Wednesday, September 29, 2010

Inside the Teenage Brain

     Our family, professional psychologists or scientists, and other people around us try to decipher what’s going on inside of our teenage brains. But the reality is that even we, the teenagers, don’t have a clue about it.



     Primarily, the perception our parents have about our strange behavior is that we "were invaded by another body”. When they stated this in the video, I thought this was a really humorous notion. Our parents were teenagers once, so I cannot comprehend why they have silly suggestions about our conduct! We are simply teenagers.




     Before trespassing into the dangerous world of adolescence, we have an overproduction of cells in the frontal lobe of the brain. By the age of 6, our brains are already 95% of its adult size.



     The brain is the central core of our emotions and actions. During our puberty years, the frontal lobe of the brain is developing, improving, and using its muscles by practice and experience. This is the only way to increment our brain capacity and avoid the death of cells.


     But how can we avoid brain damage? Deep sleep is the only way to rejuvenate our brain cells. You need at least 8 hours to rest your brain from all your angst. I believe sleeping early does not only depend on us, but it includes other factors as well. To sleep early would mean sacrificing certain things. In my experience, when I sleep late one night and then sleep a little earlier the next night, I suffer of more fatigue because I haven’t fully recovered. My brain is constantly analyzing everything, and therefore, that explains my stress problems.



     On the other hand, an amusing part of being a teen is that we are brave enough to take hazardous risks, even though if we are more susceptible in this point of life.
















Works Cited of Images



http://dadintheheadlights.files.wordpress.com/2009/04/zits.gif?w=525&h=255



http://www.coverbrowser.com/image/bestselling-comics-2007/310-1.jpg



http://languagelog.ldc.upenn.edu/myl/llog/ZitsUp.gif



http://www.goliniel.com/photo/images/hangingbike.gif









Sunday, September 26, 2010

How Our Brains Work

1. What does the word "hemisphere" refer to when talking about the brain?

 When talking about the brain, the brain contains cerebral hemispheres. The brain is divided exactly through the middle, creating the left and right cerebral hemispheres.




2. What are the major differences between the left and right sides of the brain?

The left hemisphere focuses in the logical thought. It manages: concepts, structure, obedience, regulations, time sequences, mathematics, categorizing, logic, rationality, and deductive reasoning, information, fine points, meanings, scheduling and objectives, terms, output and efficiency, science and technology, constancy, extraversion, physical aptitude, and the right side of the body.
On the other hand, the right hemisphere concentrates on insight, sentiments and sympathy, sensations, distraction, envisages, originality, color, spatial consciousness, first impressions, rhythm, naturalness and impetuosity, physical sanity, risk taking, flexibility and assortment, education by practice, interactions, spirituality, cooperation and sports, timidity, humor, motor skills, and the left side of the body.



3. What is the corpus callosum?

The corpus callosum is a thick band of 200 through 250 million nerve fibers that facilitate the communication between the left and right hemispheres.



4. Explain the study performed by Paul Broca in which he discovered "Broca's Area."

In the 1860’s, Paul Broca, a neurologist, discerned that people with damage on their left hemisphere contained language and speech tribulations. He completed studies on the brains of aphasic patients, people who cannot speak. He performed surgeries on the brain of a patient called Tan, and subsequently realized he had an injury in his left frontal lobe, and therefore could not talk. This theory was named “Broca’s Area” because of Paul Broca.

5. Explain the study conducted by Roger Sperry in regard to "split brain."

Roger Sperry was an eminent neuropsychologist who won the Nobel Prize in Medicine with his “split-brain” studies. He analyzed patients who had a split brain with the corpus callosum cut off. The patients would face a screen, which contained various objects behind it. The patient would observe the middle of the screen. Afterwards, on the left side of the person’s image field, a statement would emerge. The non-verbal right hemisphere would receive the information, and therefore the patient could not identify what they saw. Then, Sperry would tell his patient to grab an object, using his left hand, which corresponded with the previous statement that had appeared in the screen. Indeed, the left hand of the patient could grab the matching object for the reason that the right hemisphere manages all of the movement of the left side of the body. With this valid information, Sperry recognized that the right side of the brain cannot process verbal stimuli, while the left side does control the reading and speech.



