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Graeme Wadlow

Functioning of memory in subjects with autism - 0 views

www.ncbi.nlm.nih.gov/...entrez

RP1 autm PubMed memory Autism ASD

shared by Graeme Wadlow on 04 Jan 12 - No Cached
  • Graeme Wadlow on 04 Jan 12
     
    [Functioning of memory in subjects with autism] [Encephale. 2008] - PubMed result PubMed comprises more than 21 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Tero Toivanen

Autism Research Blog: Translating Autism: Language and Autism: Do kids with autism make... - 0 views

www.translatingautism.com/...and-autism-grammaticality.html

autism

shared by Tero Toivanen on 12 Mar 09 - No Cached
  • The ASD performed worse than the typically developing group across the entire grammaticality judgment task. However, the authors noted that the groups did NOT differ when the sentences were short or medium length. That is, the apparent relative weaker performance among the ASD group was mostly during long sentences. In addition, these group differences were more pronounced when the error was located at the end of long sentences. This indicates that the group differences may be due to difficulty in working memory and attention among the autism group.
  • However, it is unlikely that these findings are only attributable to working memory problems. Specifically, the ASD groups showed impaired performance only to some type grammatical errors but not others. That is, the ASD group had difficulty identifying omissions and substitution errors, but did not show difficulty identifying order or insertion errors. This suggests that attention and working memory difficulties interact with some unique deficits in grammaticality judgment.
  • Tero Toivanen on 12 Mar 09
     
    Autism Research Blog: Translating Autism: Language and Autism: Do kids with autism make grammatical errors when sentences are long?
Tero Toivanen

How to unleash your brain's inner genius - life - 03 June 2009 - New Scientist - 0 views

www.newscientist.com/...-your-brains-inner-genius.html

savant autism brain genius talent

shared by Tero Toivanen on 04 Jun 09 - Cached
  • A flurry of research published earlier this year in the journal Philosophical Transactions of the Royal Society B paints a very different picture. It turns out that these skills are far more common than previously thought. They may even arise from traits found in the general population, implying that savants are not fundamentally different from the rest of us. What's more, these skills may only blossom after years of obsessive practice, raising the question of whether many more people might cultivate similar skills, if only they had the motivation.
  • One of the biggest clues to the origins of savant talent lies in the fact that savants are far more common within the autistic population than among people with other mental difficulties.
  • Previously, about 1 in 10 people with autism were thought to have a special ability but in April, Patricia Howlin at the Institute of Psychiatry at King's College London found a much higher figure in the autistic adults she surveyed for savant skills or an exceptional cognitive ability.
  • ...11 more annotations...
  • Savant skills included more fully developed talents, such as being able to name the elevation of both the sun and the moon at any time of day, on any specified date; being able to name the day of the week for any date in the distant past or future (a talent known as calendrical calculation) and perfect pitch. Importantly, the abilities and the skills had to be exceptional by the standards of the general population, but also well above the individual's overall level of ability. In total, roughly 30 per cent had some kind of special ability (Philosophical Transactions of the Royal Society B, vol 364, p 1359).
  • For musical savants like Paravicini, Happé suggests that a bias towards small details might have led their developing brains to focus more on the exact notes than the overall melody, leading to perfect pitch and an exceptional musical memory. In art, a focus on small regions of a picture could lead to accurate perspective drawing.
  • Most people find this harder when they are shown an unsegmented version of the pattern versus a segmented one, but people with autism don't have this preference, demonstrating their skill at seeing a whole in terms of its parts even if there are no obvious dividing lines (see diagram). "It shows they are able to do the segmentation in their minds," says Winner. The precocious realists did not have this preference either, indicating a talent for realistic drawing may arise from this isolated trait commonly found in autism (Philosophical Transactions of the Royal Society B, vol 364, p 1449).
  • Although these results help to pinpoint exactly what it is about autism that predisposes people to talent, it's still not clear why an eye for detail is more common in autistic people in the first place. Clues might lie in the work of Simon Baron-Cohen from the University of Cambridge, which suggests that people with autism are "hypersensitive" to sensory information
  • Daniel Tammet, a prodigious savant who has memorised pi to 22,514 digits, believes his own talents have arisen from a special ability to connect different pieces of information together. "Savant abilities are linked to a highly associative type of thinking, an extreme form of a kind that everyone does - examples would include daydreaming, puns and the use of metaphors," he says.
  • The few studies of savant brains certainly suggest they are physically different from the average brain. For example, when Happé and Wallace studied the brain of a savant gifted at art, calendrical calculation and memory, they found his cortex was thicker in the areas associated with visuospatial processing and calculation and thinner in other regions associated with social cognition, compared with people who were neither savants nor autistic. But whether these differences were innate or grew with lifelong practice was still unclear.
  • The answer to that question may come from an unlikely source - a study of London taxi drivers who have acquired an encyclopedic memory of the streets of London known as "the Knowledge". Given that taxi drivers must remember the layout of 25,000 streets and the location of thousands of places of interest, and retrieve the information instantaneously, some researchers like Happé believe the Knowledge qualifies as a savant-like skill.
  • Eleanor Maguire and colleagues at the Institute of Neurology at University College London and colleagues found that drivers with the Knowledge have a bigger rear hippocampus than bus drivers and adults who do not drive taxis. In addition, the hippocampus appears to be larger the longer a taxi driver has been working, and shrinks once they retire (Philosophical Transactions of the Royal Society B, DOI: 10.1098/rstb.2008.0288).
  • In fact, it seems the remaining mystery is not so much how savants achieve their talents, but what drives them in the first place. "Motivation is a big unknown," says Wallace. "It's an enormous driving force in giftedness and in savants, but we don't know a lot about it."
  • One person who has something of an inside view on what contributes to savant ability is Paravicini's mentor, Adam Ockelford, a professor of music at Roehampton University in London who has watched Paravicini's talent blossom since the age of 4. When they first met, Paravicini was entirely self-taught and bashed at his plastic keyboard with his fists and elbows to reproduce the sounds he was hearing. It was only after years of practice that his technical skills developed.
  • But as researchers like Wallace have suggested, Paravicini seemed motivated way beyond the average music student. In fact, he seemed to be playing as if his life depended on it, and Ockelford thinks it's this that truly sets savants apart from their peers. "The survival instinct gets turned with extraordinary force into something else - in Derek's case music," says Ockelford. "When people see Derek, they think it is amazing, almost religious. But to me, it's mainly just hard work."
  • Tero Toivanen on 04 Jun 09
     
