TaK - Perception

1. Sense perception and knowledge Our senses connect us with the world around us “Everyone takes the limits of their own field of vision for the limits of the world” Schopenhauer TaK - Perception

2. for a minute - be still …… • What can you feel? • for another minute - be still …… • What can you hear? • for a final minute - be still …… • What can you smell? TaK - Perception

3. TaK - Perception Cosmic Rays UV Light Radar X Rays Infra Red TV & Radio 10 22 10 20 10 18 10 16 10 14 10 12 10 10 10 8 10 6 10 4 10 2 10 0 Frequency (Hz) Visual Window Our senses are limited: Light Waves

4. Highest Voice Lowest Voice TaK - Perception 10 22 10 20 10 18 10 16 10 14 10 12 10 10 10 8 10 6 10 4 10 2 10 0 Frequency (Hz) Audio Window Our senses are limited: Sound Waves

5. Bloodhound: • “A nose with a dog attached” • 230 million olfactory cells compared to 5 million in humans • 1000 times better sense of smell than humans • Have been known to be able to track a scent for over 100 miles TaK - Perception Our senses are limited: Smell

6. TaK - Perception • What is in the mind and • what is in the world? • e.g. Think about physical sensation (Touch)…. • You plunge your hand into a bucket of ice cold water – for a moment you aren’t sure if it is hot or cold … • You plunge your hand into a bucket of hot water – is the pain in your hand, or in your mind?

7. Sensation – which is provided by the world • Interpretation – which is provided by the mind • (external stimuli + mental processes) TaK - Perception

8. TaK - Perception Interpretation: Understanding what we see - Coherence

9. TaK - Perception In our everyday life, we are not usually aware of our minds interpreting the sensations that flood into our senses ....

10. TaK - Perception • You are walking down a dark alley ... • footsteps behind you … • Imagination, Context, • Expectation and Sense Perception • affect the way we interpret sense data

11. TaK - Perception Interpretation – finding meaning in what we see

12. TaK - Perception Interpretation

13. TaK - Perception Visual Grouping

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17. The mental construction of reality TaK - Perception

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21. TaK - Perception Sensory Perception is selective: What the eye saw….

22. TaK - Perception Sensory Perception is selective: What the camera saw….

23. TaK - Perception Awareness test Person Swap

24. TaK - Perception “It’s not what you look at that matters, it’s what you see.”H.D. Thoreau

25. TaK - Perception • Look at the following and describe how they might be seen through the eyes of the following people: • A child dying in poverty as seen by a doctor, an economist, a social worker, the child’s father • A sunset as seen by a religious figure, a physicist, a painter, a farmer • A tree as seen by a biologist, a logger, an environmentalist, a carpenter

26. Sense Perception is an important source of knowledge but there are reasons for treating it with caution: • We may misinterpret what we perceive • We may fail to notice something • We may misremember what we have perceived • Sensory perception is selective • Our senses have limitations • Experience creates expectations • Subjective factors – interests, moods – affect sensory perception ToK - Perception