Hypnotic Voice

[Ivona]

I'd like some opinions about the merit Hypnotic Voice, specifically about the possibilities of a Deep Trance.

Deepening the Trance
Once a subject is put into a light trance, the character
can attempt to hypnotize him further. The player must roll
Manipulation + Persuasion (– the subject’s Composure).
While such a deep trance lasts, the hypnotist gains a +2
bonus on all Social rolls against the subject (+5 with an exceptional
success), she can persuade him to perform almost
any non-dangerous action, and she can give post-hypnotic
suggestions that can affect the subject’s perceptions or even
beliefs (such as the stereotypical depiction of the hypnotist
making a subject bark like a dog). A deep trance lasts for a
scene, after which the subject goes into a normal sleep and
stays out for hours unless awoken by mundane means.
While the subject is in a deep trance, the hypnotist can
attempt to get him to perform actions that violate his Morality
or Virtue, or that are obviously dangerous or suicidal.
The hypnotist must phrase such commands in a manner
calculated to work around the subject’s beliefs, however. A
conservative preacher might rebel at being ordered to strip
down in front of strangers, but if persuaded that he was a male
dancer, such inhibitions can be overcome. Commands calculated
to overcome Morality or Virtue or that place a subject
in grave danger suffer a penalty in a Social roll based on how
well the hypnotist works around the subject’s inhibitions.

(Second Sight, page 66)

Specifically, I'm wondering about the post-hypnotic suggestions. Are thos meant to be suggestions that only work -during- the trance, i.e. make someone think they're someone else until they wake up, or can it actually modify the subconscious beyond that... such as making someone forget a certain occurance, or at least not speak about it to a certain individual? Also, would an individual remember anything about what happened during a deep trance?

[Morrigan]

It would be something after the trance, yes, but normally those have to be something subtle. They could implant a doubt, or a fear, something of that nature, or maybe a very subtle urge. Perhaps they could leave you with a lingering suspicion of your best friend, something that you would reasonably assume to be true at that point based on a 'gut' feeling, something you wouldn't care to explain. It's not mind control in its most obvious form, but could be used for very subtle manipulations of behavior or thought. Thus, post-hypnotic suggestion.