5 Major Eye Movements

Everybody has probably ever experienced it: you are focusing on one thing and then miss something else completely that is happening at the exact same spot as you were focusing on. The term for this observation is inattentional blindness (IB), which means that you are being blind to something that you are not paying attention to (Mack & Rock, 1998). To study this phenomenon, a person should be given an attention-demanding task and during this task an unexpected stimulus should show up. If this person confirms he or she has not seen the stimulus, IB has occurred (Mack & Rock, 1998). For example, a classic and well-known study about IB showed participants a movie of people playing basketball and asked the participants to count the amount of passes

Have you ever wondered how visual disparity can effect Basketball? I have often wondered about how Visual Disparity can effect Basketball. I am a basketball player and I would like to be able to go to college to play Basketball someday. I still want to learn how to be a better basketball player than I am right now. I believe that learning more about Visual Disparity may help to explain how basketball players can improve their shot.

The ability to divide our attention during cognitively demanding tasks and the allure of technology creates a delicate balancing act that can at times have grave consequences. On September 22, 2006 in Utah, Reggie Shaw placed the fates of James Furfaro and Keith O’Dell, as well as his own upon this deadly scale. Tragically, the lives of James and Keith were lost, and Reggie Shaw’s future would be forever altered by the events and decisions of that day (Richtel 16). In this modern age of technological marvels our attention is vied for in a constant conflict. Frequently in our lives or particularly in our jobs we are called upon to execute mentally demanding and at times dangerous tasks. Notwithstanding, as the marvels of the technological world call to us, as a siren calls to

When it comes to perception of the world, every individual’s view of the world is highly subjective. In this essay, I will explore the theories of sensory adaptation, inattentional blindness and perceptual constancies, and how they collectively vary the perception of outside stimuli from one individual to another.

How did writing first develop? What was its function? Who invented it? Writing first developed as tokens, which were merely clay pieces about the size of a quarter. The tokens represented an accounting system and were used to record items purchased or sold such as goats, sheep or even bottles of wine. It is unclear whether writing was invented by the Sumerians or the Egyptians. However, what is not disputed is the Sumerians created one of the first and most distinguished forms of writing.

I administered the Horizontal Gaze Nystagmus test. Garcia Martinez exhibited a lack of smooth pursuit in both eyes. Garcia-Martinez exhibited a distinct and sustained nystagmus at maximum deviation in both eyes. Garcia-Martinez exhibited an onset of nystagmus prior to 45 degrees in both

A Nystagmus is an involuntary jerking of the eyes. The Horizontal Gaze Nystagmus (HGN) is an FST used to see if alcohol or another drug has caused your eyes to jerk. Since the HGN response is completely involuntary (you can't control your body's response) this test is considered the most reliable of the field sobriety tests. When used together with other tests it is said to be 88 percent effective in determining whether a person has over a .08 BAC.

The photoreceptors detect the light. The muscles of our body cause our eyes to move so that certain images are not in our retina’s view; the shape of the lens then changes. Synapses and bipolar cells are channels in which photoreceptors communicate, which then communicate through synapses with ganglion cells. Amacrine cells and horizontal cells assist in combining the photoreceptors’ messages. The retinal molecule will detach from the opsin molecule when light strikes. When this occurs, the membrane becomes hyperpolarized. The rate of firing changes and the light is then detected.

Ten pairs of cranial nerves originate in the brain stem continuing to different areas of the face and body. Two pairs of cranial nerves originate in the cerebrum. Cranial nerves travel through specialized holes (foramina) in the skull originated for this purpose. The Abducens nerve offers the precise control needed for specialized movements such as the blink of an eye to a smile resulting from a scant upturning of a lip made possible by the Facial nerve. Damage to any of these 12 specialized nerves can result from trauma, tumors, malformations and disease. Cranial nerves possess either afferent or efferent nerve fibers or both. Afferent neurons convey information to the sensory stimulus in the brain while efferent neurons convey information to muscle

In cases that involve people who have been blind for several years and are offered the opportunity to regain their vision: there adjustment to seeing is quite difficult. For a man who has been blind for almost his entire life his reality was formed based a sounds and tastes from his surrounding environment. His mind was formed to the belief that everything was just darkness and his body adjusted to his surroundings. When one loses the senses the others senses seem to be enhanced and able to function faster and more efficient. So when the body has been injured and therefore left a man’s vision impaired. The mind changed and somewhat evolved to create a better chance for his survival in the world. Scientists see this in animals as well. Many animals like bats, whales, and the mole all have different senses that their minds have evolved for them in order to better their chance in survival. The mind is a tool is just another organ in the body that’s only purpose is to greater increase the survival of the

For thousands of years, people have puzzled over the question “What gives something its identity?” There are several different lines of philosophical thinking that seek to answer this question. Some people believe that an item’s identity is derived from its material composition. Others support a more objective viewpoint that it is others’ memories of something that gives it its identity, or one’s own personal memories. In The Diving Bell and the Butterfly, Jean-Dominique Bauby experiences a situation which could lead someone to question his identity. After suffering a massive stroke and being left in a condition where he is “locked in” his own body, the only way he has to communicate with the outside world is through slight eye movements.

What do you usually hear when people talk about pulling focus? They mention that it’s both an art and a science. When we talk about the art part, it’s the “touch” one puts into pulling focus. Also, it’s got to do with how fast you do it, and how long it lasts.

Purpose: The purpose of this research project is to evaluate the effect of shifting the visual field and examining its influence on the visual-motor adaption pathways that are essential to everyday life.

The peripheral retina does not provide us with very sharp visual acuity, instead it is responsible for our awareness of objects around us, and helps us adjust to changing levels of light within the environment.