It's a multi-step process.
1. Light enters the eye through the pupil and is focused by the lens onto the retina.
2. Photoreceptors in the retina transduce (transform) the light into local electrical impulses.
3. Ganglion cells in the retina send impulses (action potentials) through the optical nerve to the Thalamus, as well as the superior colliculus and the nucleus suprachiasmaticus.
4. The nucleus suprachiasmaticus adjusts sleep/wake cycles, the superior colliculus is involved in eye movements, but most of the visual information is relayed by the Thalamus to the visual cortex in the back of the brain/head.
5. Primary visual cortex in the back of the head does a categorical analysis of the visual stimulus, mostly looking for oriented edges, passing the information along to areas in the front of the brain.
6. Areas front of the primary visual cortex do a specialized analysis of the image, such as MT for motion or V4 for color.
In a nutshell.
2006-07-24 20:51:35
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answer #1
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answered by Ejsenstejn 2
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The Light is one aspect of Holy Spirit. The Light and Sound purify, uplift, and direct us on our journey home to God.
I invite you to try this simple exercise. First get comfortable, close your eyes and take a few deep breaths. Next, gently put your attention on your inner visual screen, where daydreams and images come to you.
With your eyes closed, sing HU (pronounced like the word hue) as a song of love. There are many ways to experience the love of God. You may notice a feeling of peace, warmth, and comfort. You may also recognize the presence of the Divine through greater spiritual insights into your daily life. When you sing HU and sit in quiet contemplation, you might also perceive the inner Light and Sound. The Light may appear as brightness or colors on your inner visual screen. The Sound may be musical or the sounds of nature, such as the wind or the ocean. However you experience the presence of God, it is bringing you a broader understanding of the life you lead.
Please feel free to contact me if you'd like to know more.
2006-07-24 06:19:19
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answer #2
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answered by shine_radiantstar 4
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Light doesn't actually get transmitted into the brain. It gets transmitted into the eyes and registered by the sensors on the retina which, in turn, send an electrical signal to the brain.
2006-07-24 05:42:44
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answer #3
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answered by Anonymous
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Eye and the light hits the optic nerve
2006-07-24 06:04:20
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answer #4
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answered by Lake Lover 6
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eyes
2006-07-24 05:41:14
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answer #5
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answered by Zippy 7
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