Azure Nebula - Sulu wants to go through the Azure Nebula since it will conceal their approach to Kronos; it is a Class 11 nebula and it will take the Excelsior 5 hours to traverse it; the nebula is composed primarily of oxyen and argon with traces of theta-xenon, fluorine and sirillium. (Flashback)
Bussard collectors - Torres says that they can use the bussard collectors to cut through the nebula to gather the sirillium. (Flashback)
Cathira - The approximate translation of this Vulcan word is "structure of harmony"; Tuvok is trying to complete the cathira when Kes comes to his quarters; it is a meditational aid; building it requires precise balance and spatial acuity; it helps focus thought and refine mental control; the form of the cathira is not predefined but is a reflection of the builder's state of mind. (Flashback)
Conduit - Ensign Tuvok detects that there is a rupture in the plasma conduit behind Valtane's console and tries to warn him about it; Valtane is killed when it explodes. (Flashback)
Cortical stimulator - The Doctor uses the cortical stimulator when Tuvok's memory engrams begin to destabilize and he is unable to break the mind-meld between Tuvok and Janeway; he sets it to emit thoron radiation to bombard his telepathic cortex to try to terminate the meld. (Flashback)
Cordrazine - The Doctor gives Tuvok 50 mg's of cordrazine after the mind-meld is broken the first time. (Flashback)
Deflector shield - The sirillium from the nebula could be used to boost the deflector shield efficiency. (Flashback)
Excelsior - Tuvok's first deep space assignment was aboard the USS Excelsior 80 years ago; Sulu was the Captain; Ensign Tuvok and Janeway appear on the Excelsior during the mind-meld; the Excelsior played a pivotal role in the battle at Khitomer. (Flashback)
Federation-Klingon peace treaty - The destruction of the Klingon moon Praxis led to the signing of this treaty. (Flashback)
Gaseous anomaly - Voyager detects a gaseous anomaly that contains sirillium; the anomaly is a Class 17 nebula with the standard amounts of hydrogen and helium and 7000 parts per million of sirillium. (Flashback)
Golwat - Bolian female; Ensign on Voyager; Neelix said that she thought the juice he made was delicious and even had a second glass; she has a cartilaginous lining that protects her against even the most corrosive acid. (Flashback)
Holographic imaging resolution - Tuvok says that 23rd century holographic imaging resolution was less accurate; this accounts for why Sulu doesn't look like his portrait at Starfleet headquarters. (Flashback)
Juice - Neelix prepares juice for Tuvok; the juice is made out of anthraxic citrus peel and orange juice with just a hint of papala seed extract. (Flashback)
Kang (Michael Ansara) - Kang is the captain of the Klingon battle cruiser that confronts the Excelsior in the nebula. (Flashback)
Khitomer - The Excelsior played a pivotal role in the battle at Khitomer. (Flashback)
Kilo-dyne - A unit of measurement; the Doctor gives Tuvok a 20 kilo-dyne burst of thoron radiation with the cortical stimulator to try to break the mind-meld; he later increase it to an 80 kilo-dyne burst. (Flashback)
Kirk - Starfleet Captain; he and Doctor McCoy were accused of murdering the Klingon chancellor; Sulu served with them for a long time and says he owes his life to them a dozen times over; Janeway says that Kirk, McCoy and Sulu belonged to a different breed of Starfleet officer. (Flashback)
Klingon - Tuvok mistakenly believes they are near Klingon space and suggests that Voyager conduct a tachyon sweep of the nebula to reveal the presence of any cloaked ships; a Klingon battle cruiser confronts the Excelsior in the Azure Nebula; Kang is the captain of the Klingon ship. (Flashback)
Kohlinar - The Kohlinar is a rigorous discipline intended to purge all emotions and embrace pure and total logic; Tuvok immersed himself in the Kohlinar after he left Starfleet. (Flashback)
Kronos - Sulu sets a course for Kronos to try to rescue Captain Kirk and Doctor McCoy after they are accused of murdering the Klingon chancellor. (Flashback)
McCoy - Starfleet doctor; he and Captain Kirk were accused of murdering the Klingon chancellor; Sulu served with them for a long time and says he owes his life to them a dozen times over; Janeway says that Kirk, McCoy and Sulu belonged to a different breed of Starfleet officer. (Flashback)
Memory engrams - The memory engrams in the dorsal region of Tuovk's hippocampus are being disrupted and causing physical damage to him; the Doctor discovers that a viral parasite is masquerading as an memory engram. (Flashback)
Mind meld - Vulcan psychocognitive research suggests that the patient experiencing T'lokan schism initiate a mind-meld with a family member to bring the repressed memory into the conscious mind; Tuvok asks Janeway to mind-meld with him since she is the closest thing he has to family on Voyager; during the mind-meld they end up on the Excelsior. (Flashback)
Nebula - The anomaly is a Class 17 nebula with the standard amounts of hydrogen and helium and 7000 parts per million of sirillium; the nebula that the Excelsior encountered was a Class 11 nebula; both nebulas contained trace amounts of sirillium. (Flashback)
Neuro-cortical monitor - The Doctor has Tuvok wear this monitor so that they can record a complete encephelographic profile if he has another episode; the monitor will also alert sick bay. (Flashback)
Parasite - - The Doctor discovers a viral parasite masquerading as a memory engram in Tuvok's brain; the origin and genome classification of the parasite is not on record; it thrives on peptides generated in the brain; the Doctor was able to kill it with thoron radiation; the parasite used the memory of the girl falling off the precipice as camoflage so that the host's mind would repress it; when the parasite sensed death in its host, it would find another host. (Flashback)
