The mind of the mnemonists: an MEG and neuropsychological study of autistic memory savants

Behavioural Brain Research
N NeumannN Birbaumer

Abstract

About 10% of autistic individuals exhibit some form of islets of abilities in the face of serious intellectual or mental disability ("savant syndrome"). The aim of this study was to investigate brain mechanisms in a sample of autistic subjects with outstanding memory. We investigated seven mnemonist savants with high-functioning autism spectrum disorder and seven matched controls with 151-channel whole-head magnetencephalography in a continuous old-new paradigm. They were presented with 300 pseudowords and 300 shapes and had to indicate by button press, whether the presented stimulus had been shown before. Unexpectedly, mnemonist savants did not perform better than controls, but were outperformed in the recognition of pseudowords. Accordingly, event-related magnetic fields elicited by pseudowords showed widespread old-new effects in controls, but not in savants. A source analysis of its early components revealed right occipital activation in savants, but left parietal activation in controls. This might be related to a visual processing style in mnemonist savants that proved to be inefficient in this task. During the possibly familiarity-based recognition of shapes, there were earlier and more widespread bilateral old-new effect...Continue Reading

References

Feb 1, 1977·Perceptual and Motor Skills·A L Hill
Feb 1, 1989·British Journal of Psychology·N O'Connor, B Hermelin
Mar 1, 1994·Electroencephalography and Clinical Neurophysiology·P Berg, M Scherg
Jun 1, 1996·Brain and Language·L MottronE Stip
Jan 1, 1997·Neuropsychologia·D M BowlerJ M Gardiner
May 13, 1999·Memory·L MottronK Morasse
Sep 30, 2000·Perceptual and Motor Skills·T SaloviitaU Ruusila
Jan 25, 2002·Journal of Child Psychology and Psychiatry, and Allied Disciplines·N J Minshew, G Goldstein
Mar 18, 2003·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Elisabeth L Hill, Uta Frith
Jul 1, 2004·Journal of Child Psychology and Psychiatry, and Allied Disciplines·Pamela Heaton, Gregory L Wallace
Aug 27, 2004·Brain : a Journal of Neurology·Saskia J M C PalmenChristoph Schmitz
Jan 18, 2005·NeuroImage·Hideya KoshinoMarcel Adam Just
Apr 22, 2005·Developmental Neuropsychology·Robert M JosephHelen Tager-Flusberg
Aug 27, 2005·Journal of Autism and Developmental Disorders·M C GoldbergR J Landa
Nov 4, 2005·Journal of Autism and Developmental Disorders·Diane L WilliamsNancy J Minshew
Feb 2, 2006·Journal of Autism and Developmental Disorders·Francesca Happé, Uta Frith
Feb 3, 2006·Journal of Autism and Developmental Disorders·Laurent MottronJake Burack
Apr 7, 2006·Brain : a Journal of Neurology·M-J CaronM Dawson
May 25, 2006·European Journal of Human Genetics : EJHG·Sabine M Klauck
May 8, 2007·Trends in Cognitive Sciences·Michael D Rugg, Tim Curran
Oct 9, 2007·Brain Pathology·Manuel F Casanova
Jan 1, 2008·Neuropsychologia·Sebastian B GaiggDermot M Bowler
Dec 5, 2008·Journal of Autism and Developmental Disorders·Sven BölteFritz Poustka
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Darold A Treffert
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Patricia HowlinMichael Rutter
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Francesca Happé, Pedro Vital
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Simon Baron-CohenBhismadev Chakrabarti
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Laurent MottronIsabelle Soulières
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Kate Plaisted Grant, Greg Davis
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Allan Snyder
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Richard Cowan, Chris Frith
Jun 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Gregory L WallaceJay N Giedd
Feb 16, 2010·Current Opinion in Neurology·Nancy J Minshew, Timothy A Keller

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Citations

Jul 19, 2011·Neuropsychologia·Nicola NeumannChristoph Braun
Feb 6, 2020·Cognitive Neurodynamics·Yoram Baram
Apr 16, 2021·Cognitive Neurodynamics·Yoram Baram

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