Theories and Stages of Memory

Theories and Stages of Memory BATHSHEBA SHEMA BAGGAI 1.0  Introduction Our memory is part of being human. It is also an indicator that we experienced and lived to this day. Theoretically, according to Mastin (n.d.), memory is our ability to encode, store, retain and consequently recall information and past experiences in the human brain. In other words, past experiences influenced our present and future behavior. When the outcome is negative we tend not to repeat what caused it, but if the outcome is positive we do the opposite. For example, as you go to work, you use a certain road every time. However, that route is always experiencing traffic jams that cause you to be late for work. By chance, one day you used another smaller road and you found that it is less congested and thus you arrive earlier to work than usual. From that day onwards since the smaller road benefits you more you will use it more frequently. This means, you used your previous experience and act accordingly the next time you go through the same situation again. In this paper, we will discuss and delve into more about memory as a whole. We will first discuss on the stages of the Multi-store model of memory which was founded by two researchers, Richard Atkinson and Richard Shriffin. The next section consists of what Short Term Memory and Long Term Memory are and their differences. This second section is a direct continuity of Memory Stage which is in the first section. The last section of the contents is in a different direction altogether. It consists of my own conceptualization the functions of memory system in human interaction model The references for this paper are mainly research journals and also website articles. Since there are a number of them, they are put in the References section. 2.0  Stages of Multi-Store Model and Memory One of the most used memory models by psychologists and non-psychologists alike is the Multi-Store model by Atkinson and Shiffrin (1968). They describe memory in terms of information flowing through a system. There are three stages of learning and memory of the Multi-Store model. The three stages which are processes are called Encoding, Storage and Recall or Retrieval (McLeod, 2007). The first stage, which is also the most important stage in creating new memory is called Encoding. It is the process which allows the information collected to be transformed or converted into a form that can be stored within our brains to be recalled later on. The process of Encoding is done in four different ways which are: Acoustic, Visual, Semantic and Tactile Encoding (Mastin, n.d.). Acoustic Encoding is the encoding (remembering and understanding) of the sounds that you hear: especially the sounds of words. When you repeat information rhythmically it is considered as Acoustic Encoding. For instance, learning the â€Å"ABC†. The alphabets of the â€Å"ABC† are put into a song similar to the nursery rhyme song â€Å"Baa Baa Black Sheep†. Other than making the learning of ‘ABC’ more enjoyable, children will remember them faster. It is the same case for the learning of the multiplication timetable. When reciting multiplication timetable, many can recite â€Å"six times six equals to thirty-six† rhythmically. This is due to the fact that the sound of the number â€Å"six† was highlighted three times. When Acoustic Encoding is the encoding of sound, Visual Encoding is the encoding of image. Visual Encoding relates to visual sensory information which is stored within the iconic memory (temporarily) first and later transferred into the long-term storage (permanent). One of the vital elements in visual encoding is the amygdala, which is a complex structure of neurons. Visual input as well as other systems’ input are accepted in the amygdala where the conditioned stimuli are then encoded into positive or negative values. As an example, if you are shown a list of words for one second. You would find that you will be able to remember if there was a word which is written in different color, or if there was a word written in bold or underlined. Visually encoded information is very fleeting and we forget them easily. We remember better when the information is encoded acoustically. The next type of Encoding is Semantic Encoding. Semantic Encoding is the processing of meaning, especially of words, though not exclusively. Most of the time it works hand in hand with Visual Encoding. For instance, when someone says â€Å"animal, grey and large† you will build a mental image on what he/she are referring to which is most probably an elephant. The last of the them is Tactile Encoding. It is based on the encoding of feeling especially touch. In a nutshell, each of the types of Encoding(s) starts with stimulus which gives out impulses/signals (nerve) which later will be processed and encoded. Paying attention is important when our memory is to be properly encoded. Thus, not all stimuli will pass through our conscious awareness, instead some will be filtered out. After the Encoding Stage comes the Memory Stage. According to Atkinson and Shriffin’s (1968) â€Å"Memory Stage Model†, there are three distinct stages in the Memory Stage itself. They are Sensory Memory/Store, Short Term Memory and Long Term Memory. All three differ in terms of capacity, function