6. Explain the study conducted by Carl Wernicke which led to the discovery of Wernicke's Area."

Carl Wernicke studied a patient who had suffered a stroke in 1873. The man who suffered the stroke was capable of speaking and was unimpaired in his hearing, but he could hardly comprehend what was said to him or written. After his death, Wernicke discovered a lesion in the parietal region of his patient’s left hemisphere. He came to the conclusion that the left hemisphere was involved in speech comprehension because this region is near the auditory region of the brain. Therefore, he named this syndrome as “Wernicke’s Area”.





7. Which lobe is most responsible for vision?

   The occipital lobe is responsible for the vision in a person.



8. Which lobe is most responsible for hearing and language?

   The lobe responsible for the hearing and language of a person is the temporal lobe.



9. Which lobe is most responsible for performing math calculations?

   The frontal lobe is most responsible for performing math calculations.



10. Which lobe is most responsible for judgment, reasoning and impulse
control?

   In addition, the frontal lobe is also responsible for judgment, reasoning, and impulse control.

 

Works Cited
http://faculty.washington.edu/chudler/split.html
http://nobelprize.org/educational/medicine/split-brain/background.html
http://psychology.jrank.org/pages/652/Carl-Wernicke.html

Tuesday, September 21, 2010

Phineas Gage

1. Who was Phineas Gage?

He is the most well-known individual who survived a harsh brain damage. For the most part, the doctors discovered the correlation between personality and the front parts of the brain because of the 25-year old patient Phineas Gage. Previous to his accident, he worked as the foreman of a railway construction site arranging the bed of the Rutland and Burlington Rail Road.

2. Describe the event which caused his injury.

Phineas Gage was working on the railway construction site close to Cavendish, Vermont. He was charging a hole drilled in a rock with the finality of blasting. The hole contained fuel and powder. Phineas Gage got distracted by looking at his men working in the pit. He therefore dropped the iron on the charge, and consequently, the tamping iron produced an explosion. The three foot long and fourteen pound tamping rod propelled into his cheek bone and through his head, damaging his frontal lobe and landing 100 feet behind him.

3. What happened to him as a result of his injuries?

When he arrived at the hospital, the doctor reported that Phineas Gage was cognizant, had a normal heartbeat, and a regular reaction of his pupils. He did not feel pain and still possessed the ability to reason. Nevertheless, after ten weeks from recovering, the doctor noticed a dramatic and negative change in his demeanor and character of Gage. Everyone affirmed that Gage was a reliable, dependable, and popular person. After to the accident, he became the opposite. He never recovered his old-self again after the hurtful injury. The loss of his frontal cortex caused a loss in his social inhibitions. He became offensive and irreverent. Eleven years later, he had epileptic seizures and died a year later.

4. What did we learn about the brain based on this case study?

From Phineas Gage’s case study, we can learn that the frontal cortex is involved in the personality of an individual. The frontal cortex plays a huge role in the social cognition and executive function of a person. Gage did not lose a precise mental skill, like the ability to follow directions or to speak. Nonetheless, his behavior and ethical sense were distorted. Psychologists now recognize that parts of the cortex are concerned in general mental processes.

5. Explain the idea of brain localization.

Different parts of the brain have the duty to control certain functions. This is known as brain localization. The brain carries out occupations in order to manage specific parts of the human system. This includes: speech, understanding, control of voluntary movement, vision, etc. Each fraction and division of the brain performs activities, but not all the parts direct the same function.

6. Explain the concept of brain lateralization.

The human brain is a corresponding organ. The brain is structured in two halves, which are called cerebral hemispheres. The cerebral hemispheres are similar in some ways. The meaning of brain lateralization refers to the two halves of the human brain which are unrelated. Both cerebral hemispheres contain functional specializations. The neural mechanisms are controlled in one fraction of the brain, while other activities are functioned in the other fraction.

