Reactivation In Memory

The study of creation of false memories has been a topic of interest since the 1930s when Bartlett (1932) conducted the first experiment on the topic. Though the results of this experiment were never replicated, they contributed greatly to research by distinguishing between reproductive and reconstructive memory (Bartlett 1932 as cited in Roediger & McDermott, 1995). Reproductive memory refers to accurate production of material from memory and is assumed to be associated with remembering simplified materials (e.g., lists). Reconstructive memory emphasizes the active process of filling in missing elements while remembering and is associated with materials rich in meaning (e.g., stories).

Memory is one of the most critical parts of cognition. It is important because it is involved in almost every aspect of cognition including problem solving, decision making, attention, and perception. Because of this importance, people rely on one’s memory to make important decisions. The value of one’s memory in this society is so high that it is used as evidence to either save one’s life or kill one’s life during murder trials. But as many of the cognitive psychologists know, human’s memory can cause many errors. One of these errors is false memory which is either remembering events that never happened or remembering events differently from the actual event. This finding of false memory raised big interests among psychologists and

The phenomenon of explaining false memory occurrences is rising. Researchers have developed a paradigm known as “Deese-Roediger-McDermott paradigm” in efforts to examine false memories in depth (Dehon, Laroi & Van der Linden, 2011). In the DRM paradigm, participants are introduced to and asked to memorize a list of correlated words congregating towards a vital subject word that is never introduced (Dehon, Laroi & Van der Linden, 2011). The rate that participants recall this false decoy is alarming. Researchers have provided several explanations to explain for the false memories in the DRM paradigm (Dehon, Laroi & Van der Linden, 2011). The two most notable in explaining false memories in the DRM paradigm are the fuzzy-trace theory and the activation/monitoring theory (Dehon, Laroi & Van der Linden, 2011). While the two theories are particularly dissimilar, they both sustain that information developing throughout list encoding attributes an essential part in false memory construction (Dehon, Laroi & Van der Linden, 2011).

Elizabeth Loftus is a psychologist that studies the way memories can be altered or implanted into someone’s mind (McLeod, Loftus and Palmer, 2010). One of the experiments she conducted was to implant a false memory of getting lost in a shopping mall as a child into the mind of a teenager (False Memories, 1992). She did this by getting the parents to write down memories their child would remember and placing a fake one in their of getting lost while shopping in a mall (False Memories, 1992). The teenager thought they remembered the time they got lost and were even telling details about that time (False Memories, 1992). After realising that she was able to plant a memory into a person’s head she realised the memory is not always accurate (False Memories, 1992). Loftus described memory in three words, suggestive, subjective and malleable (False Memories, 1992).

Human is smarter than other animals because we have a strong ability to learn and to remember. We have memories so we don’t need to relearn everything every time when we see have to use these knowledges. Then, if I ask a question, “Can you trust everything that you remembered?” Most people may say “Yes!”. However, according to the speech given by Elizabeth Loftus, a psychological scientist who studies false memory for decades, the truth might be different from what most of us think.

Memory is a cognitive function of the brain that is often taken for granted. Memory may have many purposes, but most importantly it is essentially a record of an entire life span. From this perspective memory is the most important aspect of consciousness. Unfortunately, through formal experimentation it has been shown that memory is fairly inaccurate, inconsistent, and often influenced by our own experiences as well as the bias of others. Memory is not only affected during an observed event, but there are instances where memory can be influenced after an event as well. There are also instances where memory can be affected retroactively due to personal experiences and biases. Incorrectly recalling the memories of one’s life is usually not

Neurobiological studies show that both suppression and recall and the creation of false memories are possible. (Kandel, 1994) In this paper both sides of the debate will be analyzed and evaluated.

The retrieval of a memory can initiate processes in our brain that actively consolidate and strengthen the memory trace, a process known as memory reconsolidation. Memories retrieved are thought to increase their stability once they undergo the process of consolidation. Retrieval of a memory trace may cause another liable phase to require more processing to keep the memory stable after retrieval; the brain systemically acquires cellular mechanisms to initiate a new round of protein synthesis that saves the trace from degradation. (Rudy CITE) There has been recent issues concerning the relationship between post-traumatic stress disorder and reconsolidation of fear memories brought about by individuals who experience the disorder.