    But now researchers are beginning to unearth clues as to how savants' formidable brains work, and that in turn is changing our view of what it means to be a savant.
Graeme Wadlow

Eye-witness memory and suggestibility in children with Asperger syndrome. - 0 views

www3.interscience.wiley.com/...abstract

RP1 autm memory eye-witness suggestibility executive function Autism ASD Wiley InterScience Asperger Syndrome

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  • Graeme Wadlow on 04 Jan 12
     
    Eamon McCrory. 2007; Journal of Child Psychology and Psychiatry - Wiley InterScience
Tero Toivanen

Inside the Mind of a Savant: Scientific American - 1 views

www.scientificamerican.com/article.cfm

autism Kim Peek savant brains disability

shared by Tero Toivanen on 24 Dec 09 - Cached
  • In the meantime, we draw some practical conclusions for the care of other persons with special needs who have some savant skill. We recommend that family and other caregivers “train the talent,” rather than dismissing such skills as frivolous, as a means for the savant to connect with other people and mitigate the effects of the disability. It is not an easy path, because disability and limitations still require a great deal of dedication, patience and hard work—as Kim’s father, by his example, so convincingly demonstrates.
  • Tero Toivanen on 24 Dec 09
     
    Kim Peek possesses one of the most extraordinary memories ever recorded. Until we can explain his abilities, we cannot pretend to understand human cognition.
Tero Toivanen

Inside the Mind of a Savant: Scientific American - 0 views

www.scientificamerican.com/article.cfm

autism Kim Peek savant mind brain memory

shared by Tero Toivanen on 24 Dec 09 - Cached
  • Theory guides us in one respect. Kim’s brain shows abnormalities in the left hemisphere, a pattern found in many savants. What is more, left hemisphere damage has been invoked as an explanation of why males are much more likely than females to display not only savantism but also dyslexia, stuttering, delayed speech, and autism.
  • The proposed mechanism has two parts: male fetuses have a higher level of circulating testosterone, which can be toxic to developing brain tissue; and the left hemisphere develops more slowly than the right and therefore remains vulnerable for a longer period. Also supporting the role of left hemisphere damage are the many reported cases of “acquired savant syndrome,” in which older children and adults suddenly develop savant skills after damage to the left hemisphere.
  • although autism is more commonly linked with savantism than is any other single disorder, only about half of all savants are autistic.
  • Tero Toivanen on 24 Dec 09
     
