Sensory Deprivation Tank

Lore & Background

The tank's significance escalated when it became the catalyst for events that would plague Hawkins in 1983. Within this floating cocoon of salt water, Eleven first opened a gate to the parallel dimension, inadvertently releasing the creature that would terrorize the town. The tank remains forever linked to the moment the barrier between worlds was shattered.

In Their Own Story

The hum of the filtration system was the only sound in the sterile white room. Inside the glass cylinder, salt water cradled her body, a weightless prison of silence. She closed her eyes, but darkness was no longer an absence; it was a canvas. Her mind stretched, pulling away from the cool liquid and the cold floor tiles. She drifted upward, through the ceiling, past the stars, until she saw the red lightning crackling in a sky that wasn't hers. A shadow moved in the periphery of her vision—a creature with teeth like jagged glass. She tried to pull back, but the silence held her fast, and the gate swung wide.

Reader's Guide

Visually stark, the device consists of an opaque cylinder filled with temperature-controlled salt water. The high salinity ensures effortless buoyancy, eliminating muscle tension and tactile feedback, while the chamber's soundproofing creates absolute silence. For a standard human, this induces deep relaxation; for a psychically gifted subject like Eleven, it acts as a lens. By removing external noise, the mind can focus entirely on remote viewing or navigating interdimensional space without physical limitation. The primary wielder of this technology was Eleven, who used it under Dr. Brenner's supervision to spy on enemies and eventually breach the dimensional barrier.

Did You Know?

• The tank was housed within Hawkins National Laboratory and used under Dr. Martin Brenner's direction.
• Eleven first opened a gate to the parallel dimension while inside this tank in 1983.
• The tank's salt water and soundproofing create absolute silence to aid psychic focus.
• The high salinity ensures effortless buoyancy, eliminating muscle tension and tactile feedback.