History Main / PerceptionFilter

17th Jul '16 8:53:01 AM ChronoLegion
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** Used to [[PlayedForDrama terrifying effect]] with the Silents, who you forget you encountered as soon as you are no longer looking at them.

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** Used to [[PlayedForDrama terrifying effect]] with the Silents, who you forget you encountered as soon as you are no longer looking at them. They were originally created as religious confessors, so people could confess their sins and then forget having done that, only feeling unburdened.
17th Jul '16 8:40:36 AM ChronoLegion
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* In Creator/MikhailAkhmanov's ''[[Literature/ArrivalsFromTheDark Retaliation]]'', Klaus Siebel (actually, a shapeshifting alien) uses a [[SpaceElves Lo'ona Aeo]] device to put a HumanAlien under a hypnotic trance. When his human friend Paul asks why he can't see the device, Klaus explains that he's using his PsychicPowers to selectively block Paul's vision to exclude the device. Otherwise, he'd be in a trance as well.
17th Jul '16 7:29:35 AM IamTheCaligula
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* Koishi Komeiji of ''VideoGame/{{Touhou}}'' uses her power over the subconscious mind in this way to move about unnoticed by others.

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* Koishi Komeiji of ''VideoGame/{{Touhou}}'' uses her has the power over to manipulate the subconscious mind in mind. A few [[PowerIncontinence passive effects of this way to move about unnoticed power]] is that she cannot be percieved by others.others unless she's practically standing right in their faces and also cannot be remembered once she moves out of a person's field of vision. These powers [[InvisibleToAdults do not affect children]], who can [[NotSoImaginaryFriend percieve, play with]] and remember her until they grow up, at which point she fades from their memory as well.
14th Jul '16 1:01:43 PM lavendermintrose
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* In ''Anime/CodeGeass'' fanfics, this is often given as a Geass power. It doesn't show up as one in the series, but it fits the rules for how they work (they only affect the mind). It is most often given to Suzaku - since the manifestation of an individual's Geass is based on what they would wish for, and Suzaku [[DeathSeeker would want to disappear]], it fits him.
1st Jul '16 12:45:31 AM PaulA
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** Also introduced is the "SEP Field" of ''Literature/LifeTheUniverseAndEverything'', which makes things invisible very practically and effectively by causing people to believe that whatever is inside the field is Somebody Else's Problem. The novel [[DolledUpInstallment started life]] as a spec script for ''Series/DoctorWho''; the SEP Field is a [[{{Pun}} transparent]] {{Expy}} for that franchise's Perception Filter.

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** Also introduced is the "SEP Field" of ''Literature/LifeTheUniverseAndEverything'', which makes things invisible very practically and effectively by causing people to believe that whatever is inside the field is Somebody Else's Problem. The novel [[DolledUpInstallment started life]] as a spec script for ''Series/DoctorWho''; the SEP Field is a [[{{Pun}} transparent]] {{Expy}} for that franchise's Perception Filter.
15th Jun '16 6:49:03 PM coyotebuffet
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* In ''VideoGame/WarCraft'', the mage unit's spell Invisibility is described as " this spell grants the ability to cloud the perceptions of others so that they cannot perceive the physical existence of the caster's target."

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* In ''VideoGame/WarCraft'', the mage unit's spell Invisibility is described as " this spell grants the granting "the ability to cloud the perceptions of others so that they cannot perceive the physical existence of the caster's target."
15th Jun '16 6:48:31 PM coyotebuffet
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* In ''Videogame/Warcraft", the mage unit's spell Invisibility is described as " this spell grants the ability to cloud the perceptions of others so that they cannot perceive the physical existence of the caster's target."

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* In ''Videogame/Warcraft", ''VideoGame/WarCraft'', the mage unit's spell Invisibility is described as " this spell grants the ability to cloud the perceptions of others so that they cannot perceive the physical existence of the caster's target."
15th Jun '16 6:42:49 PM coyotebuffet
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* In ''Videogame/Warcraft", the mage unit's spell Invisibility is described as " this spell grants the ability to cloud the perceptions of others so that they cannot perceive the physical existence of the caster's target."
17th May '16 6:53:47 PM Luigifan
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Your standard invisibility typically makes you transparent to light. While quite effective, it does have a number of catches, since you usually can be heard or otherwise detected. Not to mention that you would be completely blind if it worked realistically.[[note]] Your eye works by absorbing light energy and converting it into electric impulses in your nerves. Thus, being transparent means no light absorption, causing no electric signals being generated and making you blinder than a bat, which it turns out can generally see quite well.[[/note]] So it's actually not a good way of being stealthy.

Perception filter does not have these catches, because it affects the minds of the observers, making them subconsciously look in another direction or pay no attention to the subject, or erasing the subject from short term memory. It does have a few catches of its own, though: it obviously doesn't work on cameras and other objects that don't have a mind to screw with.

Very often used by witches in {{fantasy}}, aliens in {{science fiction}} and anyone else trying to pass unnoticed amoung {{muggle}}s.

See also: WeirdnessCensor where it's the Muggles themselves that choose to ignore it, InvisibleToNormals where it's the laws of nature that causes it, TheNondescript where it's something/someone so unremarkable no one gives them a second thought. Compare JediMindTrick.

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Your standard invisibility typically makes you transparent to light. While quite effective, it does have a number of catches, since you usually can be heard or otherwise detected. Not to mention that you would be completely blind if it worked realistically.[[note]] Your [[note]]Your eye works by absorbing light energy and converting it into electric impulses in your nerves. Thus, being transparent means no light absorption, causing no electric signals being generated and making you blinder than a bat, which it turns out can generally see quite well.[[/note]] So it's actually not a good way of being stealthy.

Perception filter does not have these catches, because it affects the minds of the observers, making them subconsciously look in another direction or pay no attention to the subject, or erasing the subject from short term short-term memory. It does have a few catches of its own, though: it obviously doesn't work on cameras and other objects that don't have a mind to screw with.

Very often used by witches in {{fantasy}}, aliens in {{science fiction}} fiction}}, and anyone else trying to pass unnoticed amoung {{muggle}}s.

See also: WeirdnessCensor WeirdnessCensor, where it's the Muggles themselves that choose to ignore it, InvisibleToNormals InvisibleToNormals, where it's the laws of nature that causes it, TheNondescript and TheNondescript, where it's something/someone so unremarkable that no one gives them a second thought. Compare JediMindTrick.



* In ''Anime/GhostInTheShell'''s {{cyberpunk}} future, most people have cybernetic eye-implants, which allows sufficiently skilled hackers to essentially edit themselves out of people's vision; this trick is used in ''Anime/GhostInTheShellStandAloneComplex'' by the [[AntiVillain Laughing Man]] [[spoiler: and Major when she's impersonating him.]]

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* In ''Anime/GhostInTheShell'''s {{cyberpunk}} future, most people have cybernetic eye-implants, which allows sufficiently skilled hackers to essentially edit themselves out of people's vision; this trick is used in ''Anime/GhostInTheShellStandAloneComplex'' by the [[AntiVillain Laughing Man]] [[spoiler: and [[spoiler:and Major when she's impersonating him.]]
8th May '16 11:22:51 AM TSBasilisk
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* In ''LightNovel/KumoDesuGaNaniKa'' Shiraori uses a spell to keep people from staring at or bothering her due to her exotic beauty. People who see her will think she has not outstanding features and will only recall "white". Repeated exposure or knowing her appearance breaks the spell.
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