Literature Review Sleep is a vital portion of human life. Sleep helps the body recharge and repair. In recent history literature has been produced that supports a link between declarative memory and sleep. The aim of this literature review is to exaime previous studies surrounding the relationship between sleep intervals and long term memory retention.
Sleep smart – optimizing sleep for declarative learning and memory authored by Gorden Feld and Susanne Diekelman in 2015 reviews neurological studies done by other academics in the field and appoarches to sleep’s interaction with declarative memory in the slow wave sleep interval. The relavent article portion focouses on encoding, the learning of information, consolidation
…show more content…
The 23 male participants were each assigned an experimental sleep group and participated in two nights of testing one week apart. The first experimental group was the early retention condition who learned for 45 minutes then slept for 3 and were awoken for a 15 minute retrieval session. The second experimental group was the late retention condition; they were sleep deprived for a longer period of time. The second group followed the same routine of learning, sleeping and retrieval. The third group was kept awake for the entire experiment and followed the same timeline. Memory was tested using an emotional and neutral text and two extra texts. Participants were asked to memorise as many details as possible, following this the participants were asked to rate how arousing the text was on a scale 7 point scale, -3 to +3 under 11 subcategories. Following this free recall was tested by asking participants to write down as many details as possible, there was not time limit. The results indicate that the first experimental group had superior retention. Those who experienced late sleep had better retention of emotional texts after late sleep compared to late …show more content…
Walker’s 2006 article Sleep Facilitates Consolidation of Emotional Declarative Memory provides further insight into memory retention. The study looked at both neutral and arousing episodic memory in a 12-hour time span either following or without sleep and whether or not the participant’s memory is triggered by an episode (“remember”) or make a judgment about something they have previously experienced (“know”). Hu, Stylos-Allan, Walker’s hypothesis was that sleep-dependent modulation of episodic memory would be particularly prominent for emotionally arousing stimuli. There were 14 participants, 8 female, 6 male. Administered twice during a 12-hour period participants were required to complete an emotional memory task, each stimuli contained 300 picture slides specified on arousal strength but only 180 were shown to participant, 60 were considered arousing and 60 were considered neutral. The group of participants was split into two groups: those who experienced the wake phase first and those who experienced the sleep phase first. The following week the participants returned and completed the level. In the follow up participants had to identify if photos were in the original set of stimuli shown or not. The subjects had to indicate if they made a recall judgment and had seen the image before (remember) or if they knew it was in the previous stimuli selection but could not provide a context (know) or they thought the
Sleep deprivation is a commonplace occurrence in modern culture. Every day there seems to be twice as much work and half as much time to complete it in. This results in either extended periods of wakefulness or a decrease in sleep over an extended period of time. While some people may like to believe that they can train their bodies to not require as much sleep as they once did this belief is false (1). Sleep is needed to regenerate certain parts of the body, especially the brain, so that it may continue to function optimally. After periods of extended wakefulness or reduced sleep neurons may begin to malfunction, visibly effecting a person's behavior. Some organs, such as muscles, are able to regenerate even when a person is not sleeping so long as they are resting. This could involve lying awake but relaxed within a quite environment. Even though cognitive functions might not seem necessary in this scenario the brain, especially the cerebral cortex, is not able to rest but rather remains semi-alert in a state of "quiet readiness" (2). Certain stages of sleep are needed for the regeneration of neurons within the cerebral cortex while other stages of sleep seem to be used for forming new memories and generating new synaptic connections. The effects of sleep deprivation on behavior have been tested with relation to the presence of activity in different sections of the cerebral cortex.
Is sleep important for memory consolidation? Past research has found that sleep is an important factor in the consolidation of newly acquired memories; however, this consolidation often depends on the specific memory as well as when (e.g., time after learning) sleep occurs. It is important to note that sleep is not constant, throughout the night. Sleep is a cycle that is broken down into rapid eye movement (REM) and non-rapid eye movement (non-REM) sleep (Stickgold, 2005). Non-REM consists of sleep stages 1 through 4, in which stages 3 and 4 constitute what is known as slow-wave sleep (SWS) (Rasch & Born, 2008). Moreover, the construct of memory is often divided into different types of memories, declarative (e.g., facts and events) and non-declarative (e.g., procedural skills) (Stickgold, 2005). When discussing memory consolidation, research has defined it as a progression of memory stabilization that leads memories to become resistant to interference (Stickgold, 2005). Results from past research indicate that memory consolidation occurs through the reactivation of memories during sleep, which enhances and stabilizes the memory (Diekelmann & Born, 2010).
