week_5_vison_1_3_slides - HD 220 2006 1 Temple, 2006 1 How...

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Unformatted text preview: HD 220 2006 1 Temple, 2006 1 How Do We See? – I Anatomy of the Visual System Week 5 Temple, 2006 2 Anatomy of the Visual System • Visual System – The stimulus: Light – The organ: The eye – The receptor: Photoreceptors • Clinical disorder: Color blindness – Retina neurons – The pathway: Retina to brain – In the brain: Visual cortex • What / Where pathways Temple, 2006 3 The Stimulus: Light • Light – Electromagnetic energy – Travels in a wave • Different wave lengths – Different types of energy – What we can see is what we have receptors for HD 220 2006 2 Temple, 2006 4 The Organ: Eye Temple, 2006 5 Vision Problems Near sighted Eyeball is too long Focal point falls short of retina so image is blurred Far sighted Eyeball is too short Focal point falls beyond retina and feels too close Temple, 2006 6 Retina • Located at back of eye • Contains receptors – Transform light into neural response HD 220 2006 3 Temple, 2006 7 Foveal Retina Temple, 2006 8 Anatomy of the Visual System • Visual System – The stimulus: Light – The organ: The eye – The receptor: Photoreceptors • Clinical disorder: Color blindness – Retina neurons – The pathway: Retina to brain – In the brain: Visual cortex • What / Where pathways Temple, 2006 9 The Receptor: Photoreceptors HD 220 2006 4 Temple, 2006 10 Photoreceptors • Rods – Do not respond to color...
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This note was uploaded on 09/28/2008 for the course HD 220 taught by Professor Anon during the Fall '06 term at Cornell University (Engineering School).

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week_5_vison_1_3_slides - HD 220 2006 1 Temple, 2006 1 How...

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