On a mapping journey the Enterprise hosts a party of Ullian 'mind historians', specialists who telepathically retrieve people's long-forgotten memories from many races. Keiko O'Brien and Dr. Crusher enjoy resuscitating pleasant memories, but the Ullian leader Tarmin's frustratingly overbore son Jev abuses his abilities on non-volunteers, against their code, and enters their thus nightmare-altered memories as a key character, leaving Troi and Riker in an apparently unprovoked coma which only resembles the rare neurosis irizine, without the associated histamine level change. Then it happens to Crusher the bad way, but Troi wakes up after three days, alas with a total black-out. After eliminating any other imaginable cause, Picard has to suspect the Ullians, Troi accepts a memory probe by Jev, who makes her believe it's Tarmin's doing, but Geordi and Data do some research... Written by
Did You Know?
The writing staff created memory flashbacks for every major character before Riker, Troi and Beverly were chosen. One involved Ensign Ro's actions resulting in a court-martial. Another was La Forge's traumatic childhood memory of being caught in a fire, which was used in the previous installment Star Trek: The Next Generation: Hero Worship
(1992) instead. See more
Doctor Crusher refers to the thalamus as "the part of the cerebral cortex involved in memory function." However the thalamus is not part of the cerebral cortex, and is not considered all that vital to most memory processes. See more
Commander William T. Riker
I just thought... it might help to hear a friendly voice - even if you don't know you're hearing it.
Referenced in Star Trek: Nemesis
Star Trek: The Next Generation Main Title
Composed by Jerry Goldsmith
and Alexander Courage See more