Re-Defining Dyslexia: Accounting for variability
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https://doi.org/10.24310/espsiescpsi.v4i2.13315Keywords:
Developmental dyslexia, Multi-factorial deficit, ReviewAbstract
The scientific effervescence that reigns around developmental dyslexia is explained by the difficult challenge that consists of ascribing this handicap to a single cause whilst multiple profiles of dyslexic patients can be observed. In this chapter, we start by presenting the main neuro-cognitive hypotheses that aim to explain dyslexia. We then review the multidimensional nature of dyslexia, and discuss the necessity of using a common diagnostic criteria to improve our understanding of its true nature. We then conclude by presenting promising work connecting cerebral endophenotypes and behavioral phenotypes highlighting the need for a multi-factorial rather than mono-theoretical account of developmental dyslexia.
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References
Ahissar, M (2007). Dyslexia and the anchoring-deficit hypothesis. Trends in Cognitive Science, 11, 458-65. http://dx.doi.org/10.1016/j.tics.2007.08.015
Banai, K., Hornickel, J., Skoe, E., Nicol, T., Zecker, S. & Kraus, N. (2009). Reading and subcortical auditory function. Cerebral Cortex, 19, 2699-707. http:www.//dx.doi.org/10.1093/cercor/bhp024
Banai, K & Ahissar M. (2010). On the importance of anchoring and the consequences of its impairment in dyslexia. Dyslexia, 16, 240-257. http://dx.doi.org/10.1002/dys.407
Bishop, D.V.M. & Snowling, M.J. (2004). Developmental dyslexia and specific language impairment: same or different? Psychological Bulletin, 130, 858-886. http://dx.doi.org/10.1037/0033-2909.130.6.858
Boder, E. (1973). Developmental dyslexia: a diagnostic approach based on three atypical readingspelling pattern. Abstract, Developmental Medical and Child Neurology, 15, 663-687. http://dx.doi.org/10.1111/j.1469-8749.1973.tb05180.x
Bosse, M.L., Tainturier, M.J. & Valdois, S. (2007). Developmental dyslexia: the visual attention span deficit hypothesis. Cognition, 104, 198-230. http://dx.doi.org/10.1016/j.cognition.2006.05.009
Bradley, L. & Bryant, P. (1983). Categorizing sounds and learning to read: A causal connection. Nature, 30, 419-421. http://dx.doi.org/10.1038/301419a0
Brkanac, Z., Chapman, N.H., Matsushita, M.M., Chun, L., Nielsen, K., Cochrane, E., Berninger, V.W., Wijsman, E.M. & Raskind, W.H. (2007). Evaluation of candidate genes for DYX1 and DYX2 in families with dyslexia. American Journal of Medicine Genetics, Neuropsychiatric Genetics, 144B, 556-560. http://dx.doi.org/10.1002/ajmg.b.30471
Castles, A. & Coltheart, M. (1993). Varieties of developmental dyslexia. Cognition, 47, 149-180. http://dx.doi.org/10.1016/0010-0277(93)90003-E
Chapman, N.H., Igo, R.P., Thompson, J.B., Matsushita, M., Brkanac, Z., Holzman, T., Berninger, V.W., Wijsman, E.M. & Raskind, W.H. (2004). Linkage analyses of four regions previously implicated in dyslexia: confirmation of a locus on chromosome 15q. American Journal of Medicine Genetics, 131B, 67-75. http://dx.doi.org/10.1002/ajmg.b.30018
Comptom, D.L., Defries, J.C. & Olson, R.K. (2001). Are RAN- and phonological awareness-deficits additive in children with reading disabilities? Dyslexia, 7, 125-149. http://dx.doi.org/10.1002/dys.198
Demb, J.B., Boynton, G.M. & Heeger, D.J. (1997). Brain activity in visual cortex predicts individual differences in reading performance. Proceedings of the National Academy of Sciences USA, 94, 13363-13366. http://dx.doi.org/10.1073/pnas.94.24.13363
Demb, J.B., Boynton, G.M. & Heeger, D.J. (1998). Functional magnetic resonance imaging of early visual pathways in dyslexia. The Journal of Neuroscience, 18, 6939-6951.