and duration. Sensory Memory which is at times called Iconic Memory holds information only for a few seconds (brief storage information). For instance, while flipping through a magazine we see eye-catching wordings of an advertisement, but after flipping to next the page we cannot remember what was actually written. This stage implies that something perceptual takes place. A stimulus might already be gone but we may still perceive it after even for just a brief moment. The next two stages of the Memory Stage will be discussed it Section 2.0. .The information people received which is stored in sensory memory is just long enough to be transferred to short-term memory The last stage of the stages of learning and memory of the multi-store model is the Retrieval Stage/Memory Retrieval. It is a process of getting or recalling information from your Storage Memory. For instance, if you can remember what you bought yesterday, information is successfully recalled from your memory into your conscious mind. The process of Retrieval is stimulated by the Retrieval Cues that includes mood and associations. If one cannot retrieve an information the cause may simply be because they did not pay attention enough, thus only some were encoded in the memory or it might be something as serious as having an amnesia. Ultimately, the role of short-term memory is to file information for temporary usage. If it is not consolidated, it is discarded. This process of discarding is important to make room for learning and new memories. But once a memory is stored in the long-term memory bank, it is stored there forever. It may not feel like it is stored there forever. Sometimes, you may not be able to recall something that is stored in the long-term memory bank—nevertheless, it is there. Because once memory is stored, it is permanent. 3.0  Short Term Memory Versus Long Term Memory In Section 2.0, we have discussed about the Memory Stage with one of its memory store which is Sensory Motor. In this section, we will further delve into the Memory Stage by dicussing about the other two stores which are Short Term and Long term Memory and its differences in terms of their storage capacities and forgetting mechanisms. Short Term Memory (STM) has a limited storage capacity. Only about seven (plus or minus two) unrelated chunks of items can be held with a time duration of 20-30 seconds at once (Mohs, 2007). For example, remembering a phone number until it is keyed into a mobile phone. After a few seconds you might not remember the set of phone numbers anymore if no effort is made to retain them. However, by using memory strategies, we can somewhat increase our memory capacity. Take for instance a ten-digit number such as 9006783456 may be too long for the use of Short Term Memory. For the set of number to stay in your STM and long enough for you to key in your mobile phone is to break it into chunks like 900-678-3456. On the other hand, Long Term Memory (LTM) has an unlimited storage capacity for information. In Short Term Memory, information remains as long as we think about it and will be discarded once we stop. In LTM, information is permanently stored in human memory. To retain information in LTM, a relation should be made between the new information to the ones we already know. This process is known as coding as information. Short Term Memory lacks this coding process, thus information is fleeting. If an information is important enough in the STM, it will be transferred to LTM. If there is an effort in retaining information like repetitively going through the information again and again (reviewing) we can remember it permanently. The more repetition and reviewing of information is made, the brain makes more neuronal connections (stronger neural pathways). At the same time, between the two neurons, the synapses become stronger because of more frequent signals passed between them. It is also im portant to realize that for memory to be consolidated there should be no interference present. In addition, when it comes to consolidation of memory and learning, sleeping plays an important role for both of them. This is proven by the founding that during sleep, the genes of rats are more expressive. In the hippocampus, the displayed activities during spatial learning is replayed. The next aspect that would be highlighted is their forgetting mechanism. In both STM and LTM a loss of information can be experienced. However, their forgetting mechanism differs from one another (Walton, 2010). In STM, loss of information can happen when there is interference. Interference happens when old information interferes with the learning of the new information. This thus makes the stored information irretrievable. Besides the Intereference Theory, there is also the Decay Theory. Decay happens when information is gradually forgotten as time goes by. It is important to note that it is not because of the effects of replacement as the Interference Theory. In contrast, Long Term Memory, loss of information is due to retrieval failure and not loss of the information. When information is not encoded correctly, our Long Term Memory will discard it out of the system. However, our memory can retrieve information if the cue matches the cue present during encoding time on the condition that loss of information is not because of brain trauma from accidents or neurodegenerative diseases such as Alzheimer’s and Parkinson’s diseases. 