...ep. There are events in sleep that are associated with synaptic modification, which is the basis of brain rewiring that enhances cognition. There is evidence that sleep accelerated transcription of cortical genes that are associated with protein synthesis9. These newly generated proteins are known to be required for strengthening of existing synapses and building new synapses. Studies have found increase of factors associated with brain-plasticity and enhanced learning during sleep5. These factors include phosphorylated or activated CREB, a transcriptional factor, as well as Arc, BDNF, and NGFI-A. These evidence help explain how sleep can influence brain rewiring through synaptic modification. This mechanism helps explain how sleep can modify the brain and ultimately enhance learning. This is a strong evidence that supports the synaptic downscaling hypothesis.
studying the subject, the origins in the brain responsible for sleep are still not fully understood and thus, facilitate continual probes
Memory is a group of related mental processes that are involved in acquiring, storing, and retrieving information (Hockenberry and Hocenberry page 232). I will be addressing two specific types of memory: short-term memory and long-term memory. Short-term memory holds temporary information transferred from sensory memory or long-term memory. Sensory memory is the first stage of memory and obtains information for a brief amount of time. Short-term memory is also called active memory and is stored in the prefrontal cortex which is the most active part of the brain during an activity. Short-term memory can hold information for roughly twenty seconds, but sensory memory holds information for a shorter amount of time. We usually store things such
In this experiment conducted by Turner, T.H. et al (2007), the researchers studied a sample of healthy, young individuals. Forty subjects total eighteen who were women spent six full nights and five days at the University of California, at San Diego General Clinical Research Center’s J Christian Gillin Laboratory of Sleep and Chronobiology. For this experiment participants were excluded for reasons such as having psychiatric history, a significant medical condition, or taking nicotine or any illegal substance. Three days prior to the study, participants were requested to halt consumption of any and all alcohol and caffeine. A polysomnography was completed over the course of the first night to identify or rule out the existence of any intrinsic sleep disorder that a participant may have had prior to the study. Furthermore, those being observed had to maintain a habitual sleep schedule of around seven to nine hours per night. After the second night, the total sleep deprivation (TSD) period began, where participants were to remain awake for the duration of the experiment. During TSD, subjects were able to move but were not allowed to take part in strenuous exercise, sun exposure, using of any type of stimulant, or sleeping. Various continuous recognition tests (CRTs) designed to observe working memory and sleep deprivation were administered to the
A restorative theory claims that sleep is used to repair the body including the brain. Oswald suggests that slow wave sleep is when body repair occurs and REM sleep is when the brain is repaired. This is supported by the fact that there is an increase in the secretion of growth hormones during SWS. This could also explain why brain activity levels are high during REM sleep, and similar to when awake.
If all of these important activities occur during sleep, why is it that people are so willing to short themselves of this vital activity? Although much about sleep still remains a mystery, research and experiments continue to show how important sleep is to each and every person. Throughout this paper, I will discuss sleep and the effects that it has on performance and health, especially among college students. A college student’s sleeping pattern is a reliable indicator of their level of performance in the classroom and other school-affiliated activities, as a lack of sleep leads to decreased performance. Sleep is directly related to the level of performance and health of an individual; the more rested a person is, the better that person will perform and feel (Dryer, 2006).
Introduction Sleep studies have been conducted since as early as 1913. However, the impact of school start times on student academics is often overlooked by most schools. In reality, start times can significantly affect academic performance by disrupting adolescents' normal sleep cycle, leading to a lack of sleep that impairs learning, and hindering academic performance. These theories have been tested through sleep studies, and most of them have been found to be true. Sleep Cycle Changes When children transition from primary school to middle or high school, it can significantly affect their learning due to changes in their sleep cycle.
Vandekerckhove, M., & Cluydts, R. (2010). The emotional brain and sleep: An intimate relationship. Sleep Medicine Reviews, 14(4), 219-226. doi:10.1016/j.smrv.2010.01.002
Sleep has always been a popular subject among humans. There have been many studies that examine sleep and its correlation with a wide variety of variables, such as depression, energy levels, and grades. Students, as a group, are widely studied. As the world’s future leaders and thinkers, there is great importance placed on their achievements. In this study the effect of student sleep habits on perceived academic performance is investigated. Many things may affect students’ academic success among these variables are sleep habits.
Sleep deficiency impairs the neurocognitive functioning and prevents proper retention of information by the brain. Moreover, inadequate sleep at night diminishes attention span, alertness, creativity and concentration levels of the students. According to Curcio, Ferrara & De Gennaro (2006) students with more regular sleep-wake cycles are more likely to report a higher GPA (p. 326). Finally, I will explain how sleep-disordered breathing caused due to sleep deprivation, may also be associated with poor academic achievement and neurocognitive impairments such as critical thinking and
Sleep is a reversible, repetitive, and active behavior which plays different roles. These roles include restoration processes, memory consolidation, learning or growth. As argued out by Curcio, Ferrara and De Gennaro (2006), during sleep, neuro-cognitive, psychological, as well as behavioral processes take place. Many individuals sacrifice their sleep with an aim of carrying out extra activities. However, sleep loss has been found to have various negative effects. Some of these effects include impairment in psychomotor, neurocognitive performances, and sleepiness (Curcio et al., 2006). Results from recent studies have demonstrated that sleep plays an integral role in memory consideration and learning processes (Deregnaucourt et al., 2005 & Curcio et al., 2006). This paper will evaluate journals and other accredited sources of information in an effort to review, analyze, critique and synthesize works of other scholars on how sleep affects learning.
Rasch, Björn, and Jan Born. "About Sleep 's Role in Memory." Physiological Reviews. American Physiological Society, n.d. Web. 06 May 2016.
Sleep plays a vital role in a person’s mental well-being. Sleeping affects how well people think, react, work, learn, and get along with others. While a person is sleeping, his brain is preparing to help him learn and remember information. A good night’s sleep enhances learning and problem solving skills. It is very important for the students to have sound sleep as it can improve their concentration, memory and creativity. Furthermore, having enough sleep increases the ability to m...