Works Cited

Information

 Images

Thursday, September 9, 2010

Personality in The Ambit of Nature and Nurture

     “An individual's self-concept is the core of his personality. It affects every aspect of human behavior: the ability to learn, the capacity to grow and change. A strong, positive self-image is the best possible preparation for success in life (Dr. Brothers).” In the excerpt above, Dr. Joyce Brothers stated the concept of personality. Personality impacts and manages every aspect of a person’s life. But what causes personality within a human being? ‘Nature vs. nurture’ is a psychological term that questions whether heredity or the environment influences the human behavior and personality. Numerous people argue that their character traits are innate; while others argument that they gain their character traits by learning. Subsequently, the majority of the population has heard the term ‘personality’ and can depict a person’s personality. However, what most do not know is that personality is one of the most researched aspects of psychology today. So, what’s personality? In my own words, personality is a broad theme that describes one’s character traits and qualities that differentiate each individual from the rest of the people. I firmly believe that both genetics and the environment are involved in a person’s personality theory and development.

     To begin with, personality is one of the many mysteries in this universe. Personality is an individual’s characteristic pattern of feeling, acting, and thinking. It includes two other terms: a state and a trait. A state is momentary change in one’s personality. On the other hand, a trait is a permanent feature in one’s personality. Someone’s personality may vary depending on the stimulus he/her has. The beliefs of personality, in psychoanalytic psychology, include the theories of how people develop; it determines the structure of personality, the nature of mental illness, and how to treat mental and emotional problems. Scientists consider that personality consists of conscious motives and observable behaviors, which are determined by genetic or biological mechanisms.

     Moreover, what research has been done in order to prove whether personality is genetic or environmental? Family studies, twin studies, and adoption studies have been the most common research methodologies currently. Trait theorists presume that some personality variations are present at birth in a person; however, it has a lot of foregone conclusion. Plato once argued that the souls of men were made of diverse metals. He used symbolism to state that people’s personalities express and represent their inner natures. Plato therefore implicated that behaviors are innate and that they are not influenced by the environment. Psychologists interview an individual’s likes, dislikes, beliefs, goals, and values and then factor analyze their responses to prove which aspects have correlations. At the end, both genetics and the environment will always have a correspondence to influence the personality of a human being.

     Finally, the field of psychology has concluded that personality is equally caused for the motives of genetics and the environment. Genes affect proteins and proteins function by affecting the brain, causing the effects on behavior. The environmental influences are as strong and as comparable to the genetic influences. Nevertheless, the studies of environmental effects prove that there are individual differences in response. This implicates that each individual reacts in their own mode depending on the past experiences they’ve had. Each person has its own system to convalescence from the detrimental effects of psychosocial adversity. Personality involves polygenic characteristics; meaning that a person’s behavior is influenced by multiple genes and situations.

     In conclusion, personality is a characteristic pattern of thinking, acting, and feeling that is maneuvered by both biological and environmental factors. Personality encapsulates a person’s responses to their circumstances and their inner souls. As Dr. Joyce stated, personality is the foundation of the existence of a human being. It alters a person’s life for the reasons of nature and environment. Nature influences personality as much as nurture does. Every person has genes that affect their personal thinking, which subsequently affect their actions and emotional status in a certain environment.
 

Works Cited
 
http://thinkexist.com/quotation/an_individual-s_self concept_is_the_core_of_his/147493.html

http://www.libraryindex.com/pages/2236/Genetics-Environment-HOW-DO-GENES-INFLUENCE-BEHAVIORAND-ATTITUDES.html

http://allpsych.com/personalitysynopsis/intro.html

http://www.psychologytoday.com/blog/experiments-in-philosophy/200804/whats-innate-and-whats-not-and-should-we-care

http://socyberty.com/psychology/where-does-personality-come-from/

http://webspace.ship.edu/cgboer/persintro.html
http://philipschaefer.com/2008/05/19/does-personality-come-from-nature-or-nurture/

http://web.mst.edu/~pfyc212b/personal.htm

Images

http://blog.oup.com/wp-content/uploads/2007/07/nettle_personality.jpg

http://nowsourcing.com/blog/wp-content/uploads/2007/10/left-brain-right-brain.jpg