Exploring Human Eyes Conversion of Visible Light Into Neural Activity Essay

Exploring humanity Eyes Conversion of Visible Light Into Neural Activity and Conveying of optical Information into Visual Cortex - Essay ExampleLight rays first come in contact with cornea which helps in maintaining the earlier chamber of the sum. The exonerated rays travel via small hole known as a pupil , it contains flagstone muscles in its surrounding which later pass on to the lens, it aids in converging the beam of frolicsome to focus the object depending on the distance. (SK277 Course Team, 2004, p.63) This phenomenon is also known as accommodation reflex. Human eye comprises of two chambers namely the anterior chamber and posterior chamber. ... The diameter of the aperture is enhanced by the performance of radial muscle, whereas as the diameter is decreased when circular muscles act. The image is finally produced on the retina which is made up of several distinct layers, it also possesses receptors for escaped known as photoreceptors. (SK277 Course Team, 2004, p.63) B efore the formation of the image, the light has to pass through the several layers and receptors present in the retina. These photoreceptors can be categorized as rods and cones. both rods and cons have a distinct function. Data gathered from the rods play a vital use in night vision.These receptors are highly sensitive to the low level of light and are unable to extend to the details of the object at night. Due to this fact, we can see objects more clearly during daytime as compared to the night. Whereas, cons are responsible for viewing the object during the daytime. The photopigment that is present within rods and cons are capable of absorbing light in them. These pigments are 125 million in numbers and are made up of a protein known as opsin they also carry a chemical named as retinene (SK277 Course Team, 2004, p.64) The role of this photoreceptor is to convert the energy generated from the light into biochemical signals via electrical activity which in the end reaches retinal ganglion cells. These cells put on the information to the brain for final treat. Now axons present in retinal ganglion cells leads to the production of the optic human face and optic chiasm, it has overlapping fibers forming optic tract, they end up as a lateral geniculate kernel in the area of the thalamus. (SK277 Course Team, 2004, p.68) Later, the signals are transferred to the primary visual cortex and secondary visual area. The processing of visual