4.0  Concept Model of the Functions of Memory System in Human Interactions Diagram 1 Concept Model of the Functions of Memory System in Human Interactions There are many ways to conceptualize the functions of memory system in terms of human interactions. However, in the following is my own conceptualization of the mentioned topic. In my concept, the functions of memory (in human interactions) is divided into two: Social Function and also Experiential Learning (which are shown in Diagram 1). The first one that will discussed is Social Function. Good social environment is vital for strong social bonds which is necessary for our well-being; mentally as well as physically. According to Perry et al (2011), our memories are projected onto other people understand them better and to empathize their experiences. Our memory is constructive in nature where past experiences emerge together. In a certain way, this lets us to be in other people’s shoes; imagining what their experiences are like (Hassabis et al., 2013). Furthermore, this too promotes understanding and being more social. When we are experiencing the social world we must often recall, maintain, exploit and lastly update on the knowledge we have about others. People tend to react to certain social situations based on their prior experiences. According to Ciaramelli et al. (2013), we humans tend to empathize on people who are in the a similar situation that experienced in the past. However, these are in exception of amnesiacs. They do not maintain social bonds like other normal people. They too tend to have a smaller social circle. According to Beadle et al. (2013), Adult-onset hippocampal patients who suffers from amnesia are reported to have lower levels of understanding and no increase in prosocial behaviours. Besides Social Function, there is Experiential Learning. Both of these do overlap with each other, but they differ in settings. Experiential learning is more to workplace human interaction while Social is more to less professional relationships. Experiential Learning, in general is the process of learning through experience that we store in our memory. Since the dawn of time, humankind has gone through various trials and tribulations. We are what we are today because from our ancestors up to us in the present time learn to not repeat our mistakes, but vice versa when it comes to something positive. However, how can Experiential Learning relate to human interactions? Learning through experience is often used in workplaces. Let us take soccer players as an example. During practice sessions the team members will learn and practice the strategies of blocking, getting, passing the ball and catching it. However, the most important aspect they will practice on is teamwork because soccer is not a one man show. Coaches will see their individual talents and blend all them together to create a powerful team. One player’s talent may complement another player’s so they need to function together collectively. These practice sessions act as a simulator of the real game. By the time the players are joining in a real game, they would already have enough experience to ‘read’ their teammates present and next move which is crucial to score a point. This is similar in the corporate world. Members of a team need to develop a composite image of itself through discussions that develops the capacity to reflect their experiences. These discussions will pin-point the differences of experiences in team members that will then be blended together (Adams Kayes, 2010). According to Baker, Jensen Kolb (2002), â€Å"Members need to respect and be receptive to differing points of view; to take time to reflect on consequences of action and the big picture; and to desire growth and development.†As time goes on, even negative factors associated with teamwork can be overcome when teams become able to learn from experience. 5.0  Conclusion In summary, we have gone through the three stages of learning and memory of the multi-store model. These processes are called Encoding, Storage and Recall or Retrieval. Encoding which is an information procession into our memory is further broken down to different types of ways to encode which are Acoustic, Visual, Semantic and Tactile Encoding. In addition to those, Storage stage is where we store information in our memory and Retrieval is process of recalling them back to conscious mind. Besides Sensory Memory in our Storage, the other two which are Short Term Memory and Long Term Memory is explained in the next section. We have discussed how different they are in terms of storage capacities and forgetting mechanisms Short Term Memory has limited amount of storage capacity as compared to Long Term Learning which is unlimited. Their forgetting mechanisms, in other words loss of information also differ with STM due to loss of information and LTM due to retrieval failure. My conceptualization model of functions of memory system in terms of human interactions is divided into two which are Social Function and also Experiential Learning. They differ only in social settings and they overlap greatly with one another. In conclusion, in my opinion, we barely