Streamer’s Brain-Controlled Experiment Raises Safety Concerns

Streamer PerriKaryal, known for completing Elden Ring using only her thoughts, recently undertook a more ambitious and potentially dangerous experiment: controlling her real-world movements with a brain-computer interface. The attempt, documented on TikTok and Twitch, involved a custom-built device that utilized galvanic vestibular stimulation, ultimately leading to concerning side effects and a strong warning against replication.

The Experiment and Technology

PerriKaryal designed a device that connects directly to the head, employing galvanic vestibular stimulation. This technique works by applying an electric current to the head, aiming to disrupt the brain’s balance system and induce temporary imbalance GamesRadar+. In a TikTok video, PerriKaryal demonstrated the device, showing an external controller manipulating her movements whereas a circuit board node was attached to her head.

The experiment continued on Twitch with an attempt to play the arcade racing game Trackmania, with the intention of experiencing ‘g-force’ sensations directly. Although, the results were far from the intended immersive experience.

Adverse Effects and Warning

Instead of the desired g-force sensation, PerriKaryal experienced severe headaches, a burning sensation, “buzzing” vision, and visual hallucinations. These effects prompted an immediate and emphatic warning to her audience. “I do not condone this behavior. This is exceptionally dangerous and I am not responsible,” she stated in a TikTok video GamesRadar+.

PerriKaryal repeatedly urged viewers not to attempt to build or apply similar devices, emphasizing the significant risks involved. Despite holding a Master’s degree in psychology, she acknowledged the inherent dangers of directly intervening with human bodily functions.

Safety Concerns and Expert Commentary

The incident highlights the critical need for caution when experimenting with brain-computer interfaces and direct neurological stimulation. Experts caution against attempting such experiments without a strong scientific background and professional supervision. The potential for serious harm is significant, even for individuals with relevant educational qualifications.

This event serves as a reminder of the ethical boundaries surrounding innovation and the importance of prioritizing safety when exploring emerging technologies. The incident occurred on Wednesday, February 18, 2026.

PerriKaryal’s Previous Achievements

PerriKaryal previously gained attention for her unique gaming accomplishments, including completing Elden Ring using only her mind TikTok and undertaking an Elden Ring Nightreign challenge controlled by brain waves TikTok.