A mnemonic feed is an alternate application of the neural mesh. It is a direct recording of a person's consciousness over a given length of time. This can then be "played back" into another neural mesh (or the same one), allowing the user to experience the memory all over again, or allowing a more unscrupulous person to implant it as a "hidden memory". In the case of memory induction, the person will experience it at some later point (whenever they would be "reminded" of it) as a long-forgotten memory being reawakened.
Early versions are simple record/playback models, and include the entire experience of the original person (including emotions). Soon after postproduction techniques develop allowing the producer to strip or dampen aspects of the experience (such as those same emotions). As postproduction techniques improve, the memories can be altered (or, at later points, created whole-cloth) using qualia (the same as those recorded into qualia lenses), and can even be made interactive, to allow personal choice and branching feeds to be introduce to the otherwise static construct of the mnemonic feed. These feeds can become hot consumer items, but it's entirely possible that a subtle memetic queue is inserted into the most popular ones to induce an addiction response to the feed.
This leads to an important detail - moreso than qualia lenses, mnemonic feeds are prime vectors for memetic attacks. Not only can they be more subtly woven into edited feeds, a feed with a strong emotional content will automatically be considered a weak to moderate memetic attack as the emotions override the person's native ones (this is called "feedburn", and the primary symptoms is internal competition between the feed's personality and the user's). In addition, if the recording includes a memetic attack, anybody "viewing" the feed will also receive the memetic attack.
Tech Levels: BioTech 4 and MetaTech 4. CogniTech 4 for simple recording/playback feeds, CogniTech 5 for simple editing of feeds, CogniTech 7 for advanced "concocted" feeds, Cognitech 8 for branching feeds. Due to the all-encompassing nature of the mnemonic feed, it is generally easier to simulate the experiences it produces - immersive illusions are easier to make convincing.
Cost: Cheap. Assuming they don't become the source of controversy, mnemonic feeds are the futuristic equivalent to hi-def movies.
Descriptors: Procedure for the recording and postproduction processes, dataform for the results.