Missing Time Syndrome

Missing Time Syndrome was an old Earth name given to a condition where individuals were not capable of remembering parts of their life.

This was typically done by advanced races when studying certain individuals and blanked their memories so they would not remember the encounter. The Reticulii, the First Contact Office and forms of mind control research were capable of accomplishing this affect.

In 2375 when Quark could not remember the Day of Withdrawal, it was suggested that perhaps he was suffering from Missing Time Syndrome due to Cardassian experiments. (DS9 novel: Millennium The Fall of Terok Nor)