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Contents contributed and discussions participated by paisleyd

paisleyd

'Brain training' app may improve memory, daily functioning of people with schizophrenia... - 0 views

  • A 'brain training' iPad game developed and tested by researchers at the University of Cambridge may improve the memory of patients with schizophrenia
  • Schizophrenia is a long-term mental health condition that causes a range of psychological symptoms, ranging from changes in behaviour through to hallucinations and delusions
  • patients are still left with debilitating cognitive impairments, including in their memory
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  • increasing evidence that computer-assisted training and rehabilitation can help people with schizophrenia overcome some of their symptoms
  • Schizophrenia is estimated to cost £13.1 billion per year in total in the UK, so even small improvements in cognitive functions could help patients make the transition to independent living
  • The game, Wizard, was the result of a nine-month collaboration between psychologists, neuroscientists, a professional game-developer and people with schizophrenia
  • patients who had played the memory game made significantly fewer errors and needed significantly fewer attempts to remember the location of different patterns in the CANTAB PAL test relative to the control group. In addition, patients in the cognitive training group saw an increase in their score on the GAF scale
  • Participants in the training group played the memory game for a total of eight hours over a four-week period; participants in the control group continued their treatment as usual. At the end of the four weeks, the researchers tested all participants' episodic memory using the Cambridge Neuropsychological Test Automated Battery (CANTAB) PAL, as well as their level of enjoyment and motivation, and their score on the Global Assessment of Functioning (GAF) scale
  • The memory task was woven into a narrative in which the player was allowed to choose their own character and name; the game rewarded progress with additional in-game activities to provide the user with a sense of progression independent of the cognitive training process
  • Because the game is interesting, even those patients with a general lack of motivation are spurred on to continue the training
  • used in conjunction with medication and current psychological therapies, this could help people with schizophrenia minimise the impact of their illness on everyday life
  • It is not clear exactly how the apps also improved the patients' daily functioning, but the researchers suggest it may be because improvements in memory had a direct impact on global functions or that the cognitive training may have had an indirect impact on functionality by improving general motivation and restoring self-esteem
  • This new app will allow the Wizard memory game to become widely available, inexpensively. State-of-the-art neuroscience at the University of Cambridge, combined with the innovative approach at Peak, will help bring the games industry to a new level and promote the benefits of cognitive enhancement
paisleyd

Study reveals how brain multitasks: Findings help explain how the brain pays attention ... - 0 views

  • a shell-shaped region in the center of the mammalian brain, known as the thalamic reticular nucleus or TRN, is likely responsible for the ability to routinely and seamlessly multitask
  • its individual neurons as possible regulators of the brain's ability to multitask
  • blocking out distracting information from other senses
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  • a newly emerging model of how the brain focuses attention on a particular task, using neurons in the thalamic reticular nucleus as a switchboard to control the amount of information the brain receives, limiting and filtering out sensory information that we don't want to pay attention to
  • People need to be able to focus on one thing and suppress other distractions to perform everyday functions such as driving, talking on the phone, and socializing
  • sets the stage for ever more detailed studies on the complex behavior involved in how the mammalian brain pays attention to what's important, and especially how those neural circuits are broken in cases of attention-deficit diseases, such as ADHD, autism, and schizophrenia
  • ndividual TRN neurons that act like a "switchboard," continuously filtering sensory information and shifting more or less attention onto one sense
  • The test, they say, was designed to gauge how well the area of the brain known to control higher behavioral functions, the prefrontal cortex, could direct the focus on one sense over another
  • researchers distracted the mice with opposing stimuli: If the mouse was expecting a flash of light to guide it to the milk reward, the researchers distracted it with a sound, and vice versa. Distracting the mice decreased their ability to collect the food reward to 70 percent from nearly 90 percent, even if the distracting stimulus was removed later
  • found that inactivating the prefrontal cortex region of the brain, which is believed responsible for decision-making in complex behaviors, disrupted TRN neural signaling and reduced mice to only random success in obtaining a milk reward when presented with specifically cued light or sound signals
  • Inactivating the TRN, while leaving the cortical regions intact, also diminished success with obtaining the prompted food reward
  • prefrontal cortex is essential to performing such behavioral tasks
  • this part of the brain "stores the knowledge ultimately communicated to the TRN to control how much visual or auditory sensory information is suppressed or not, and how the brain ultimately multitasks
paisleyd

