Delta Wave Inducer

A delta-wave inducer.

Also referred to as a "neural stabilizer", a delta-wave inducer is a medical instrument.

Primarily used to induce sleep in patients, it can be used during an operation in place of more traditional anesthesia.
A secondary function of this device is to promote and accelerate the patient's natural healing process, as many medical professionals believe the body does its best healing when it is asleep.

When a humanoid is in deep sleep, they naturally produce delta waves.

See also:

• Somnetic Inducer
• Alpha-wave Inducer