Hemispheric Dominance And Handedness Essay

It is still not fully understood whether or not the action of certain tasks is actually dependant on both of the brain hemispheres, because they both appear to have control over some tasks. An example of this, is the left hemisphere which is said to be responsible for the analytic part of the tasks, such as reading and making calculations. Within many individuals, it is also the dominant centre of language

According to the theory of lateralisation developed by Robert Sperry and Robert Ornstein, the cerebral cortex in the two hemispheres perform the same motor and sensory functions but each of the hemisphere is specialized for different tasks. As the brain develops, the left hemisphere is superior in doing tasks that involve speech, language, reading, and writing. The right hemisphere shows superiority in tasks that involves creativity, intuition, facial recognition, non-verbal imagery, musical recognition, sense of direction, play and sports, learning experience and risk-taking. Lateralisation is developed for the task that is done, that is the right hemisphere is used for a particular function. This decision is influenced by genetics, childhood learning experiences and

I have to start this paper off with a confession. I had hand surgery a couple of years ago and had to become a lefty for several months. The experiment would have been harder I know if I would have not gone through this experience. I am not a lefty but had to live as a lefty.so I can use my left hand to do more than the average right handed person. I have much appreciation for left handed people. The world is set up for right handed people. If you have to put in a light bulb you have to screw the light to the right. If you have to deal with anything mechanical you usually have to turn clockwise to insert and counter clockwise remove. I am a nurse and I had to learn to grasp really small objects such as

2013). Functional lateralization is found to form at an early age, and lateralized connections can be unique amongst individuals (Nielson et al. 2013). Change in lateralization with age is insignificant, defending that lateralization development occurs during the stages of early development (Nielson et al. 2013). Current studies have concluded that lateralization does not vary amongst genders, but instead individuals (Nielson et al. 2013). The question of left or right brain dominant has arisen after Sperry’s contributions. Research has concluded that left or right brain dominance does not exist as a whole, but instead varies amongst individuals (Nielson et al.

In class on 9/18, we discussed the structures of the brain and how each part works. The brain has so many parts that it is almost impossible to remember all the parts and their functions. The brain is very complex, but the most interesting thing that was talked about was the two different hemispheres. We discussed how the right hemisphere controls the left side of the body and vise versa I found it very interesting that the left side of the brain controls more of our logic and grammar, and the right side of the brain controls more emotional expressions. When Dr. Yarnell discussed her story of her friend and her friend’s husband getting in a fight I think the way she told her to help resolve it was very interesting. Her response was to move into her left side

Dove wrote an article about an experiment which tested whether people would still turn right even if something was blocking their way. Dove wrote that the experiment wasn’t effective and that people turned right anyway. The experiment was conducted in a store located in Philadelphia and according to Dove, “A store in the Philadelphia area tried to funnel shoppers to the left upon entering the establishment, but they fought the clockwise movement. Instead of turning left, shoppers careened around pallets and displays that blocked their path to the right” (Dove, 2017). Since about 90% of the human population is right handed, most of the people in that store were probably right handed, which would prove that people subconsciously turn the direction of their dominant

Pink’s argument that we are moving out of a left-brain dominance and in to a new era where right brain qualities will be prized is well illustrated in part one the book. According to Pink “the two hemispheres of our brain don’t operate as on-off switches…both halves play a role in nearly everything we do” (2011). Pink suggests that both hemisphere of the brain are equally important. In fact, “a healthy,

Specifically, right-sided hemiparesis involves injury to the left side of the brain, which controls language and speaking (aphasia). People who have this type of hemiparesis may also have troubles in understanding what people say and/or problems talking. In some cases, excluding left and right sides in the body. (Weiss T.C.; 2010)

Mead & Hampson (1996) developed a study involving the divided visual field paradigm and a phonological rhyme/non-rhyme task to test the speed and accurateness of either side of the brain. This study was used to investigate functional asymmetry between the left and right hemispheres in phonological processing. The research was taken out equally on 15 male and 15 females London Metropolitan University students ranging from ages 18 – 35 years old. They were all specifically chosen to be right–handed and had English as their first language thus providing a fair experiment to see whether our left hemisphere (left side of the brain) or the right hemisphere is faster and more accurate. In conclusion using the mean and standard

For many decades people have been considered to be either right or left side dominant in regards to brain function which came with defined roles such as “creative” or “analytical”. This thinking tends to be over-simplified as most people use their entire brains daily (Jensen, 2010). On the other hand people do use different parts of their brain for different tasks according to how they perceive those tasks.

Finally, it has been shown many of the affects towards emotion, cognition and behavior are highly dependent upon the hemispherical location of the lesions. Left-hemispherical lesions have a tendency to provoke slower decision times also with more mistakes, depression, anxiety, apathy and certain emotional deficits such as: emotional inhibition and controlling of emotions. Right-hemispherical lesions have a tendency to provoke neglect, hemianopia, anosognosia, anxiety and depression, as well as emotional response and arousal. Depression is the most common deficit affecting up to 40% of stroke patients. As for which hemispherical location has the most drastic effect, I don’t believe there really is a difference because both sides have their own affects and they all are difficult changes to be dealing with. “There were 294 subjects […] registered in 1995, of which 101 (34.3%) were dead by three months after stroke” (Patel, Mehool; Coshall, Catherine; Rudd, Anthony G; Wolfe, Charles D.A., 2003, p.158).

Cross hand-eye dominance has been proven to create problems for certain people that don’t prefer a certain side of their body and can even result in problems with language, and learning along with the increase in the prevalence of ADHD. In the brain of a person with cross dominance, information normally processed on both left and right sides of the brain is forced to travel back and forth between both hemispheres. Since the process of receiving the information takes longer than normal, often times it results in developmental delays and later on could develop into a learning disability. The cross dominance creates a type of confusion in the brain and results in the disorganization of information, similar to a filing cabinet. If it is alphabetized

Left-right brain dominance is about the fact that the distinct hemispheres influence thinking. The left hemisphere is associated with logical, analytical thinking and a linear approach to problem solving. The right hemisphere is associated with creative, intuitive and value-based thought process. It is important to note that everyone uses its both hemispheres, but to varying degrees. Four quadrants of the brain, related to different thinking style, have been identified:

Craig Stellpflug of Healing Pathways Medical Clinic conducted a paper about mixed hand-eye dominance and how it affects your emotions and your brain. In his paper he noted that mixed dominance is not subject to just your eyes and hands, it also includes ears and feet, in any combination. Someone could be same side dominant when it comes to their eyes and hands but they might

For thousands of years right handed people have made up about 9 out of 10 people. There are correlations between what hand you write with and language. People with who are right handed tend to use have language abilities in the left hemisphere of their brains. People who are left handed also have language abilities in left side of their brains some of them also have these abilities in the right side, or both sides at the same