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Sight (vision)

7 videos
6A: Red, orange, yellow, green, blue. These words would have no meaning to you were it not for your properly functioning visual sensation. You are able to read this webpage because there are multitudinous synapses between the neurons in your eye, which detect light, and the neurons in the occipital lobe of your brain, which process this same image. We will break down how our eyes and brain are able to process the splendid world around us as photons bombard us from all around.

The structure of the eye

VIDEO 10:28 minutes
In this video, I review the structure of the eye. By Ronald Sahyouni.

Visual sensory information

VIDEO 8:02 minutes
In this video, I explore our sense of vision. By Ronald Sahyouni.

The phototransduction cascade

VIDEO 9:56 minutes
This explains phototransduction cascade which is critical to our sense of vision. By Ronald Sahyouni.

Photoreceptors (rods vs cones)

VIDEO 5:06 minutes
In this video, I explore the similarities and differences between rods and cones. By Ronald Sahyouni.

Photoreceptor distribution in the fovea

VIDEO 5:43 minutes
In this video, I explore how photoreceptors (rods and cones) are distributed in the fovea. By Ronald Sahyouni.

Visual field processing

VIDEO 4:10 minutes
In this video, I review how we process our visual field, and how information from the right and left visual field is broken down and sent to the brain. By Ronald Sahyouni.

Feature detection and parallel processing

VIDEO 7:09 minutes
In this video, I review our ability to break down an image into its component "features" such as color, form, and motion. This is known as feature detection, and since the detection of various features happens simultaneously, or in ...