Paralysis field

A paralysis field, also known as a neural field, was a technological device utilized by the Kelvans to neutralize the nerve impulses to an individual's voluntary muscles. The beam was emitted from a paralysis projector worn on the user's belt.

Rojan used the paralysis field against Captain Kirk and his landing party from the USS Enterprise (NCC-1701) to ensure cooperation. After the Kelvans took over the Enterprise, Kirk and the remaining crewmembers attempted to find ways to counteract the field's effects.