Qualitatively different forms of pure alexia

Cognitive Neuropsychology
Cristina RosazzaT Shallice

Abstract

In this study we investigated two patients with pure alexia, F.C. and L.D.S., in order to make inferences about how processes and levels involved in the early stage of visual word recognition are organized and how they can be selectively damaged. Moreover, we investigated whether pure alexia can be caused by different functional deficits. F.C. and L.D.S. were presented with tasks of letter processing and tasks of orthographic integration. There was a clear double dissociation between the pattern of performance of F.C. and L.D.S. F.C. was able to process single letters rapidly and accurately, but was unable to group together the letters that he had correctly identified. By contrast, L.D.S. was slower and more impaired at letter identification, but she could use letter groups to assist reading. Thus, two different forms of pure alexia emerged: F.C. has a higher level deficit in integrating letters, whereas L.D.S. has a lower level deficit in letter processing. The results support the assumption of a functional organization of the reading process that involves a series of orthographic units (i.e., single letters, sublexical letter groups, and the lexical unit), which can be selectively damaged. Finally, our data present difficulti...Continue Reading

References

Jan 1, 1977·Neuropsychologia·T Shallice, E K Warrington
Mar 1, 1992·Neuropsychologia·J R Hanley, J Kay
Nov 1, 1991·Journal of Experimental Psychology. Human Perception and Performance·W PrinzmetalK Vest
Dec 1, 1990·Cognition·A Caramazza, G Miceli
Oct 1, 1986·International Journal of Colorectal Disease·M D Rifkin, R J Wechsler
Jul 8, 1980·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·M Coltheart
Mar 1, 1980·Brain : a Journal of Neurology·E K Warrington, T Shallice
Aug 1, 1982·The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology·K Patterson, J Kay
May 1, 1981·British Medical Bulletin·T Shallice
Jan 1, 1980·Archives of Neurology·E De RenziP Nichelli
Jan 1, 1980·Neuropsychologia·E M Saffran
Oct 1, 1994·Journal of Experimental Psychology. Human Perception and Performance·M BehrmannG Winocur
Feb 1, 1993·Brain : a Journal of Neurology·H B CoslettH Schwartz
Jun 1, 1996·Brain and Language·R PerriM C Silveri
Dec 1, 1996·Neuropsychologia·J R Hanley, J Kay
Mar 1, 1997·Neuropsychologia·E LàdavasM T Zanella
Feb 24, 2001·Psychological Review·M ColtheartJ Ziegler
Apr 11, 2001·Journal of Experimental Psychology. Learning, Memory, and Cognition·C J AlvarezM Taft
May 16, 2001·Memory & Cognition·A Rouibah, M Taft
Apr 5, 2002·Neuropsychologia·Paolo BartolomeoJean-Denis Degos
Jul 31, 2002·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Paolo Bartolomeo
Nov 8, 2002·Journal of Experimental Psychology. Human Perception and Performance·Manuel Carreiras, Manuel Perea
Dec 25, 2002·Neurocase·Adrian M OwenJohn D Pickard
May 17, 2003·Acta Psychologica·Ludovic Ferrand, Boris New
Dec 1, 1963·Brain : a Journal of Neurology·M KINSBOURNE, E K WARRINGTON
Apr 28, 2004·NeuroImage·Laurent Cohen, Stanislas Dehaene
Sep 8, 2004·Neuropsychologia·Laurent CohenSophie Ferrieux
Dec 14, 2004·Trends in Cognitive Sciences·Jonathan Grainger, Carol Whitney
Jun 14, 2005·Trends in Cognitive Sciences·Stanislas DehaeneFabien Vinckier
Nov 5, 2005·Journal of Cognitive Neuroscience·Manuel CarreirasHoracio Barber
Sep 1, 2002·Cognitive Neuropsychology·Martin ArguinDaniel Bub
Jul 1, 2005·Cognitive Neuropsychology·Martin Arguin, Daniel Bub
Mar 1, 1998·Cognitive Neuropsychology·Eleanor M Saffran, H Branch Coslett
Mar 1, 1998·Cognitive Neuropsychology·Doriana Chialant, Alfonso Caramazza
Mar 1, 1998·Cognitive Neuropsychology·Michele Miozzo, Alfonso Caramazza
Mar 1, 1998·Cognitive Neuropsychology·Marlene BehrmannJames Nelson

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Citations

Feb 5, 2009·Neuropsychological Rehabilitation·Irene Ablinger, Frank Domahs
Jul 8, 2014·PloS One·Tobias BormannLars Konieczny
Feb 12, 2014·Cognitive Neuropsychology·Teresa Schubert, Michael McCloskey
Sep 1, 2011·Rinshō shinkeigaku = Clinical neurology·Yasuhisa Sakurai
Apr 29, 2009·Neuropsychologia·Rachel H MycroftJanice Kay
Mar 10, 2012·Neuropsychologia·Marie Di PietroArmin Schnider
Feb 25, 2015·Neuropsychologia·Jing Ye BaoJason J S Barton
May 11, 2011·Neuropsychologia·Randi Starrfelt, Marlene Behrmann
Apr 13, 2013·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Keir X X YongSebastian J Crutch
Jul 28, 2009·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Maria De LucaPierluigi Zoccolotti
Mar 7, 2014·Neurocase·Tobias BormannLars Konieczny
Apr 8, 2014·Cognitive Neuropsychology·Anna M WoollamsKaralyn E Patterson
May 28, 2014·Cognitive Neuropsychology·Tim Shallice
May 8, 2014·Cognitive Neuropsychology·Thomas HabekostRandi Starrfelt
Mar 29, 2014·Cognitive Neuropsychology·Jason J S BartonCharlotte Hills
Dec 20, 2012·Nature Communications·Thomas ThesenEric Halgren
Jul 24, 2018·Cognitive Neuropsychology·Cristina RosazzaTim Shallice

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