scratched the surface of our knowledge on human memory. I believe there is more to learn and discover than Atkinson’s and Shriffin’s Multi-Store model. With that being said, I hope researchers continue the journey in knowing how our memory truly works. Knowing how memory works is one step closer to knowing how the human mind works and consequently how humans work are as a whole. REFERENCES Adams, A., Kayes, D. (2010). Experiential Learning In Teams. Simulation Gaming, 330-354. Retrieved from http://learningfromexperience.com/media/2010/08/experiential-learning-in-teams.pdf Atkinson, R.C.; Shiffrin, R.M. (1968). Chapter: Human memory: A proposed system and its control processes. In Spence, K.W.; Spence, J.T. The psychology of learning and motivation (Volume 2). New York: Academic Press. pp. 89–195 Beadle J. N., Tranel D., Cohen N. J., Duff M. C. (2013). Empathy in hippocampal amnesia. Front. Psychol. 4:69 10.3389/fpsyg.2013.00069 Ciaramelli E., Bernardi F., Moscovitch M. (2013). Individualized Theory of Mind (iToM): when memory modulates empathy. Front. Psychol. 4:4 10.3389/fpsyg.2013.00004 Hassabis D., Spreng R. N., Rusu A. A., Robbins C. A., Mar R. A., Schacter D. L. (2013). Imagine all the people: how the brain creates and uses personality models to predict behavior. Cereb. Cortex. [Epub ahead of print]. 10.1093/cercor/bht042 Mastin, L. (n.d.). What Is Memory? The Human Memory. Retrieved from http://www.human-memory.net/intro_what.html McLeod, S. A. (2007). Multi Store Model of Memory Atkinson and Shiffrin, 1968. Retrieved from http://www.simplypsychology.org/multi-store.html McLeod, S. A. (2007). Stages of Memory Encoding Storage and Retrieval. Retrieved from http://www.simplypsychology.org/memory.html Mohs, R. (2007, May 8). How Human Memory Works. Retrieved from http://science.howstuffworks.com/life/inside-the-mind/human-brain/human-memory.htm Perry D., Hendler T., Shamay-Tsoory S. G. (2011). Projecting memories: the role of the hippocampus in emotional mentalizing. Neuroimage 54, 1669–1676 10.1016/j.neuroimage.2010.08.057 Walton, J. E. (2010, June 15). Long-term vs. Short-term Memory How to Maximize Both. Retrieved from http://thelatherapist.blogspot.com/2010/06/long-term-vs-short-term-memory-how-to.html

Supraclavicular Brachial Plexus Block Health And Social Care Essay

The brachial rete is a complex agreement of nervus fibers arising from the spinal column via the ventral rami of the 5th cervical to the first thoracic nervus roots. It proceeds through the cervix, armpit and into the arm where it terminates into single peripheral nervousnesss most notably average, radial, ulnar and musculocutaneous nervousnesss. These nervousnesss contribute motor and centripetal nervus supply to the upper limb. Barricading these nervousnesss near to their beginning between the cervix and the axilla is called brachial rete block. Supraclavicular block is used to providesurgical anesthesia and postoperative analgesia forthe upper limb operations. The brachial rete traditionally performed via interscalene, supraclavicular, infraclavicular and alar attacks with clinically of import advantages and disadvantages of each. The supraclavicular attack is popular for surgery affecting the manus to the elbow,1 and the brachial rete can be easy visualized by puting an ultrasound investigation at the base of the cervix merely above the collarbone. Ultrasound is used routinely for supraclavicular brachial rete blocks forsurgery affecting the manus, forearm or the cubitus. Surveies have shown that ultrasound improves the efficaciousness and safety and clip to execute the the block.2,3,4 With the blessing of the Local Ethics Committee, a prospective survey will be conducted in up to 40 ASA I, II or III patients of either sex undergoing elected upper limb surgery. A verbal account of the test, patient information sheet will be provided by the attention ( clinical/medical ) staff for the patient to see which will be about 6 hebdomads before the twenty-four hours of surgery. This will include elaborate information about the principle, design and personal deductions of the survey. When the patients will be admitted to the infirmary, they will be approached by one of the research workers farther information and account for any inquiries to assist them take an informed determination on engagement or non-participation into the trial.Following information proviso, patients will hold at least 24 hours to see engagement and will be given the chance to discourse the test with their household and health care professionals before they are asked whether they would be willing to ta ke portion in the test. The chief research worker or the co-investigator will accept the patients. All are qualified by experience and educational course of study as an anesthetic physician to take the consent for this in their everyday pattern. Assenting patients will so be officially assessed for eligibility and invited to supply informed, written consent. The right of the patient to decline consent without giving grounds will be respected. Further, the patient will stay free to retreat from the survey at any clip without giving grounds and without prejudicing any farther intervention. A transcript of the consent will be given to the patient, one filed in the Trial Master File, one filed in the