Oliver Slack: Unilateral Neglect

The purpose of this paper is to evaluate the correlational method as a means for examining the relationship between functions of the left and right hemispheres. I will compare the performance of people with intact brains with the performance of so-called split-brain patients. In many ways, the brains of these two groups are very similar. 1a. The brain stem is found in the deepest part of the brain. The brainstem controls the automatic survival functions of the body, such as breathing. There are no differences between the function of the normal brainstem and the brain of a split brain patient. The brainstem will still supply the automatic survival functions of the body. 1b. The hippocampus is found in the limbic system along with the amygdala, the hypothalamus. The hippocampus is in charge of allowing the body to process information into memories. Without the hippocampus, there is no way for new memories to be created. There is no anatomical difference between the hippocampus in the normal brain and a split brain. 1c. The corpus callosum is found in the center of the brain. The role it plays as a part of the brain is it connects both the left and right hemispheres of the brain, allowing them to work and interact together as a whole system. The difference between the anatomy of the corpus callosum in a split brain patient versus someone without a

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

The connectionist model describes the different areas of the brain and how they process particular types of information (Brookshire & McNeil, 2015). We have a greater understanding of left hemispheric damage. For example, if an individual has damage to their posterior-inferior third frontal gyrus of the left hemisphere, they will present with Broca’s aphasia, which evidences as motor planning deficits. While scientists and researchers have a general understanding of what the right hemisphere is responsible for, we have yet to understand specific areas precise responsibilities. Generally, we recognize the right hemisphere is responsible for behavior and cognition, perception, recognition and expression, attention, and pragmatic communication (Brookshire &

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

The Direct-route pathway course inquiries, and the Inverse-route pathway course examinations utilize the use of a vocal policy or the modest recollection of the preceding practice are no longer successful. The Giusberti, et al, (2010) study has adopted a viewpoint that has never been practiced before, and they are required to represent the psychological atmosphere. It recommends that the frequency of images hemineglect disturbs the capability to steer when the subject has to use a mental diagram of the situation (Giusberti, et al, 2010). It is still being discussed whether the discrepancy detected in subjects is owed to struggles in constructing a psychological chart, recollecting it from recollection, or utilizing it throughout direction finding (Giusberti, et al, 2010). Appraising hemispheric engrossment in graphic psychological imaginings, and the findings showed that right and left intellectually impaired subjects with no sign of representative hemineglect completed faultlessly in the visualizations tasks (Giusberti, et al, 2010). Useful neuroimaging experiments recorded that both hemispheres are complicated in psychological imaginings treatment (Giusberti, et al,

The results of this study show us the brain is not in fact symmetrical and the two hemispheres in the brain work in different ways. The left hemisphere is known to play the dominant role, which is in control of all complex behavioural and cognitive processes as for the right hemisphere it only plays a minor role. This report will further analyse how different the two hemisphers is the dominant side of the brain.

Hemineglect also known as unilateral spatial neglect, hemispatial neglect, hemi-inattention, hemisensory, parietal neglect or spatial neglect (Kerkhoff, 2000), is a condition in which patients are unable to attend and respond to the contralesional side of space (Dijkerman, Webling, ter Wal, Groet, & van Zandvoort, 2003). Hemineglect is characterized by the lack of spatial awareness, most commonly on the left hemispace (Parton & Malhotra & Husain, 2004). The most common form of hemineglect, is that of patients who have right hemisphere lesions commonly found to damage the ‘where’ pathway, most commonly after a stroke. These kinds of patients tend to neglect the left hand side of space (Driver & Mattingley, 1998). Although it is not

The other test held was an auditory test. The test was done in two different ways. One way was finding the objects in a bag that were mentioned verbally and the other was identifying the item reached by touch. This test’s results were also supporting the previous researchers’ logical conclusion about the left hemisphere ability of speech. It confirmed the right hemisphere’s ability of comprehending language and its ability of expressing it in a nonverbal way. During the test, evidently, the right hemisphere had no trouble identifying the unknown objects by touch as the left hemisphere did. Moreover, some three- dimensional drawings of the slit-brain patients, who were all right handed, developed much better drawings using their left hands compared with their right hands.

Research have shown that Canada’s ageing population is growing at a rapid pace. Many of today’s seniors experience cognitive decline as well as senile dementia which is considered to be a normal part of the ageing process (Public Health Agency of Canada,2014). In this particular case study, the neurologic system assessment is a priority. The nervous system is vital, even though the utmost complex system of the human body which comprises the central and peripheral nervous system.

With the same method, Patients with Other neurologic disorders have been diagnosed based on the results of prior history, physical examination and Brain MRI. All healthy control group members also underwent a thorough investigation to confirm that they are healthy. All participants were matched in regard of socioeconomic status, gender and age.

When a word or picture falls to the left of the point, the information goes to his disconnected right half brain. Joe is unable to name it but he can draw the picture with his left hand which gets its major control from the right half brain. Even though he can’t name it his left hand can draw the picture of the picture or word presented to his right half brain. In patients like Joe with split-brain syndrome the right hemisphere, acts independently of the left hemisphere and the person’s ability to make rational decisions. This can results in split consciousness whereby the left hemisphere give orders that reflect the person’s rational goals whereas the right hemisphere issues conflicting demands that reveal hidden behaviours

They each perform separate functions. In typically right handed individuals attention to stimuli regarding language production produced brain activity in the left hemisphere while attention to stimuli regarding visuospatial memory is shown in the right hemisphere of the brain (Nielsen, Zielinski, Ferguson, Lainhart, & Anderson 2013). Researchers discovered this by monitoring the brain activity of children while given multiple tasks to perform. When tasks such as telling a story and word-picture matching, brain activity in the areas of the left hemisphere are shown through the fMRI (functional magnetic resonance imaging), and when given tasks such as bilateral finger tapping and image discrimination tasks areas in the right hemisphere were shown (Holland et al., 2007). Through tests like the fMRI, we can recognize how the brain normally functions and acknowledge when brain activity is abnormal which usually results in asymmetrical lateralization. Detection of different activities in both sides of the hemispheres proves that lateralization exists in the cerebral

Clinical manifestations and alterations of neurologic function for adults, elder adults and children (two of each).

However, physical changes in appearance are not the only symptoms of this disease. As the body ages, the patients also become more susceptible to illnesses and diseases. In the case of a WS patient, they experience this exact same situation, but just 50 years in advance. This means that while they are aging externally, they are also prone to developing other diseases that usually come with old age. For example, patients have 91% chance of developing osteoporosis, 80% for hypogonadism, 71% for diabetes mellitus, and 40% for atherosclerosis. Although cataracts and osteoporosis are the most common effects of WS, these are very treatable. Thus, diabetes mellitus is seen as the most serious symptom of WS. Treatments for the mentioned conditions include surgery for cataracts, and frequent monitoring for tumors and heart diseases. In addition, patients can establish a healthy lifestyle that includes smoking avoidance, regular exercise, and weight control to reduce the risk of atherosclerosis (Muftuoglu et al., 2008). Although this disease can affect one’s overall physical and internal ealth, research has shown that it does not affect their intelligence

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.