For Planners And Management Scientists
No, I do not suggest that planners and management scientists pack up their bags of techniques and leave the field of management, or that they take up basket-weaving or meditation in their spare time. It seems to me that the left hemisphere is alive and well the analytic community is firmly established, and indispensable, at the operating and middle levels of most organizations. Its real problems occur at the policy level. Here analysis must co-exist withperhaps even take its lead fromintuition, a fact that many analysts and planners have been slow to accept. To my mind, organizational effectiveness does not lie in that narrow-minded concept called rationality it lies in a blend of clear-headed logic and powerful intuition. Let me illustrate this with two points.
- First, only under special circumstances should planners try to plan. When an organization is in a stable environment and has no use for a very creative strategythe telephone industry may be the best examplethen the development of formal, systematic strategic plans may be in order. But when the environment is unstable or the organization needs a creative strategy, then strategic planning may not be the best approach to strategy formulation, and planners have no business pushing the organization to use it.
What Are The Functions Of The Left Temporal Lobe
The four lobes of the brain are responsible for organizing and assimilating all that we perceive. The four lobes of the brain include the frontal lobe, the parietal lobe, the occipital lobe, and the temporal lobe. The temporal lobe is further divided into the right and left temporal lobes.
The primary function of this lobe of the brain is to control sight and sound processing. Its also responsible for language usage. The left temporal lobe is the reason were able to make sense of the words that we read and hear.
When To See A Doctor
Certain features of a headache should cause concern. Most of us have experienced a headache at least once in our lives. Headaches that begin after the age of 50 should prompt concern. Ruptured cerebral aneurysms are most common in women around the age of 50. A sudden onset maximal intensity headache in persons of this age requires a medical evaluation. Headaches that are changing in pattern or frequency or that are becoming steadily worse should be discussed with a doctor. Other concerning features include: headaches along with a red eye, headaches that accompany behavior or cognitive changes, headaches along with soreness in the temple area or jaw, and headaches that occur after trauma or a blow to the head.
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How Does The Nervous System Work
The basic workings of the nervous system depend a lot on tiny cells called neurons. The brain has billions of them, and they have many specialized jobs. For example, sensory neurons send information from the eyes, ears, nose, tongue, and skin to the brain. Motor neurons carry messages away from the brain to the rest of the body.
All neurons, however, relay information to each other through a complex electrochemical process, making connections that affect the way we think, learn, move, and behave.
Intelligence, learning, and memory. As we grow and learn, messages travel from one neuron to another over and over, creating connections, or pathways, in the brain. It’s why driving takes so much concentration when someone first learns it, but later is second nature: The pathway became established.
In young children, the brain is highly adaptable. In fact, when one part of a young child’s brain is injured, another part often can learn to take over some of the lost function. But as we age, the brain has to work harder to make new neural pathways, making it harder to master new tasks or change set behavior patterns. That’s why many scientists believe it’s important to keep challenging the brain to learn new things and make new connections it helps keeps the brain active over the course of a lifetime.
Smell. Olfactory cells in the mucous membranes lining each nostril react to chemicals we breathe in and send messages along specific nerves to the brain.
What If My Brain Injury Or Stroke Is On The Right Side Of My Brain
Injury to the right side of the brain may result in left sided weakness and the following cognitive and communication problems:
- Attention: Difficulty concentrating on a task or focusing on what is said or seen.
- Left neglect: Problems with attending to things on the left side
- Visual perception: Visual perception deficits including processing any information on the left visual field
- Reasoning and problem solving: Difficulty identifying that there is a problem and generating solutions
- Memory: Difficulty recalling previously learned information and learning new information.
- Social communication: Difficulty interpreting abstract language such as metaphors, making inferences, understanding jokes, and nonverbal cues.
- Organization: Difficulty with arranging information and planning, which is often reflected in communication difficulties, such as trouble telling a story with events in the right order, giving directions, or maintaining a topic during conversation.
- Insight: Difficulty recognizing problems and their impact on daily functioning.
- Orientation: Difficulty recalling the date, time, or place.
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Achieving A Healthy Brain
While there’s no evidence to prove that people who are right-handed are more creative and the left-handed ones have a better cognitive function, everybody can improve their brain functions if they have the will to do it.
Researchers found that specific thinking exercises can improve the brain cells in both hemispheres and promote a healthy brain. If you want to learn holistic thinking and become more creative, dabbling in colouring books, practising mindfulness and engaging in physical exercises will improve the performance of your cerebral cortex. On the other hand, solving puzzles, writing, solving math problems and reading a lot will enhance logical thinking and speech production.