infirmary notes and a 4th transcript sent to the Sponsor. For the supraclavicular block, the brachial rete will be visualized utilizing a Sonosite Titan ultrasound machine with 10MHz additive investigation. The overlying tegument will be infiltrated with 1 % lignocaine and a nervus block acerate leaf passed under ultrasound counsel so that its tip lies next to the brachial rete. After negative aspiration on the needle the survey dosage of bupivacaine will be injected. This will be done under ultrasound visual image to guarantee right location of the acerate leaf is maintained. Bupivacaine will be prepared newly for each patient. Efficacy will be assessed at 15-minute intervals for up to 45 proceedingss at the centripetal dermatomes of the average, ulnar, radial and musculocutaneous nervousnesss in the upper limb to cold utilizing an intoxicant swab ( i.e at 15, 30 and 45 proceedingss after the injection is finished ) . Failure to accomplish loss of cold esthesis with intoxicant swab at all four of the centripetal dermatomes of the average, ulnar, radial and musculocutaneous nervousnesss in the upper limb after 45 proceedingss will be considered uneffective block. This will be considered as the terminal of the survey for the participant and repetition injection utilizing 5 to 10 milliliters of local anesthetic will be done under ultrasound counsel. This will non ache because the local anesthesia of the overlying tegument from the old injection normally lasts more than 2 hours. The following patient will so have a dosage based on the CRM. The block will be assessed by the co-investigator who will non be present during the behavior of the block and hence will be wholly blind to the dosage used. The topics will non be cognizant of the dosage of the local anesthetic used. The survey is therefore double blinded since the topic the research worker and the assessor are blinded to the dosage of the local anesthetic used. The blinding of the survey will take the prejudice that may be at that place if the individual executing the block assesses the block every bit good.Statistical considerations & A ; power analysisPersonal and surgical inside informations will be collected and the informations will be presented as average ( interquartile and scope ) or per centum as appropriate. The minimum effectual dosage ( MED95 ) will be estimated utilizing CRM. Our confederates, Dr Sylvie Chevret and Dr Sarah Zohar will supply the statistical expertness for the current test. These confederates are experts in the field of CRM and have advised that a sample size of 40 patients is sufficient in theory to supply an reply to the inquiry of ED95. The design of this dose-finding, double-blind survey was chosen in order to measure the dose-response relationship of bupivacaine for supraclavicular brachial rete block utilizing ultrasound. The CRM ( Oaa‚ ¬a„?Quigley et al 1990 ) 6 utilizing a alteration in order to command outliers observations ( Resche-Rigon et al. 2008 ) 7 will be used in order to find the minimum effectual dosage ( MED ) of Bupivacaine for supraclavicular brachial rete block of 95 % of patients. The CRM is consecutive Bayesian method based on a one-parameter theoretical account, which aims at gauging the percentile of dose-response among thousand distinct dose degrees di ( i=1, †¦ ,5 ) . Each one of the six dosage degrees was randomly associated by the research worker ( harmonizing to his/her personal experience and available informations in the literature at the clip of induction of the test ) with the following prior estimated success chance, 0.5, 0.75, 0.90, 0.95, 0.98 and 0.99 for the 12, 15, 18, 21, 24 and 27 volume integrity dose severally. Then, a one-parameter power theoretical account will be used to suit the dose-response curve, with an exponential anterior distribution ( with mean = 1 ) for the theoretical account parametric quantity. The posterior response chance of each dose degree will be re-estimated after each new inclusion of cohort patients ( 2 patients per cohort ) ( see following page ) . The allocated dosage to each new cohort of patients was the dose degree with the updated posterior response chance closest to 0.95. In the present survey, the first cohort of patients will have a lading dosage of 21 volume units with the anterior success chance closest to the mark ( 0.95 ) . The MED is defined as the dose degree among the six chosen dose that had a concluding response chance closest to the mark. The determination to stop the survey was based on halting standards, in order to observe whether all doses were likely to be inefficient or a suited appraisal of the MED has been reached ( Zohar and Chevret 2001 ) .8

Doritos Superbowl Commercial