Demonet, J.F., Taylor, M.J. & Chaix, Y. (2004). Developmental dyslexia. Lancet, 363, 1451-1460. http://dx.doi.org/10.1016/S0140-6736(04)16106-0
Doyon, J., Song, A.W., Karni, A., Lalonde, F., Adams, M.M. & Ungerleider, L.G. (2002). Experiencedependent changes in cerebellar contributions to motor sequence learning. Proceedings of the National Academy of Sciences USA, 99, 1017-1022. http://dx.doi.org/10.1073/pnas.022615199
Dufor, O., Serniclaes, W., Sprenger-Charolles, L. & Demonet, J.F. (2007). Top-down processes during auditory phoneme categorization in dyslexia: A PET study. NeuroImage, 34, 1692-1707. http://dx.doi.org/10.1016/j.neuroimage.2006.10.034
Dufor, O. Serniclaes, W. Sprenger-Charolles, L. & Démonet, JF. (2009). Left premotor cortex and allophonic speech perception in dyslexia: a PET study. Neuroimage, 46, 241-8. http://dx.doi.org/10.1016/j.neuroimage.2009.01.035
Eckert, M. (2004). Neuroanatomical markers for dyslexia: A review of dyslexia structural imaging studies. The Neuroscientist, 10, 362-371. http://dx.doi.org/10.1177/1073858404263596
Fawcett, A.J., Nicolson, R. & Dean., P. (1996). Impaired performance of children with dyslexia on a range of cerebellar tasks. Annals of Dyslexia, 46, 259-283. http://dx.doi.org/10.1007/BF02648179
Finch, A.J., Nicolson, R.I. & Fawcett, A.J. (2002). Evidence for a neuroanatomical difference within the olivo-cerebellar pathway of adults with dyslexia. Cortex, 38, 529539. http://dx.doi.org/10.1016/S0010-9452(08)70021-2
Fletcher, J.M., Francis, D.J., Rourke, B.P., Shaywitz, S.E. & Shaywitz, B.A. (1992). The validity of discrepancy-based definitions of reading disabilities. Journal of Learning and Disabilities, 25, 555. http://dx.doi.org/10.1177/002221949202500903
Francks, C., Fisher, S.E., Marlow, A.J., MacPhie, I.L., Taylor, K.E., Richardson, A.J., Stein, J.F. & Monaco, A.P. (2003). Familial and genetic effects on motor coordination, laterality, and reading-related cognition. American Journal of Psychiatry, 160, 1970-1977. http://dx.doi.org/10.1176/appi.ajp.160.11.1970
Galaburda, A.M. & Kemper, T.L. (1979). Cytoarchitectonic abnormalities in developmental dyslexia: A case study. Annal of Neurology, 6, 94-100. http://dx.doi.org/10.1002/ana.410060203
Galaburda, A.M. & Livingstone, M. (1993). Evidence for a magnocellular defect in developmental dyslexia. Annals of the New York Academy of Science, 682, 70-82. http://dx.doi.org/10.1111/j.1749-6632.1993.tb22960.x
Galaburda, A.M., Menard, M.T. & Rosen, G.D. (1994). Evidence for aberrant auditory anatomy in developmental dyslexia. Proceedings of the National Academy of Sciences USA, 91, 8010-8013. http://dx.doi.org/10.1073/ pnas.91.17.8010
Gayan, J. & Olson, R.K. (2003). Genetic and environmental influences on individual differences on printed word recognition. Journal of Experimental Child Psychology, 84, 97-123. http://dx.doi.org/10.1016/S0022-0965(02)00181-9
Giraud, K., Démonet, J.F., Habib, M., Marquis, P., Chauvel, P. & Liegeois-Chauvel, C. (2005). Auditory evoked potential patterns to voiced and voiceless speech sounds in adult developmental dyslexics with persistent deficits. Cerebral Cortex, 15, 1524-1534. http://dx.doi.org/10.1093/cercor/bhi031
Goldberg, T.E. & Weinberger, D.R. (2004). Genes and the parsing of cognitive processes. Trends in Cognitive Sciences, 8, 325-335. http://dx.doi.org/10.1016/j.tics.2004.05.011
