wagex001: October 2011 Archives

memory

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Dawit Wage
Psychology writing # 3
Date- 10/20/2011
Memory is an organism's ability to store, retain, and recall information and experience. Individual attention is necessary to store memory in the first place. Failure to retain the information can result failure to retrieve the information later. The content of the information can also determine the individual's ability to recall the information. As we know the information which is exciting is more remembered than the information which is ordinary. Psychologists divide memory in to three categories based on their capacity and the length of time each memory is expected to last, even if the distinction among these three memories are not always clear. These three memories are: sensory memory is the shortest memory which stays only a few second but it contains detailed information. The perceptual information in sensory memory appears in different forms like as iconic, echoic, and other forms of memory. Short term memory stay for 10-15 seconds little bit longer than sensory memory and has limited capacity like seven plus or minus two, however it is possible to remember more digit by using the system " chunk" that means by organizing information in to meaningful groupings. It is also possible to extend the duration of information in short term memory by "rehearsal" that is repeating the information over and over again like a phone numbers until we dialed. It is also called working memory because it contains the information that lets us remember that we are on the process of working. Its process takes place in hippocampus. Long term memory is memory that last for years or even longer. It contains a lot of information about something we know since from our child hood age. The long term memory is so fascinating because it reminds me about neurons long -term potentiation that we learned in unit three. According to Hbb's rule "cells that fire together, wire together", this means the activity of one neuron will tend to produce the activity of the other neuron. This is the reason why Taxi drivers developed the large hippocampus. The process of long term memory starts in hippocampus and stored permanently in the brain cortex. The reason I chose this topic is memory is very essential to our daily life in order to survive.large hippocampus of london taxi driver.jpg

large hippocampus of london taxi driver.jpg Source - from Lilienfeld psych# 1001 text

Memory

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Dawit Wage
Psychology writing # 3
Date- 10/20/2011
Memory is an organism's ability to store, retain, and recall information and experience. Individual attention is necessary to store memory in the first place. Failure to retain the information can result failure to retrieve the information later. The content of the information can also determine the individual's ability to recall the information. As we know the information which is exciting is more remembered than the information which is ordinary. Psychologists divide memory in to three categories based on their capacity and the length of time each memory is expected to last, even if the distinction among these three memories are not always clear. These three memories are: sensory memory is the shortest memory which stays only a few second but it contains detailed information. The perceptual information in sensory memory appears in different forms like as iconic, echoic, and other forms of memory. Short term memory stay for 10-15 seconds little bit longer than sensory memory and has limited capacity like seven plus or minus two, however it is possible to remember more digit by using the system " chunk" that means by organizing information in to meaningful groupings. It is also possible to extend the duration of information in short term memory by "rehearsal" that is repeating the information over and over again like a phone numbers until we dialed. It is also called working memory because it contains the information that lets us remember that we are on the process of working. Its process takes place in hippocampus. Long term memory is memory that last for years or even longer. It contains a lot of information about something we know since from our child hood age. The long term memory is so fascinating because it reminds me about neurons long -term potentiation that we learned in unit three. According to Hbb's rule "cells that fire together, wire together", this means the activity of one neuron will tend to produce the activity of the other neuron. This is the reason why Taxi drivers developed large hippo campus. The process of long term memory starts in hippocampus and stored permanently in the brain cortex. The reason I chose this topic is memory is very essential to our daily life in order to survive.

