Reactions
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
| Perception Tier | Perceived Time (seconds) | Perceived Time (alternate units) | SI Equivalent (m/s) | Notes |
|---|---|---|---|---|
| Below Average perception | > 2.00e-1 | > 200 milliseconds | < 5.00 | |
| Normal Human perception | 2.00e-1 to 1.30e-1 | 200 to 130 milliseconds | 5.00 to 7.69 | |
| Athletic Human perception | 1.30e-1 to 9.97e-2 | 130 to 99.7 milliseconds | 7.69 to 10.03 | |
| Peak Human perception | 9.97e-2 to 8.05e-2 | 99.7 to 80.5 milliseconds | 10.03 to 12.42 | |
| Superhuman perception | 8.05e-2 to 6.48e-3 | 80.5 to 6.48 milliseconds | 12.42 to 154.32 | |
| Superhuman+ perception | 6.48e-3 to 3.64e-3 | 6.48 to 3.64 milliseconds | 154.32 to 274.73 | |
| Transonic perception | 3.64e-3 to 2.78e-3 | 3.64 to 2.78 milliseconds | 274.73 to 359.71 | |
| Transonic+ perception | 2.78e-3 to 2.24e-3 | 2.78 to 2.24 milliseconds | 359.71 to 446.43 | |
| Supersonic perception | 2.24e-3 to 9.26e-4 | 2.24 milliseconds to 926 microseconds | 446.43 to 1,079.91 | |
| Supersonic+ perception | 9.26e-4 to 5.83e-4 | 926 to 583 microseconds | 1,079.91 to 1,715.27 | |
| Hypersonic perception | 5.83e-4 to 3.89e-4 | 583 to 389 microseconds | 1,715.27 to 2,570.69 | |
| Hypersonic+ perception | 3.89e-4 to 2.92e-4 | 389 to 292 microseconds | 2,570.69 to 3,424.66 | |
| High Hypersonic perception | 2.92e-4 to 1.67e-4 | 292 to 167 microseconds | 3,424.66 to 5,988.02 | |
| High Hypersonic+ perception | 1.67e-4 to 1.17e-4 | 167 to 117 microseconds | 5,988.02 to 8,547.01 | |
| Massively Hypersonic perception | 1.17e-4 to 6.67e-8 | 117 microseconds to 66.7 nanoseconds | 8,547.01 to 14,992,503.75 | |
| Massively Hypersonic+ perception | 6.67e-8 to 3.34e-8 | 66.7 to 33.4 nanoseconds | 14,992,503.75 to 29,940,119.76 | |
| Relativistic perception | 3.34e-8 to 6.67e-9 | 33.4 to 6.67 nanoseconds | 29,940,119.76 to 149,925,037.48 | |
| Relativistic+ perception | 6.67e-9 to 3.34e-9 | 6.67 to 3.34 nanoseconds | 149,925,037.48 to 299,850,299.40 | |
| Lightspeed perception | 0 | 0 seconds | 299,792,458 (c) | No time passes in perceiver's frame. Stimulus and response are simultaneous from their perspective. |
| Faster Than Light perception | Undefined / Negative | Undefined / Negative | > 299,792,458 (theoretically) | Perceived time cannot be positive. Fiction may depict as acausal (reaction before cause) or simply not define it. Index as qualitative tag only. |