Gottesman, L.I. & Gould, T.D. (2003). The endophenotype concept in psychiatry: etymology and strategic intentions. American Journal of Psychiatry, 160, 636-645. http://dx.doi.org/10.1176/appi.ajp.160.4.636
Habib, M. (2000). The neurological basis of developmental dyslexia. An overview and working hypothesis. Brain, 123, 2373-2399. http://dx.doi.org/10.1093/brain/123.12.2373
Hoeft, F., Meyler, A., Hernandez, A., Juel, C., Taylor-Hill, H., Martindale, J.L., McMillon, G., Kolchugina, G., Black, J.M., Faizi, A., Deutsch, G.K., Siok, W.T., Reiss, A.L., Whitfield-Gabrieli, S. & Gavrieli, J.D.E. (2007). Functional and morphometric brain dissociation between dyslexia and reading ability. Proceedings of the National Academy of Sciences USA, 104, 4234-4239. http://dx.doi.org/10.1073/pnas.0609399104
Jenner, A.R., Rosen, G.D. & Galaburda, A.M. (1999). Neuronal asymmetries in primary visual cortex of dyslexic and nondyslexic brains. Annals of Neurology, 46, 189-196. http://dx.doi.org/10.1002/1531-8249(199908)46:2<189::AID-ANA8>3.0.CO;2-N
Kaufman, W.E. & Galaburda, A.M. (1989). Cerebrocortical microdysgenesis in neurologically normal subjects: A histopathologic study. Neurology, 39, 238-244.
Lisker, L. & Abramson A.S. (1964). A cross-language study of voicing in initial stops: acoustical measurements. Word, 20, 384-422.
Livingstone, M.S., Rosen, G.D., Drislane, F.W. & Galaburda, A.M. (1991). Physiological and anatomical evidence for a magnocellular defect in developmental dyslexia. Proceedings of the National Academy of Sciences USA, 88, 7943-7947. http://dx.doi.org/10.1073/pnas.88.18.7943
Lovegrove, W.J., Bowling, A., Badcock, D. & Blackwood, M. (1980). Specific reading disability: Differences in contrast sensitivity as a function of spatial frequency. Science, 210, 439-440. http://dx.doi.org/10.1126/science.7433985
Lovett, M.W., Steinbach, K.A. & Frijters, J.C. (2000). Remediating the core deficits of developmental reading disability: a double-deficit perspective. Journal of Learning Disabilities, 33, 334-358. http://dx.doi.org/10.1177/002221940003300406
Mugnaini, D., Lassi, S., La Malfa, G. & Albertni, G. (2009). Internalizing correlates of dyslexia. Word Journal of Pediatrics, 5, 255-264. http://dx.doi.org/10.1007/s12519-009-0049-7
Nicolson, R,I, Fawcett, A.J., & Dean, P. (2001). Developmental dyslexia: The cerebellar deficit hypothesis. Trends in Neuroscience, 24, 508-511. http://dx.doi.org/10.1016/S0166-2236(00)01896-8
Nicolson, R.I. & Fawcett, A.J. (2007). Procedural learning difficulties: reuniting the developmental disorders? Trends in Neurosciences, 30, 135-141. http://dx.doi.org/10.1016/j.tins.2007.02.003
Paulesu, E., Démonet, J.F., Fazio, F., McCrozy, E., Chanoine, V., Brunswick, N., Cappa, S.F., Cossu, G., Habib, M., Fritch, C.D. & Frith, U. (2001). Dyslexia: Cultural diversity and biological unity. Science, 16, 2165-2167. http://dx.doi.org/10.1126/science.1057179
Pernet, C., Andersson, J., Paulesu, E. & Démonet, JF. (2009). When all hypotheses are right: a multifocal account of dyslexia. Human Brain Mapping, 30, 2278-92. http://dx.doi.org/10.1002/hbm.20670
Pernet, C.R. & Démonet, J-F (in press). A multifactorial approach to dyslexia. In A. Benasich & R.H. Fitch (Eds.), Developmental Dyslexia: Early Precursors, Neurobehavioral Markers and Biological Substrates. Baltimore, MD: Brookes Publishing Co.