Peptide - Kes comes to Tuvok's quarters later because the Doctor wanted her to pick up additional peptide readings on Tuvok. (Flashback)
Plasma - The sirillium from the nebula would be useful as a warp plasma catalyst. (Flashback)
Pon Farr - Tuvok postponed his studies when he began Pon Farr and he took T'Pel for a mate. (Flashback)
Poroccan eggs - Neelix says that these eggs are the most flavorful in the sector; he scrambles them with a little dill weed and and touch of rangasso; after they were picked up on Poroccus Four, they had to be sterilized for 3 days in a cryostatic chamber and then had to be parboiled. (Flashback)
Poroccus Four - The poroccan eggs were picked up on Poroccus Four. (Flashback)
Positron beam - Ensign Tuvok proposes that if they modify a positron beam to a subspace frequency, it will trigger a thermochemical reaction in the sirillium. (Flashback)
Praxis - Praxis is the Klingon moon; it was the primary source of energy for the Klingon homeworld until it exploded; the Excelsior encounters a subspace shockwave originating from Praxis; the destruction of Praxis led to the Federation-Klingon peace treaty. (Flashback)
Precipice - Tuvok experiences an event where he is trying to save a little girl from falling into a precipice; the Doctor believes that this may be a repressed memory. (Flashback)
Pyllora - Janeway acts as Tuvok's pyllora during the mind meld; a pyllora is a guide that helps the subject reconstruct the memory in its entirety and objectify the experience; the pyllora helps the subject reintegrate the memory into the conscious mind; the pyllora is an observer and not a participant, so no one else but Tuvok will notice Janeway's presence as he relives the memory. (Flashback)
Rand (Grace Lee Whitney) - Female Commander on the USS Excelsior; it took her 3 years to make Ensign; communications is her station; Tuvok uses the Vulcan neck pinch in order to steal her clothes for Janeway to wear. (Flashback)
Rangasso - Neelix prepares the poroccan eggs with a touch of rangasso in them. (Flashback)
Repressed memory - The Doctor believes that the episode that Tuvok experience at the precipice is a repressed memory; the memory engrams in the dorsal region of his hippocampus are being disrupted and causing physical damage to Tuvok. (Flashback)
Science officer - Emsign Tuvok was one of several junior science officers on the USS Excelsior. (Flashback)
Sirillium - Sirillium is a highly combustible and versatile energy source; Voyager discovers a gaseous anomaly that contain sirillium and wants to stockpile it for later use; Neelix wants to inject it into the thermal array in his kitchen to improve cooking time; it could also be used as a warp plasma catalyst and to boost deflector shield efficiency; the Azure nebula that the Excelsior encounters also has trace amounts of sirillium; Ensign Tuvok proposes that if they modify a positron beam to a subspace frequency, it will trigger a thermochemical reaction in the sirillium. (Flashback)
Storage bay 3 - Neelix is using this as a pantry; Janeway wants to convert storage bay 3 into a containment chamber for the sirillium they hope to gather from the nebula. (Flashback)
Sulu (George Takai) - Captain Sulu sponsored Chakotay at Starfleet Academy (Tattoo) Sulu is the captain of the USS Excelsior; he likes to drink tea every morning; Tuvok brings him a Vulcan blend of tea; Janeway says that he doesn't look anything like his portrait at Starfleet headquarters; he served with Captain Kirk and Doctor McCoy for a long time and says he owes them his life a dozen times over; Janeway says that Kirk, McCoy and Sulu belonged to a different breed of Starfleet officer; Sulu decides to try to rescue Kirk and McCoy after they are arrested for the assassination of the Klingon chancellor, but he was forced to retreat back to Federation space. (Flashback)
Tachyon sweep - Tuvok is confused when he mistakenly suggests that Voyager conduct a tachyon sweep of the nebula since this would reveal the presence of cloaked Klingon ships. (Flashback)
Talax - On Talax, it is a tradition to share the history of a meal before beginning to eat. (Flashback)
Targeting scanners - The Excelsior's targeting scanners are damaged in the sirillium blast; Valtane switches them to manual. (Flashback)
Thermal array - Neelix wants to inject sirillium into the thermal array to improve cooking time; Torres says that this will blow up half the kitchen in the process. (Flashback)
Thoron radiation - The Doctor tries to break the mind meld by exposing Tuvok to thoron radiation; the radiation causes a hidden viral parasite to manifest itself; he increases the radiation level and is able to destroy the parasite. (Flashback)
T'lokan schism - The Doctor believes that Tuvok is experiencing T'lokan schism which occurs when a subject is inhibiting a traumatic memory which begins to resurface; Vulcan psychocognitive research suggests that the patient initiate a mind-meld with a family member to bring the repressed memory into the conscious mind. (Flashback)
T'Pel - Tuvok postponed his studies when he took T'Pel as a mate. (Flashback)
Valtane, Dimitri (Jeremy Roberts) - Lieutenant on the USS Excelsior; he was Ensign Tuvok's bunkmate; (Flashback)
Virus - The Doctor discovers a viral parasite masquerading as a memory engram in Tuvok's brain. (Flashback)
Vulcan neck pinch - Ensign Tuvok uses the Vulcan neck pinch on Rand so that they can steal her uniform for Janeway to wear. (Flashback)
Wyoming - Janeway thought that Tuvok's first assignment was on the Wyoming. (Flashback)
Yorktown - Tuvok received a message from his father on the Yorktown while he and Janeway are on the Excelsior during the mind meld. (Flashback)
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