    Article about Kim Peek and mind of savant.
Tero Toivanen

Facilitated communication: Facts, Discussion Forum, and Encyclopedia Article - 1 views

www.absoluteastronomy.com/...Facilitated_communication

autism Facilitated Communication FC facilitator dyspraxia mental retardation research Independent Typing

shared by Tero Toivanen on 14 Mar 10 - Cached
  • The procedure is controversial, since a majority of peer reviewPeer reviewPeer review is the process of subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field. Peer review requires a community of experts in a given field, who are qualified and able to perform impartial review...ed scientific studies conclude that the typed language output attributed to the clients is directed or systematically determined by the therapists who provide facilitated assistance. Some peer-reviewed scientific studies have indicated instances of valid FC, and some FC users have reportedly gone on to type independently.
  • Harvard UniversityHarvard UniversityHarvard University is a private university located in Cambridge, Massachusetts and a member of the Ivy League. Founded in 1636 by the colonial Massachusetts legislature, Harvard is the oldest institution of higher learning in the United States and currently comprises ten separate academic units... psychologist Daniel WegnerDaniel WegnerDaniel M. Wegner is an American social psychologist. He is a professor of psychology at Harvard University and a fellow of the American Association for the Advancement of Science. He is known for his work on mental control and conscious will, and for originating the study of transactive memory and... has argued that facilitated communication is a striking example of the ideomotor effectIdeomotor effectThe ideomotor effect is a psychological phenomenon wherein a subject makes motions unconsciously. As in reflexive responses to pain, the body sometimes reacts reflexively to ideas alone without the person consciously deciding to take action..., the well-known phenomenon whereby individuals' expectations exert unconscious influence over their motor actions. Even FC users and proponents do acknowledge the possibility of facilitators at times "guiding" users, consciously or unconsciously. Other theorists (Donnellan and Leary, 1995) argue that autism is in significant part characterized by dyspraxia (a movement disorder), and that there exists a synchronistic "dance" to communication in all mammalian social interaction which accounts for the mixed results in validation studies.
  • Stephen von Tetzchner, the author of another leading textbook on Augmentative and Alternative CommunicationAugmentative and alternative communicationAugmentative and alternative communication is communication for those with impairments or restrictions on the production or comprehension of spoken or written language.-Definition :... has done theoretical research about facilitated communication. In his opinion "The existing evidence clearly demonstrates that facilitating techniques usually led to automatic writingAutomatic writingAutomatic writing is the process or production of writing material that does not come from the conscious thoughts of the writer. Practitioners say that the writer's hand forms the message, with the person being unaware of what will be written...., displaying the thoughts and the attitudes of the facilitators."
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  • Mark Mostert (2001) says: "Previous reviews of Facilitated Communication (FC) studies have clearly established that proponents' claims are largely unsubstantiated and that using FC as an intervention for communicatively impaired or noncommunicative individuals is not recommended." In March 2007, Scott Lilienfeld included facilitated communication on a list of treatments that have the potential to cause harm in clients, published in the APSAssociation for Psychological ScienceThe Association for Psychological Science , previously the American Psychological Society, is a non-profit organization whose mission is to promote, protect, and advance the interests of scientifically oriented psychology in research, application, teaching, and the improvement of human welfare... journal Perspectives on Psychological Science.
  • The phrase "independent typing" is defined by supporters of FC as "typing without physical support", i.e., without being touched by another person. Skeptics of FC do not agree that this definition of independence suffices because of the possibility of influence by the facilitator. For example, Sue RubinSue RubinSue Rubin is a functionally non-verbal published autistic author who was the subject of the Oscar-nominated documentary Autism Is A World in which she communicated via the controversial communication technique of facilitated communication...., an FC user featured in the autobiographical documentary Autism Is A World, reportedly types without anyone touching her; however, she reports that she requires a facilitator to hold the keyboard and offer other assistance.
  • Tero Toivanen on 14 Mar 10
     
