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Sensation and Perception II Perception of Time

Sensation and Perception II Perception of Time. FUNCTIONS telling you duration processes that need time mathematical integration (m/s/s -> m/s) motion (m/s) use of motion (time to contact) telling you when to go to bed synchronizing mating (to annual cycle) . circadian rythmns

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Sensation and Perception II Perception of Time

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  1. Sensation and Perception II Perception of Time

  2. FUNCTIONS telling you duration processes that need time mathematical integration (m/s/s -> m/s) motion (m/s) use of motion (time to contact) telling you when to go to bed synchronizing mating (to annual cycle)

  3. circadian rythmns light suprachiasmatic nucleus pineal melatonin biological clock temperature (hot makes it faster) drugs amphetamine --> slower pentobarbitol --> faster

  4. Suprachiasmatic nucleus lesions abolish free-running rythms activity related to circadian rythms isolated suprachiasmatic nucleus still cycles

  5. 70 65 60 94 95 96 divers right answer time seems slow sick wife time seems fast cold hot

  6. time OVERESTIMATED eg. when sick, or when something horrid is happening actual time (eg. 40s) perceived time (eg. 60s) time UNDERESTIMATED eg. when cold or when distracted actual time (eg. 100s)

  7. time OVERESTIMATED clock ticks faster actual time (eg. 40s) perceived time (eg. 60s)

  8. perceived time (eg. 60s) time UNDERESTIMATED clock ticks slower actual time (eg. 100s)

  9. INFORMATION-STORAGE SIZE THEORY more information, takes longer ATTENTION THEORY attention-use temporal properties more attention-demanding, less you notice time...

  10. Evidence for INFORMATION-STORAGE SIZE more elements -- seems longer complexity -- seems longer ambiguous -- longer than disambiguated uncompleted more "memorable" and longer

  11. INFORMATION STORAGE THEORY time OVERESTIMATED -- more elements actual time (eg. 40s) perceived time (eg. 60s) time UNDERESTIMATED -- less elements actual time (eg. 100s)

  12. "When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute and it's longer than any hour. That's relativity!" Albert Einstein Journal of Exothermic Science and Technology (JEST, Vol. 1, No. 9; 1938).

  13. clock ticks faster clock ticks slower (project with Jonathan Shulman)

  14. clock ticks faster clock ticks slower

  15. Evidence for ATTENTION theory concentrating -- faster than not concentrating "the watched pot never boils" clock ticks faster clock ticks slower concentrating not concentrating

  16. ATTENTION THEORY time OVERESTIMATED -- not concentrating actual time (eg. 40s) perceived time (eg. 60s) time UNDERESTIMATED -- concentrating actual time (eg. 100s)

  17. Aging • time goes faster •  time/lifespan (Weber's law) • clock slowing down? • dopamine depletion?

  18. Space and Time affect each other 1 seemed longer overestimation right answer seemed faster underestimation

  19. time OVERESTIMATED -- small screen -- clocks ticks faster actual time (eg. 40s) perceived time (eg. 60s) time UNDERESTIMATED -- big screen -- clock ticks slower actual time (eg. 100s)

  20. -- All of these represent the same speed (m/s) -- bigger distance -- faster time! compression of space = compression of time!

  21. Space and Time affect each other 2 Tau effect (effect of time on distance) if it takes longer time between A and B then it seems longer distance

  22. Space and Time affect each other 3 Kappa effect (effect of distance on time) If distance bigger, time between flashes seems longer.

  23. TAU effect (time affects distance) which distance is longer: A

  24. Or: B

  25. KAPPA EFFECT Which interval seems longer: A

  26. Or: B

  27. Summary of Time Perception Functions: integration/motion/circadian rythms/mating Biology: light/suprachiasmatic nucleus/pineal/melatonin Biological clock: temperature/drugs Theories: information storage/attention Effects of aging Space/Time interactions: Tau and Kappa effects

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