Photoreceptor cell

Leah Meltser PHBM 207.01 Assignment 1: Comparing Visual Systems 2/12/17 Visual Systems: Bats Versus Humans One has probably heard the simile, “you must be blind as a bat!” Well in fact, this statement is false, bats are not blind. Formally known in the mammal family as Chiroptera, bats can be split into two sub orders known as mega-bats (flying foxes or fruit bats) and micro-bats. Typically, when bats are thought of it is commonly known to have the characteristics of having echolocation, or

Here is a head shot with basic three point (triangle) lighting. Triangle lightning “refers to the triangular arrangement of key, back, and fill lights, with the back light opposite the camera and to the front of the side of the objects” (Zettl, 37). In this photo, there is an overhang light directly behind the subject, acting like the kicker or back light; there are also two iPhone flash lights on either side of the subject acting as the key and fill lights. Although this lighting is not idea or

Red, Orange, Yellow, Green, Blue, Indigo, Violet. The Colors of the rainbow, color shapes how we see our world. Color has been around before dinosaurs, and before that, and what ever was before that, so whenever that was color was there. There will always be an infinite amount of color because blending colors makes new colors and blending those colors makes, you get the point. But are we really seeing theses colors? Is our brains just misleading us? Those questions will be answered through this

I created a poster to show how the sculpture, “Sequence” represents the College of Design. To show this, I decided to make the poster about the College of Design at Iowa State University. The audience of this poster is the students because they are the people that would be applying to be a design student. To catch the attention of students, I thought a poster would work better so when they walk by throughout a busy day they will notice it. I also wanted the poster to be landscape or more horizontal

The Greek Storage Jar (Amphora) depicting man and boy was created around 550-540 BCE. It was found in Ancient Greece. The amphora storage jar is made out of terracotta and it is eleven inches in height. Then it was painted on with black and brown paint. This jars colors are used to create contrast, the lines are used to unify it, the shapes on the object are the most important part of the image and patterns are used on the jar to help fill the space on the jar. Therefore colors are used to create

Objective : To provide education, awareness, medical information and medical knowledge on low vision assessment in Retinitis Pigmentosa. Introduction : Retinitis Pigmentosa is a group of inherited diseases that damage the light-sensitive rods and cones located in the retina, the back part of our eyes. Rods, which provide side and night vision are affected more than the cones that provide color and clear central vision. The prevalence of Retinitis Pigmentosa worldwide is approximately one in 4000

2013). The SCN generates circadian rhythms itself based on genetics. If neurons in the SCN are detached from the rest of the brain, they still generate a rhythm. (Earnest, Liang, Ratcliff, & Cassone, 1999). Though SCN cells can sustain a rhythm on their own, interation between SCN cells and other parts of the brain aid in producing a rhythm in sync with one’s daily life (Long, Jutras, Connors, & Burwel, 2005). In studying hamsters’ circadian rhythms it was found that a mutation causes hamsters’ SCN

The component that responsible in this color diversity is iris, on which the center of it is a hole call pupil act as an opening. Unlike pupil, iris muscle can contract its muscle to control amount of light enter human eye through pupil in certain conditions. Iris can be colorful due to amount of pigments its contain eumelanin (brown/black) and pheomelanin (red/yellow). These color pigments are produced by melanocytes. (Kolb H & R, 2005). Darker colored eyes usually have more eumelanin than pheomelanin

Biological Processing System: Understanding Color and Contrast Introduction While interacting with the world, human visual system is perhaps the first and foremost biological process system that directly involves in detecting information. As Colin Ware (2013) noted in Information Visualization, “We acquire more information through vision than through all of the other senses combined”. Hence, it is crucial for information designers to understand influential factors which affect our visual system

that contract or constrict to increase or decrease the diameter of the pupil respectively. The retina is the inner most layer of the eye. It the main site of photoreceptors that convert light energy into electrical energy where the information gets sent to the brain and is what we perceive as vision. (Marieb, 2014) Two types of photoreceptors can be found in the retina, the rods and cones. Rods are mainly responsible for scoptic vision thus mostly reactive in dim lighting. Cones are responsible for