    The procedure is controversial, since a majority of peer reviewed scientific studies conclude that the typed language output attributed to the clients is directed or systematically determined by the therapists who provide facilitated assistance. Some peer-reviewed scientific studies have indicated instances of valid FC, and some FC users have reportedly gone on to type independently.
Tero Toivanen

facilitated communication - The Skeptic's Dictionary - Skepdic.com - 0 views

skepdic.com/facilcom.html

skepdic facilitated communication autism FC

shared by Tero Toivanen on 26 Mar 09 - Cached
  • The American Psychological Association has issued a position paper on FC, stating that "Studies have repeatedly demonstrated that facilitated communication is not a scientifically valid technique for individuals with autism or mental retardation" and describing FC as "a controversial and unproved communicative procedure with no scientifically demonstrated support for its efficacy."
  • Frontline Program on facilitated communication:
    • Tero Toivanen
      Tero Toivanen on 26 Mar 09
       
      Here is the video about Facilitated Communication (FC). If you have something to do with FC, I think you should watch it.
  • Parents are grateful to discover that their child is not hopelessly retarded but is either normal or above normal in intelligence. FC allows their children to demonstrate their intelligence; it provides them with a vehicle heretofore denied them.
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  • Facilitated Communication therapy began in Australia with Rosemary Crossley. The center for FC in the United States is Syracuse University, which houses the Facilitated Communication Institute (FCI) in their School of Education.
  • A very damaging, detailed criticism was presented on PBS's "Frontline", October 19, 1993. The program was repeated December 17, 1996, and added that since the first showing, Syracuse University has claimed to have done three studies which verify the reality and effectiveness of FC, while thirty other studies done elsewhere have concluded just the opposite.
  • Furthermore, FC clients routinely use a flat board or keyboard, over which the facilitator holds their pointing finger. Even the most expert typist could not routinely hit correct letters without some reference as a starting point.
  • Facilitators routinely look at the keyboard; clients do not. The messages' basic coherence indicates that they most probably are produced by someone who is looking at the keyboard.
  • Anyone familiar with Helen Keller, Stephen Hawking or Christy Brown knows that blindness, deafness, cerebral palsy, multiple sclerosis, amyotrophic lateral sclerosis (ALS), or physical or neurological disorders, do not necessarily affect the intellect. There is no necessary connection between a physical handicap and a mental handicap. We also know that such people often require an assistant to facilitate their communication. But what facilitators do to help the likes of a Hawking or a Brown is a far cry from what those in the facilitated communication business are doing.
  • But the vast majority of FC clients apparently are mentally retarded or autistic. Their facilitators appear to be reporting their own thoughts, not their patient's thoughts. Interestingly, the facilitators are genuinely shocked when they discover that they are not really communicating their patient's thoughts. Their reaction is similar to that of dowsers and others with "special powers" who, when tested under controlled conditions, find they don't have any special powers at all.
  • It is interesting that the parents and other loved ones who have been bonding with the patient for years are unable to be facilitators with their own children.
  • And when the kind strangers and their patients are put to the test, they generally fail. We are told that is because the conditions made them nervous. These ad hoc excuses sound familiar; they sound like the complaints of parapsychologists.
  • Skeptics think the evidence is in and FC is a delusion for the most part. It is also a dangerous delusion. Critics have noted a similarity between FC therapy and repressed memory therapy: patients are accusing their parents and others of having sexually abused them. Facilitators are taught that something like 13% of their clients have been sexually abused. This information may unconsciously influence their work.
  • Tero Toivanen on 26 Mar 09
     
    You find here a very about Important Video about Facilitated Communication (FC). The American Psychological Association has issued a position paper on FC, stating that "Studies have repeatedly demonstrated that facilitated communication is not a scientifically valid technique for individuals with autism or mental retardation" and describing FC as "a controversial and unproved communicative procedure with no scientifically demonstrated support for its efficacy."
Tero Toivanen

Enhanced perception in savant syndrome: patterns, structure and creativity - Philosophi... - 1 views

rstb.royalsocietypublishing.org/...1385.abstract

autism savant syndrome perception creativity pattern recognition redintegration

shared by Tero Toivanen on 24 Apr 09 - Cached
  • utistic perception is characterized by: enhanced low-level operations; locally oriented processing as a default setting; greater activation of perceptual areas during a range of visuospatial, language, working memory or reasoning tasks; autonomy towards higher processes; and superior involvement in intelligence.
  • We now propose that enhanced detection of patterns, including similarity within and among patterns, is one of the mechanisms responsible for operations on human codes, a type of material with which savants show particular facility.
  • A second mechanism, related to but exceeding the existing concept of redintegration, involves completion, or filling-in, of missing information in memorized or perceived units or structures.
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