'The Dress': Explanation of optical illusion of colors of the striped dress -- ScienceD... - 0 views

  • demonstrating that the optical illusion is linked to specific brain activation patterns
  • Many renowned research institutes have explored the phenomenon from various angles
  • differences in human brain activity caused by the contrasting perceptions
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  • no differences between the groups were identified in correctly naming the colours of the squares
  • brain activation of all participants was measured while they looked at the photo of The Dress via a computer-based presentation system
  • participants looked at coloured squares with the same colour properties as the photo of The Dress
  • tested participants who perceived the dress as white-gold or black-blue
  • They demonstrated that in a direct comparison of groups the photo triggered differential brain activation, depending on their perception
  • participants who saw the dress as white-gold presented additional activation, mainly in frontal and parietal brain areas
  • Frontal regions are particularly involved in higher cognitive processes such as selective attention and decision making
  • Before, no optical illusion existed with exactly two competing perceptions which could not be deliberately manipulated
  • research group succeeded in identifying brain areas which cause optical illusions
  • thus we have laid a foundation for further research in the field of visual processing
paisleyd

People with higher 'intellectual arrogance' get better grades: But humble people got hi... - 0 views

  • People who think they know it all -- or at least, a lot -- may be on to something
  • having an accurate or moderate view of one's intelligence and being open to criticism and ideas -- would correlate with grades
  • rating one's intellectual arrogance -- an exaggerated view of intellectual ability and knowledge -- instead generally predicted academic achievement, especially on individual course work, according to the study
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  • ranslates to increases in academic performance
  • rating themselves on a "humble-ometer," people generally did not see themselves as others see them
  • other team members gave better evaluations to those they viewed as humble
  • Then they took tests -- first individually, then with fellow group members, who gave feedback on each member's work. Students earned credit for individual and group performances
  • They measured "intellectual humility," based on such traits as "open to criticism" and "knows what he/she is not good at." They also measured "intellectual arrogance," based on such traits as "is close-minded" and "believes own ideas superior to others' ideas.
  • Additional traits also were evaluated, among them assertiveness, intelligence, self-discipline, openness and sense of humor
  • intellectually arrogant whom they saw as being high in dominance, extraversion and wanting to be the center of attention, but low in agreeableness and conscientiousness
  • But it's more challenging for groups to recognize what behavior reveals another person's humility, as opposed to simply being shy or unsure
  • Learning something new requires first acknowledging your own ignorance and being willing to make your ignorance known to others
paisleyd

Four-day school week can improve academic performance, study finds -- ScienceDaily - 0 views

    • paisleyd
       
      Could this have something to do with sleep and how it helps one retain information that they have learned
  • comparing fourth-grade reading and fifth-grade math test scores from the Colorado Student Assessment Program (CSAP) for students who participated in a four-day school week, versus those who attended a traditional five-day school week
  • We thought that especially for the younger, elementary school kids, longer days on a shorter school week would hurt their academic performance because their attention spans are shorter. Also, a longer weekend would give them more opportunity to forget what they had learned
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  • little evidence that moving to a four-day week compromises student academic achievement
  • The researchers found a four-day school week had a statistically significant impact on math scores for fifth-grade students, while reading scores were not affected
  • did not have negative effects
  • The four-day school week requires school districts to lengthen the school day
  • My own personal hypothesis is teachers liked it so much--they were so enthusiastic about the four-day week--they did a better job. There's some evidence in other labor studies that four-day work weeks enhance productivity
  • Walker notes the results are only applicable to smaller and more rural school districts
paisleyd

Scientists, practitioners don't see eye to eye on repressed memory -- ScienceDaily - 0 views