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Originally published on Aug 31, 2008
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Left Brain Vs Right Brain
By Eagle Gamma, published May 18, 2021
The brain consists of twin halves, a left hemisphere alongside a nearly symmetrical right hemisphere.
Hemispheric lateralization is the idea that both hemispheres are functionally different and that certain mental processes andbehaviours are mainly controlled by one hemisphere rather than the other.
The left hemisphere controls the right hand side of the body and receives information from the right visual field controlling speech,language and recognition of words, letters and numbers.
The right hemisphere controls the left hand side of the body and receives information from the left visual field controlling creativity,context and recognition of faces, places and objects.
According to the left-brain, right-brain dominance theory the left-side of the brain is considered to be adept at tasks which are considered logical, rational, calculating.By contrast, the right side of the brain is best at artistic, creative, and spontaneous tasks
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Brain Lateralisation And Handedness
It is true, however, that the brains right hemisphere controls the left side of the body, and the left hemisphere the right side and that the hemispheres do actually have specialities. For example, language is usually processed a little bit more within the left hemisphere, and recognition of faces a little bit more within the right hemisphere. This idea that each hemisphere is specialised for some skills is known as brain lateralisation. However, the halves do not work in isolation, as a thick band of nerve fibres called the corpus callosum connects the two sides.
Interestingly, there are some known differences in these specialities between right-handers and left-handers. For example, it is often cited that around 95% of right-handers are left hemisphere dominant. This is not the same as the left brain claim above, it actually refers to the early finding that most right-handers depend more on the left hemisphere for speech and language. It was assumed that the opposite would be true for lefties. But this is not the case. In fact, 70% of left-handers also process language more in the left hemisphere. Why this number is lower, rather than reversed, is as yet unknown.
Disorders Of The Corpus Callosum
Some children are born without a corpus callosum. This leads to a rare disorder known as agenesis of the corpus callosum, which is estimated to affect around 1 in 3,000 people. The corpus callosum can also be damaged.
Disruptions to the development of the corpus callosum can occur between the 5th and 16th week of pregnancy.
While there is no certain cause, possible factors include:
- prenatal infections or viruses, such as rubella
- genetic abnormalities, such as Andermann or Aicardi syndromes
- toxic metabolic conditions, such as fetal alcohol syndrome
- something preventing the corpus callosum from growing, such as a cyst in the brain
Corpus callosum problems can also be due to a recessive genetic disorder. This means that parents can be carriers of the gene that causes the disorder, but not have the disorder themselves.
A child with two carrier parents has a 25 percent chance of having problems with the corpus callosum. Also, they have a 50 percent chance of becoming a carrier themselves. Both males and females are affected equally.
However, the increased use of scanning technology, such as magnetic resonance imaging , means that more children might receive a diagnosis in the future.
While its presence is not essential for survival, those who have problems with the corpus callosum will often fall behind their peers in development.
Children with agenesis may be blind, deaf, or never learn to walk or talk, while others can be very high-functioning.
What Does The Brain Do
Different parts of the brain receive and understand different messages from different parts of your body. The Brain is divided into two halves called Hemispheres. The Right Hemisphere works the left side of the body and the Left Hemisphere works the right side of the body. These two Hemispheres are joined together by a thick grouping of more than 200 million nerve fibres called the Corpus Callosum . These nerve fibres let messages pass from one side of the brain to the other.
Each Hemisphere of your brain has parts called Lobes. Each Lobe has different jobs that it does. The part of the Brain that makes our body parts move is called The Motor Cortex. It is found towards the back of the Frontal Lobe which is located at the front of your head. Different parts of the Motor Cortex of your Frontal Lobe move different parts of your body. Researchers have been able to map exactly which part of your brain moves each part of your body. They created a picture or a Motor Map of this which is called The Motor Cortex Homunculus to show us which part of our brain in the Motor Cortex is responsible for moving each part of our body.
Go to the ABIOS website Brain Map for more information about the what the Brain does.
The Brain And Language
Even though many language functions rely on an intact left hemisphere, as Broca and Wernicke noted, the right hemisphere certainly participates in verbal communication. The right side is much better at deciphering prosody and accentuation, while the left is the home of the grammar police and the dictionary.
