Ghost in the Machine: The Sleep-Onset Hallucination

If you have Parkinson’s, the boundary between “Awake” and “Asleep” isn’t a clean line—it’s a blurry, glitchy mess. Lately, I’ve been experiencing what I call “Ghost Input.” My brain is running commands on hardware that isn’t even plugged in.

The Swiping Incident (Hypnagogic Hallucinations)

Yesterday, as I was dropping off for a snooze, I was busy swiping apps away on my phone. My thumb was moving, the “feeling” of the screen was there, and the mental intent was clear. Then I snapped to. No phone. My hands were empty.

• The Glitch: This is a “Hypnagogic Hallucination.” In the “Rusted System,” the dopamine levels are often in a tailspin during sleep transitions. Your brain starts the “Dream OS” before the “Reality OS” has fully shut down.

The Purple Paradox (Tactile Illusions)

Just now, I was at my PC, drifting off, and I gave Purple (my Black Lab) a nice little stroke on the back with my index finger. I could feel the fur. Except Purple was across the room, and I was actually stroking my own joggers.

• The Glitch: This is a tactile illusion. My brain took a real sensation (touching my leg) and remapped it to a familiar memory (petting the dog) because the “Sensory Processing Unit” is currently operating with a massive amount of packet loss.

The Roast Potato Debate (Internal Auditory Leak)

And then there was the full-on conversation with Sarah about roast potatoes. In my head, we were mid-debate. In real life, I was alone in a quiet room.

• The Glitch: This is your REM cycle “leaking” into your semi-conscious state. Usually, your brain “paralyzes” these thoughts so they stay in your dreams. In a Parky brain, that “firewall” is full of holes.

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🔬 Why is the Software Crashing?

1. The Dopamine Side Effect: The very meds we take to keep us moving (Carbidopa/Levodopa) are notorious for causing “Vivid Dreaming” and sleep-onset hallucinations. It’s the trade-off for being able to walk.
2. REM Sleep Behavior Disorder (RBD): About $50\%$ of us have a system where the “Dream Paralysis” doesn’t work. We act out our dreams, talk in our sleep, and sometimes, we see the dreams while our eyes are still open.
3. The “Insight” Save: The good news? I know it’s a hallucination the second it stops. Doctors call this “Retaining Insight.” As long as I know the roast potato debate wasn’t real, my “Executive Function” is still winning the war.

The Lesson

Don’t panic. You aren’t “losing it.” Your brain is just a high-performance computer with a corrupted sleep-mode driver. It’s weird, it’s frustrating, and it’s a bit eerie, but it’s just another day in the life of a Rusted System.