  • Skepticism about repressed traumatic memories has increased over time
  • whether such memories occur and whether they can be accurately retrieved
  • Whether repressed memories are accurate or not, and whether they should be pursued by therapists, or not, is probably the single most practically important topic in clinical psychology
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  • beliefs about how memory works
  • some believed that traumatic memories could be repressed for years only to be recovered later in therapy, others questioned the concept, noting that lack of scientific evidence in support of repressed memory
  • Roughly 60-80% of clinicians, psychoanalysts, and therapists surveyed agreed to some extent that traumatic memories are often repressed and can be retrieved in therapy, compared to less than 30% of research-oriented psychologists
  • belief in repressed memory is still prevalent among the general public
  • researchers on the one hand and clinicians and the public on the other
  • In the courtroom, beliefs about memory often determine whether repressed-memory testimony is admitted into evidence
paisleyd

Mass participation experiment reveals how to create the perfect dream -- ScienceDaily - 0 views

  • The experiment shows that it is now possible for people to create their perfect dream, and so wake up feeling especially happy and refreshed
  • an iPhone app that monitors a person during sleep and plays a carefully crafted 'soundscape' when they dream. Each soundscape was carefully designed to evoke a pleasant scenario, such as a walk in the woods, or lying on a beach, and the team hoped that these sounds would influence people's dreams
    • paisleyd
       
      Emotions effect a great amount of our brain
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  • researchers collected millions of dream reports. After studying the data, Professor Wiseman discovered that the soundscapes did indeed influence people's dreams
  • people's dreams were especially bizarre around the time of a full moon
  • the team also found that certain soundscapes produced far more pleasant dreams
  • Having positive dreams helps people wake-up in a good mood, and boosts their productivity. We have now discovered a way of giving people sweet dreams, and this may also form the basis for a new type of therapy to help those suffering from certain psychological problems, such as depression
paisleyd

What dreams may come: End of life dreams may be comforting -- ScienceDaily - 1 views

  • end-of-life dreams and visions (ELDVs) are an intrinsic and comforting part of the dying process
  • "the most common dreams and visions were of deceased relatives or friends." Dreams and visions about the deceased were "significantly more comforting" to patients than other kinds of ELDVs, and became more frequent as the person approached death
  • characterized by a consistent pattern of realism and emotional significance
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  • If they are seen as delusions or hallucinations, they are treated as problems to be controlled
  • During a delirium state, the person has lost their connection to reality and ability to communicate rationally. Delirium is distressing and dangerous, and must be treated medically. In contrast, our study shows that ELDVs are typically comforting, realistic, and often very meaningful, highlighting a critical difference.
paisleyd

A nap to recap: How reward, daytime sleep boost learning: Findings could benefit educat... - 2 views

  • rewards as you learn can help cement new facts and skills in your memory
  • combined with a daytime nap
  • Even a short nap after a period of learning is beneficial
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  • that information is favourably consolidated over information associated with a low reward and is transferred to areas of the brain associated with long-term memory
  • Both groups' performance was better for highly rewarded picture pairs, but the sleep group performed better overall
  • participants who had slept after learning were selectively better for the highly rewarded pairs
    • paisleyd
       
      Our brains want this sense of reward for being right. It connects a good feeling to something that has caused a reward and therefore we remember it better. Also, the brain has an easier time moving memories from short-term to long-term memory when they are asleep.
  • The people who slept were also more confident of achieving a correct answer during the memory tests, even after three months
  • We already knew that sleep helps strengthens memories, but we now also know that it helps us select and retain those that have a rewarding value
  • consolidation of memory should work to prioritise information that is critical to our success and survival
paisleyd

Alzheimer's disease: Plaques impair memory formation during sleep: Protein deposits ass... - 0 views

    • paisleyd
       
      The flaws in the brain and it's ability to transfer memories from short to long term. The brain is complex and needs the ability to transfer information. The memories never form and are never able to be recalled.
  • Researchers from the Technical University of Munich (TUM) have now been able to show for the first time how the pathological changes in the brain act on the information-storing processes during sleep.
  • slow oscillations, which our brain generates at night, have a particular role in consolidating what we have learned and in shifting memories into long-term storage.
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  • this coherence process is disrupted in Alzheimer's disease.
  • β-amyloid plaques
  • these plaques directly impair the slow wave activity.
  • this balance was disturbed by the protein deposits, so that inhibition was reduced.
  • Low doses of sleep-inducing drugs as possible therapy
paisleyd