Jadah Barber Dr. Patricia  Leaf-Prince Section 08 9/10/12 SLAP â€Å"Keep your hands off my mama, keep your hands off my Doritos!!! † This was the phrase that sent millions into a roaring laugh during the 2010 Superbowl Doritos commercial. This commercial says a lot about Doritos, considering the little boy holds them to the standard of his own mother implies that his love for them is just the same as the love he has for his mother. In many was this commercial was effective.One way was showing the little boy picking a fight with someone who is clearly bigger and stronger than him, another was the love the boy had for his Doritos made me feel like I just had to have some just to see if I feel the same way. Lastly the young boys emotion towards the man conveyed a sense of anger and seriousness implying that, at that very moment there was absolutely nothing more serious that a strange man in his house eating his Doritos. The commercial starts and we see an African American male knocking on a door with flowers, an African American female comes to the door and takes the flowers.Here we see they are obviously about to go out on a date. When the little boy is first introduced to the commercial he is seen with a look of anger. He drops his game controller to show the viewer that he is in fact mad about something. The man picks up a Dorito and starts talking to the boy. Here the man is just trying to be nice but the little boy gets mad, slaps the man and tells him to keep his hands off of his mama and his Doritos. The slap was unexpected, humorous and effective all at the sane time.While all of this was going on, the thought that flew through my head was â€Å"what was so good about these Doritos that it made a little boy want to slap a grown man and tell him to keep his hands off? † We see in commercial that the love he has for his mother is the same love he has for his Doritos. We know this because he phrases his words In such a way that he puts his mo ther and his Doritos on the same level. The commercial is implying that Doritos are so good they would make you slap someone if they tried to take any from you at any time.The young boy was mad at the man the whole commercial. From the moment the boy first entered the commercial he was angry for some reason. He never once took his eye off the older man, he wanted to keep staring just to make it a point that he was in fact mad. In the beginning he was mad that this man was coming in to take his mother out but the slap only came in when the man put his hands in the Doritos bowl sitting in the middle of the table. This commercial was effective.It made the viewer feel like â€Å"If the Doritos were that important to him they must be really good. † Every feeling the this commercial was trying to display was felt through the TV screen. A serous moment for a little boy and his Doritos became a hilarious commercial for Superbowl millions of viewers Work Cited for Commercial on Web â €Å"Doritos Superbowl Commercial: Keep your hands off my mama & Doritos. † Commercial. You Tube. 7 Feb. 2010 28 Sept. 2012. <http://www. youtube. com/watch? v=kJDLws_l3Ok>

Different types of port ownership and administrative regimes Free Essay Example, 2500 words

The port of Holyhead in Wales is an example of a company-owned or private port. It is wholly-owned by Sealink, handling about two million passengers annually with services operated from Holyhead by B&I Line to Dublin and Sealink (or Stena Link) to Dun Laoghaire. (Hooydonk 2003, p. 43) Sealink operates the port and its facilities and have often implemented policies that benefit the company’s ferry operations. The port authorities of Rotterdam, is an example of a municipal administration for which an elected government representative overseas the port administration. The city government is responsible for the port strategy including an investment programme, among other efforts. W. G. Salet, Anton Kreukels, and Andy Thornley (2003) explained this in detail: The Rotterdam port and port economy in circles of the national government made it possible to take a number of necessary measures and to safeguard the smooth functioning of this world port. The most important factor here seems to be the continuing solid association of the harbour barons and captains of the port with each other and with the strong municipal authority. (p. 195) The strong municipal government involvement in Rotterdam port administration stems from the fact that the city’s economy is closely tied to the health of the port. We will write a custom essay sample on Different types of port ownership and administrative regimes or any topic specifically for you Only $17.96 $11.86/pageorder now Unlike Amsterdam, Rotterdam is incapable of attaining sufficient economic strength and of attracting other economic activities apart from those related to the seaport during this last 10-15 years. This is expressed in the ongoing outmigration of people and businesses to other regions since 1980s due to the weakening activities in the Rotterdam port, particularly in its shipbuilding industry. (Salet, Kreukels and Thornley, p. 195) State Ports The common concession that the coastal state should be accorded exclusive authority to prescribe policy and administration of a specific port is based on the principle that the state has a clearly predominant interest in the facility. (MacDougal and Burke 1987, p. 156) State ports follow a central port administration such as those in Southern Europe and much of South America wherein the national government controls all main ports or that various layers of it act as partners in the administration of ports. This is also the case in most ports in the United States. While there is no centralized ports administration, various levels of federal, state and local administration are in place. Control and ownership is normally vested in three levels: central or national (e. g.