The Nature of Perception

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Presentation transcript:

The Nature of Perception Do we see the world the way it “really” is? Eidolon Theory (Democratus) Ray Gun Theory (Euclid) Naïve Realism Why the Theory of Naïve Realism is Flawed

Eidolon Theory: Democratus

Ray-Gun Theory: Euclid

The Theory of Naïve Realism We see the world the way we see it - because that’s the way it “really” is

Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently Different species see the world differently

Electromagnetic Spectrum Light at different wavelengths is experienced as different colours

Albert Einstein as seen by a bee

A Bee as seen by a bee

Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently Different species see the world differently Different humans see the world differently -Vision deficiencies

How the world looks to a person with a blue/yellow color deficit (tritanopia). How the world looks to a person with a red/green color deficit (deuteranopia). The world.

Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently Different species see the world differently Different humans see the world differently -Vision deficiencies -Brain Damage

. Prosopagnosia

Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently 2. The same person can see the world differently

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Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently 2. The same person can see the world differently 3. Experience affects perception

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Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently 2. The same person can see the world differently 3. Experience affects perception Trichromatic Theory of Vision - Helmholtz

Green Red Blue % Of Response . Wavelength

Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently 2. The same person can see the world differently 3. Experience affects perception Trichromatic Theory of Vision - Helmholtz Opponent Process Theory of Vision - Herring

Opponent Process Theory of Vision . Opponent Process Theory of Vision

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Why the Theory of Naïve Realism is Flawed 1. Different individuals see the world differently 2. The same person can see the world differently 3. Experience affects perception 4. Sometimes we see the world in a way it cannot be.

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Perception depends on the interaction between stimuli from the world and our sensory systems