213878
Description
Mind Map by charliestar04, updated more than 1 year ago
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Created by charliestar04
over 10 years ago
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Visual system structure
- Lens.
- Accommodation inefficient = poor focus
- Accommodation inefficient = poor focus
- Retina
- Rods & cones sense light & colour
- Cones migrate to forvea in early months, improving
perception of colour & detail
- Cones migrate to forvea in early months, improving
perception of colour & detail
- Rods & cones sense light & colour
- Optic nerves
- Formed but not myelinated til 3 mth.
- Transmission of info slow
- O.N. terminate in lateral geniculate nucleus
- O.N. terminate in lateral geniculate nucleus
- Transmission of info slow
- Formed but not myelinated til 3 mth.
- Lateral geniculate nucleus
- Complex structure at base of brain
- Retinal image mapped into LGN, enhances detail
- Mature by 12 mth
- Mature by 12 mth
- Retinal image mapped into LGN, enhances detail
- Complex structure at base of brain
- Visual cortex
- Different cells respond to different features
- Light, dark, lines, size, colour & movement
- Light, dark, lines, size, colour & movement
- Different cells respond to different features
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