A number of studies have proved that the action of an individual can influence an observer in terms of decision making (Cole, Wright, Doneva & Skarratt, 2015) and inhibition of return (Skarratt, Cole and Kingstone, 2010). An experiment has been conducted in the standard social inhibition of return (SIOR) paradigm and recognition memory test (RMT) to see whether SIOR can influence humans to retrieves their memories. There were studying phase and testing phase in this experiment. In the studying phase, two participants were sat opposite to each other and remembered a word list of 52 words. In the testing phase, they were asked to press one of the two words on the screen. There were actually two conditions. In one of the conditions, one word is

After a new memory is learnt, it enters the process of encoding during which the memory is labile and capable of disruption until it becomes stabilised over a period of time (Nader & Einarsson, 2010; Nader et al, 2000). This process is called consolidation and originally consisted of the theory that once stabilised in the brain, it remains fixed (Suzuki et al, 2004). This theory has been rebutted by the acceptance of reconsolidation, a theory that imposes the ideology that when memories are retrieved, through similar experiences (Lee, 2009), they become labile until,

A study that contradicts their theory was conducted by Neisser & Harsch in 1992. They wanted to explore the accuracy of flashbulb memory and so they gave out a questionnaire to 106 participants the day after the ‘Challenger Space Shuttle’ Explosion. Three years later, they sent out the exact same questionnaire to the same group of participants and compared the answers to the original. The results displayed that the participant’s’ memories faded from the time they took the questionnaire to the time they took it three years later. Even though such errors were evident, the participants remained very confident about the accuracy of their memory. Neisser and Harsch concluded that flashbulb memories are not as vivid and accurate as previously thought.

These photos either contained details about themselves, unfamiliar details or both. Their results found that the highest false memory effects occurred for those photos that contained only personal details. Photos that had both details had the overall lowest rating for a previous memory. Showing that false memories are more likely to occur when personal information is presented, but unfamiliar information hindered the process.

In the first follow-up interview, roughly eighteen percent remembered the false event and in the second follow-up, twenty-five percent remembered the false event (Hyman, Husband, & Billing 1995). As this study indicates, memories are more susceptible to modification when the passage of time allows the original memory to fade. Being lost, however, is not the same as being abused. Another crucial component involved in the formation of false memories is the imagination inflation. Loftus (1997) found that the more often an individual imagined an unperformed action, the more likely they were to later on remember having performed it.

Prior to the early 1970s the prominent idea of how memories were formed and retrieved revolved around the idea of processing memory into specific stores (Francis & Neath, 2014). These memory stores were identified as sensory memory, short-term memory, and long-term memory. In contrast to this idea, two researchers named Fergus Craik and Robert Lockhart proposed an idea linking the type of encoding to retrieval (Goldstein, 2015). This idea is known as the levels of processing theory. According to this theory, memory depends on the depth of processing that a given item is received by an individual (Goldstein, 2015). Craik and Lockhart stressed four points in supporting their theory. First, they argued that memory was the result of a series of analyses, each level of the series forming a deeper level of processing than the preceding level (Francis & Neath, 2014). The shallow levels of processing were believed to hold less importance and are defined as giving little attention to meaning of an item. Examples of which include focusing on how a word sounds or memorizing a phone number by repeating it over and over again (Francis & Neath, 2014) (Goldstein, 2015). The deeper levels processing involve paying close attention to the meaning of an item and relating that meaning to something else, an example of which would be focusing on the meaning of a word rather than just how the word sounds (Francis & Neath, 2014) (Goldstein, 2015). The second point Craik and Lockhart

Memory facilitates necessary functions in daily life activities, but it is not a perfect mechanism in operation. Goldstein (2011) states that memory is, “…the process involved in retaining, retrieving, and using information about stimuli, images, events, ideas, and skills after the original information is no longer present” (p.116). There are many adaptive functions within the complexities of the human memory system and the interlinked constructs between each function leave room for doubt in the accuracy of recollection. Study of the human mind has opened avenues of discovery on the inner workings of our brains and the resulting knowledge suggests that humans are prone to creating false memories and even remembering things that never actually happened. A great deal of information has been written explaining the nature of memory errors and within the following pages a real-life case offers a glimpse into how recall distortions and memory errors can wield unpleasant consequences. Memory errors can be avoided with a significant effort, but the truth remains that no one is perfect and memories are subject to individual bias.