreams. Another said his thoughts started feeling like they were coming in from outside, like radio signals layered under his own voice. I don’t know if that part’s true. I suspect there’s a little myth-making happening. Humans love a good story.

When Tech Gets Too Close

I used to build neural net prototypes in a tiny office with flickering fluorescent lights that buzzed like insects trapped in a jar. We were trying to map emotional tone to waveform patterns. Just sound shaping, nothing invasive. But even that felt intimate. When an algorithm guesses your mood with 85% accuracy, something inside you shifts. You start thinking, If the machine can predict me, then what part of me is actually mine?

Now imagine the machine isn’t outside your body anymore. It’s inside. Sitting against your cortex like a quiet roommate.

The real issue is not whether the implant works. From what I’ve heard, it does — motor signals stabilize, tremors ease, thought-to-text becomes smoother. Beautiful in a clinical sense. The issue is the identity bleed. Who are you when your brain has a hardware patch?

I remember the first time I tried a haptic-feedback glove. They’d upgraded the actuator density so when I dragged my hand through simulated water, it felt cool and thick. My fingers tingled like there were invisible membranes between them. I remember thinking, My body believes this. And that was just a glove. Take that sensation and plug it directly into the cortex? Yeah. Things are going to get weird.

What They’re Saying

One volunteer said he kept hearing a low, pulsing tone at night. He described it like a bassline that never resolves, just loops. I heard something similar once after pulling a 38-hour debugging sprint. Sound without a source. The brain invents noise to fill a gap it doesn’t understand. It seems to me that the implant might be amplifying that kind of internal feedback. Like turning the gain too high on an amp so even silence becomes sound.

Another volunteer claimed he started remembering dreams in perfect detail. He felt them. Textures. Weight. Temperature. I’m not sure that’s a side effect. That might be a sign the neural pathways are running cleaner than before. Or maybe the brain is trying to balance itself like a gyroscope spinning too fast.

I keep thinking about that antenna spring I snapped as a kid. The signal still wanted to travel. It just had nowhere consistent to go.

Maybe these volunteers are experiencing that. A signal with no familiar path. So it finds new ones.

And yeah, that can get strange.

But look at it this way: We’ve always been part machine. Glasses. Pacemakers. Dental fillings. The difference now is location. The brain is personal territory. When technology crosses that border, the map of who you are gets redrawn.

So I’m curious. And a little unsettled.

What about you? Would you let something sit inside your thoughts? Tell me in the comments.