Research into sensation never fails to draw funding from the entertainment and hedonism industries, so it is perhaps surprising that the field's holy grail, full manipulation, took so long to achieve. The necessary psychosurgical techniques have proved almost as difficult to perform as they were to develop. Combine that with high demand, and its easy to see why the prices for these procedures runs very high.
The most common tweaks are based around pain and pleasure. Soldiers often choose to have their sense of pain minimized, maintaining it for safety but at a merely uncomfortable level. Hedonists experiment by swapping feelings between stimuli, or experiencing the formally unpleasant as pleasurable.
Designer qualia are installed as a psychosurgical procedure [High].
Timeframe: 1 week
Designer qualia can have many in-game effects, such as granting the High Pain Tolerance trait.