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Flash can perceive events in less than an attosecond.

Reactions

Reactions may be defined simply as the time between a stimulus and a response. Three basic reaction time paradigms have been described:

  • 1. Simple reaction time has a single stimulus and a single predefined response.
  • 2. Recognition reaction time has several false stimuli mixed with one correct stimulus prompting the response.
  • 3. Choice reaction time involves multiple stimuli and differing responses for each stimulus. Serial reaction time is a combination of recognition and choice reaction time, where the stimulus is a repeating sequence that the subject must learn to predict and then to respond in a prescribed fashion.

An example of simple reaction time would be the time from a buzzing sound to moving a finger. Adding false chime or ring sounds would convert the model to recognition reaction time, while creating different responses for the chime or other ring sounds would convert the model to a measurement of choice reaction time.

Reaction Tiers for Reaction Timeframes Only

Below Average perception: any real number higher than 2e-1 seconds

Normal Human perception: 2e-1 to 1.30e-1 seconds

Athletic Human perception: 1.30e-1 to 9.97e-2 seconds

Peak Human perception: 9.97e-2 to 8.05e-2 seconds

Superhuman perception: 8.05e-2 to 6.48e-3 seconds

Superhuman+ perception: 6.48e-3 to 3.64e-3 seconds

Transonic perception: 3.64e-3 to 2.78e-3 seconds

Transonic+ perception: 2.78e-3 to 2.24e-3 seconds

Supersonic perception: 2.24e-3 to 9.26e-4 seconds

Supersonic+ perception: 9.26e-4 to 5.83e-4 seconds

Hypersonic perception: 5.83e-4 to 3.89e-4 seconds

Hypersonic+ perception: 3.89e-4 to 2.92e-4 seconds

High Hypersonic perception: 2.92e-4 to 1.67e-4 seconds

High Hypersonic+ perception: 1.67e-4 to 1.17e-4 seconds

Massively Hypersonic perception: 1.17e-4 to 6.67e-8 seconds

Massively Hypersonic+ perception: 6.67e-8 to 3.34e-8 seconds

At most Relativistic perception: 3.34e-8 to 6.67e-9 seconds

At most Relativistic+ perception: 6.67e-9 to 3.34e-9 seconds

Speed of Light perception: 3.34e-9 seconds

Faster Than Light perception: Below 3.34e-9 seconds