Cadaver Experiment Suggests Human Hands Evolved for Fighting - 0 views

    • paisleyd
       
      Humans brains and bodies have been designed to survive. The decisions we make to run from possibly dangerous situations are a clear example of this. And we have evolved to defend ourselves from possible dangers.
  • idea that human hands evolved not only for manual dexterity, but also for fistfights.
  • fist fighting might have helped to drive the evolution of not only the human hand, but also the human face and the human propensity to walk upright.
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  • secured these lines to guitar-tuner knobs that helped apply tension to the tendons
  • hold them open for slaps, weakly clench them into "unbuttressed" fists or strongly curl them into "buttressed" fists.
  • humans can safely strike with 55 percent more force with a buttressed fist than with an unbuttressed fist, and with twice as much force with a buttressed fist than with an open-hand slap.
  • fists can protect hand bones from injuries and fractures
  • reducing the level of strain during striking
  • evolution favored lengthening the big toe and shortening other toes so that humans could run more easily
  • improved understanding of who we are, of human nature, should help us prevent violence of all kinds in the future."
paisleyd

What's the Difference Between the Right Brain and Left Brain? - 0 views

  • The two hemispheres communicate information, such as sensory observations, to each other through the thick corpus callosum that connects them.
  • left hemisphere
  • carrying out logic and exact mathematical computations.
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  • left brain pulls it from your memory.
  • face recognition and processing music.
  • right hemisphere
  • helps us to comprehend visual imagery and make sense of what we see.
  • increasing its processing capacity and avoiding situations of conflict where both sides of the brain try to take charge."
    • paisleyd
       
      The mind is strong but it has its flaws. Is that why the right side of our brain seems to take in most of the patterns we see. At the same time the right side of our brain seems to focus less on logic and more on emotion.
paisleyd

The Origins of Religion: How Supernatural Beliefs Evolved - 0 views

  • specifically, why such beliefs even exist in the first place.
  • how early humans interacted with their natural environment
  • All of a sudden, you see the grasses in front of you rustling. What do you do? Do you stop and think about what might be causing the rustling (the wind or a lion, for example), or do you immediately take some kind of action?
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  • People who took their time got selected out,
  • hypersensitive agency-detecting device, or HADD,
  • facilitated the rapid decision-making process that humans had to go through when they heard a rustling in the grass. (Lions act of their own accord. Better run.)
  • HADD may have planted the seeds for religious thought.
  • humans started attributing agency to things that really didn't have agency at all.
  • tendency to explain the natural world through the existence of beings with supernatural powers — things like gods, ancestral spirits, goblins and fairies — formed the basis for religious beliefs, according to many cognitive scientists.
  • They started attributing meaning to the actions of things that weren't really acting of their own accord.
  • they started anticipating what other beings' actions might be and planning their own actions accordingly.
  • "You might think that raindrops aren't agents," Clark said. "They can't act of their own accord. They just fall.
  • enabled them to discern other people's positive and negative intentions
  • thereby increasing their own chances of survival.
  • attributing purpose to the actions of nonactors, like raindrops, ToM took a turn toward the supernatural.
  • Theory of Mind
  • refer to HADD and ToM as the "god faculty,"
  • human beings haven't evolved past this way of thinking and making decisions,
    • paisleyd
       
      We are still in the same evolutionary mind set of daily survival so it makes sense that attributing emotion and reasoning onto things around us has not changed either.
  • "You can be educated out of some of these beliefs, but you can't be educated out of these cognitive faculties. We all have a hyperactive agency-detecting device. We all have a theory of mind."
  • a trait that stuck around because the people who possessed it were better able to survive and pass on their genes.
  • Religion may have naturally sprung up from this need to keep everybody on the same page,
  • Humans' predisposition to attribute intention to just about everything (e.g., volcanic eruptions, lunar eclipses, thunderstorms) isn't necessarily the reason religion came about,
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