For example, in both sets of patients, the physicians and their colleagues noticed that some aspects of speech were relatively preserved. Prosody, for examplethe music of speechseemed to be retained. In other words, their speech contained the appropriate ups and downs of conversation you could hear the emotional intent in the melody of their speech.
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But patients with right hemisphere damage can show deficits in prosody: They have trouble distinguishing and expressing modulations in speech. You might say that if there ever was an artistic side to language, surely it would be prosody. But many a great writer might take issue with that stance. So, what else does the right hemisphere do that the left does not and how do we know?
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Rehabilitation Methods For Left Hemisphere Stroke Patients
Now that you know about the side effects, what can be done to restore function?
Here are the best rehabilitation methods for recovery from stroke on the left side of the brain:
- Physical therapy. Performing exercises for stroke rehabilitation can help patients with hemiparesis or hemiplegia improve mobility on the affected right side. Patients can participate in physical therapy during inpatient and outpatient rehabilitation. Once patients go home, they can continue to exercise by using devices like Flint Rehabs FitMi, which motivates the high repetition necessary for results.
- Speech therapy. Working with a speech-language pathologist can help you overcome aphasia or other language-related side effects. When insurance stops covering speech therapy, you can use the CT Speech & Cognitive Therapy App, which was designed by SLPs to provide therapy from your mobile device.
- Cognitive therapy. Just like movement and speech, you can improve cognitive function by practicing cognitive therapy exercises for stroke patients.
- Vision therapy. If you sustained vision impairments, then you can work with an optometrist to get adaptive equipment like glasses. You can also try working with a vision restoration specialist to see if you can naturally improve your vision.
- Psychotherapy. The effects of a stroke can be devastating and often result in post-stroke depression. Participating in talk therapy can be helpful during this time of transformation.
How Is The Brain Supplied With Blood
The brain needs a steady flow of enough oxygen, glucose, and other nutrients. For that reason, it has a particularly good blood supply. Each side of the brain receives blood through three arteries:
- In the front, the anterior cerebral artery supplies the tissue behind the forehead and under the crown .
- The middle cerebral artery is important for the sides and areas that are further inside the brain. The anterior and middle cerebral artery split off from the internal carotid artery, a major blood vessel in the neck.
- The posterior cerebral artery supplies the back of the head, the lower part of the brain, and the cerebellum. It is supplied with blood from the vertebral arteries, which are also major arteries of the neck.
Before the three arteries reach their brain region, where they split into smaller branches, they are close together below the brain. In this area, they are connected to each other by smaller blood vessels forming a structure similar to a traffic circle. The arteries are connected to each other in other areas as well. The advantage of these connections is that blood supply problems in the brain can be compensated for to some extent: For example, if a branch of an artery gradually becomes narrower, blood can still flow to the part of the brain it supplies through these alternative routes .
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Box 1 The Genetics Of Handedness And Cerebral Asymmetry
Linkage analyses have often revealed candidate laterality genes, but all too often these fail in follow-up analysisa common problem in the search for genes related to human behavior. Part of the problem is the sheer immensity of the genome, which means that candidates are likely to surface by chance, and the problem is compounded by the likelihood of a strong chance element in the determination of handedness itself. With appropriate statistical control, several large-scale genome-wide studies have failed to reveal any single locus to be significantly associated with handedness ,, including one study based on a large sample of twins, which also failed specifically to support the single-gene model developed by McManus , or weaker versions of that model. The authors of one study estimate that as many as 40 different loci may be involved , but note that it would be difficult to distinguish multilocus models from a single-gene model, such as that of McManus, in terms of handedness pedigrees.
How The Left And Right Hemispheres Work Together
Both sides of the brain collaborate to handle major functions such as language processing and vision. But they are also, to a degree, specialized. Some areas of the brain are more active than others during particular tasks, and one hemisphere may be more involved than the other in specific parts of a larger mental operation.
For example, Brocas area and Wernickes area are both linked to language and are most commonly located on the left side of the brain. Yet the right hemisphere is also known to play a role in language processing. Meanwhile, the limbic systemwhich includes the amygdalae and hippocampi and is involved in functions such as emotion and memoryresides on both sides of the brain.
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How To Use This Information To Help Your Child
If a child has a strong left brain and a less mature right brain, he may experience social difficulties and have little interest in sports or outdoor activities. This imbalance in skills can be tough on kids and parents.
It was once thought that the brain was static, unable to grow or change. But extensive research has shown that the brain remarkably adaptable, able to create new neural pathways in response to stimulus in the environment. This is a branch of science called neuroplasticity.