A restraint fitted to captives of the Orion Syndicate that delivers disabling pain on command, used on the Enterprise crew members seized for the slave market in Borderland.
Neurolytic restraints are the devices with which Orion slavers control their prisoners. Triggered remotely, they cause intense pain and can incapacitate or kill anyone who resists or tries to flee. They appear in the Enterprise episode Borderland.
In 2154 Orion interceptors attack Enterprise in the Borderland and beam away nine of the crew, including T'Pol, to be sold at a slave market. Archer takes the geneticist Arik Soong, released from prison to help track his escaped Augments, down to the market to recover them.
Soong works out how to disable the restraints, and when he does so the captives of many species rise against their guards, allowing the Enterprise crew to be beamed out in the confusion. Soong uses the same chaos to try to escape.