Source - from Lilienfeld psych# 1001 text

Circadian rhythem

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sleep disorder image.jpg Dawit Wage
Psychology writing #2
Date - 10/8/11
Circadian rhythm is the internal biological clock that regulates approximately 24 hours cycle of biological processes. It is monitored by the hormone melatonin which is secreted by the pineal gland in the brain. It is so incredible how this small tissue has a significant role in our body system. It is stimulated by external cues such as sunlight and temperature. Circadian rhythm is important in determining the sleeping pattern of human being. Could you imagine that what happen to our sleeping pattern if the circadian rhythm is not performing its function at all? I guess, we sleep all 24 hours a day without conscious awareness of our environment. We do not able to focus in our daily activities and we remain unconscious forever. What about for those who lost circadian rhythm due to Brain injuries or diseases? Do they have other mechanism to accomplish their daily activities or they just simple set up an alarm every day. I am just wondering what happen to them; do they stay conscious and be able to perform the physiological activities without the biological clock? What do you think? People with circadian sleep disorder unable to sleep and wake up at the time required for normal work, school, and social needs. We need to get enough sleep in order make our biological clock work properly so that we are able to accomplish the physiological activities in a time manner.so if we have such a dynamic tissue in our brain why we need an artificial alarm today? We do not need to spend our money for nothing. What we do is just get enough sleep and make our circadian rhythm work well.

Source - www.sciencedaily.com



Circadian rhythem

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Vote 0 Votes

Dawit Wage Psychology writing #2
Date - 10/8/11
Circadian rhythm is the internal biological clock that regulates approximately 24 hours cycle of biological processes. It is monitored by the hormone melatonin which is secreted by the pineal gland in the brain. It is so incredible how this small tissue has a significant role in our body system. It is stimulated by external cues such as sunlight and temperature. Circadian rhythm is important in determining the sleeping pattern of human being. Could you imagine that what happen to our sleeping pattern if the circadian rhythm is not performing its function at all? I guess, we sleep all 24 hours a day without conscious awareness of our environment. We do not able to focus in our daily activities and we remain unconscious forever. What about for those who lost circadian rhythm due to Brain injuries or diseases? Do they have other mechanism to accomplish their daily activities or they just simple set up an alarm every day. I am just wondering what happen to them; do they stay conscious and be able to perform the physiological activities without the biological clock? What do you think? People with circadian sleep disorder unable to sleep and wake up at the time required for normal work, school, and social needs. We need to get enough sleep in order make our biological clock work properly so that we are able to accomplish the physiological activities in a time manner.so if we have such a dynamic tissue in our brain why we need an artificial alarm today? We do not need to spend our money for nothing. What we do is just get enough sleep and make our circadian rhythm work well.

Source - www.sciencedaily.com sleep disorder image.jpg



Dawit Wage
Date - 9/24/11
Psychology 1001 writing 1

The experimental research study of psychology.
The experimental research is the study based on hypothesis and supported by evidences. In the early centuries psychologists had difficult to differentiate psychology from philosophy. There was no psychological department exists at that moment. None of them comes up with the clue of an experimental research method beyond the common sense ideas.
However, the modern psychologists developed the scientific approach studies in order to understand what human behaviors look like toward different situations that they face in their daily life. The experimental research is not an easy task to do it. It needs a great skills and strategies in order to reach on the desirable outcomes of the research. Sometimes it even obscures the researchers unless they choose the best effective methods for their researches. The experimental research must have variables that impact the outcome of the study. These variables must be operationally defined to make the study valuable and reliable. The variables have equal chances of participation in the study. It is important to control the variables under constant condition to eliminate the influence of extraneous variables which prevent us from getting the supportive ideas of our original hypothesis. The hypothesis is what we expect to happen during the experimental research study. Before conducting the research, the researcher needs to get permission from the institutional review board of the school to solve the ethical related issues problems. After collecting the data, the researcher needs to analyze the results of the study support the original hypothesis and determine if the results are statically significant. Statically significant means the results of the study are not simply by chance. Finally the results of the research study should be replicated to be universally accepted.
The reason why I choose this topic is that, it gives me the ability to evaluate claims and make a reasonable judgment based on well supported evidences rather than emotional reasoning. It helps me to analyze assumption and biases that we all see and hear through Medias today. It is the method that leads me to determine the cause and effect relationships. In general this system benefits me almost in every aspect of my life.
Link- from Scott Lilienfeld psychology text 1001

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