Pernet, C.R., Poline, JB., Démonet, JF. & Rousselet, G.A. (2009). Brain classification reveals the right cerebellum as the best biomarker of dyslexia. BMC Neuroscience, 10, 67. http://dx.doi.org/10.1186/1471-2202-10-67
Peyrin, C., Démonet, J.F., Baciu, M., Le Bas, JF & Valdois, S. (in press). Superior parietal lobe dysfunction in a homogeneous group of dyslexic children with a single visual attention span disorder. Brain & Language. http://dx.doi.org/10.1016/j.bandl.2010.06.005
Pugh, K.R., Mencl, W.E., Jenner, A.R., Katz, L., Frost, S.J., Lee, J.R., Shawitz, S.E. & Shawititz, B.A. (2000). Functional neuroimaging studies of reading and reading disability (developmental dyslexia). Developmental Disability Research Review, 6, 207-213. http://dx.doi.org/10.1002/1098-2779(2000)6:3<207::AID-MRDD8>3.0.CO;2-P
Ramus, F., Rosen, S., Dakinm S,C, Day, B.L., Castellote, J.M., White, S. & Frith, U. (2003). Theories of developmental dyslexia: Insights from a multiple case study of dyslexic adults. Brain 126, 841-865. http://dx.doi.org/10.1093/brain/awg076
Ramus, F. (2004). Neurobiology of dyslexia: A reinterpretation of the data. Trends in Neurosciences, 27, 720-726. http://dx.doi.org/10.1016/j.tins.2004.10.004
Ramus, F. & Szenkovits, G. (2008). What phonological deficit? Quarterly Journal of Experimental Psychology, 61, 129-141. http://dx.doi.org/10.1080/17470210701508822
Raskind, W.H., Igo, R.Jr., Chapman, N.H., Berninger, V.W., Matsushita, M., Brkanac, Z., Holzman, T., Brown, M., Thomson, J. & Wijsman, E.M. (2005). A genome scan in multigenerational families with dyslexia: Identification of a novel locus on chromosome 2q that contributes to phonological decoding efficiency. Molecular Psychiatry, 10, 699-711.http://dx.doi.org/10.1038/sj.mp.4001657
Ruff, S., Cardebat, D., Marie, N. & Démonet, J.F. (2002). Enhanced response of the left frontal cortex to slowed down speech in dyslexia: An fMRI study. Neuroreport, 13, 1285-1289. http://dx.doi.org/10.1097/00001756-200207190-00014
Serniclaes, W., Sprenger-Charolles, L., Carre, R. & Démonet, J.F. (2001). Perceptual discrimination of speech sounds in developmental dyslexia. Journal of Speech, Language and Hearing Research, 44, 384-399. http://dx.doi.org/10.1044/1092-4388(2001/032)
Shaywitz, S.E. & Shaywitz, B.A. (2005). Dyslexia (specific reading disability). Biological Psychiatry, 57, 1301-0309. http://dx.doi.org/10.1016/j.biopsych.2005.01.043
Siegel, L.S. (1992). An evaluation of the discrepancy definition of dyslexia. Journal of Learning and Disabilities, 25, 618-629. http://dx.doi.org/10.1177/002221949202501001
Siegel, L.S. (2006). Perspective on dyslexia. Paediatrics and Child Health, 11, 581-587.
Skotun, B.C. (2000). The magnocellular deficit theory of dyslexia: evidence from contrast sensitivity. Vision Research, 40, 111-127. http://dx.doi.org/10.1016/S0042-6989(99)00170-4
Song, J., Banai, K., Russo, N. & Kraus, N. (2006). On the relationship between speech- and nonspeech evoked brainstem responses. Audiology and Neurotology, 11, 233-241. http://dx.doi.org/10.1159/000093058
Stein, J.F. (2001). The magnocellular theory of developmental dyslexia. Dyslexia, 7, 12-36. http://dx.doi.org/10.1002/dys.186
Stein, J.F. & Walsh, V. (1997). To see but not to read: The magnocellular theory of dyslexia. Trends in Neuroscience, 20, 147-151. http://dx.doi.org/10.1016/S0166-2236(96)01005-3
Stoodley, C.J. & Schmahmann, J.D. (2009). Functional topography in the human cerebellum: A meta-analysis of neuroimaging studies. NeuroImage, 44, 489-501. http://dx.doi.org/10.1016/j.neuroimage.2008.08.039
Tallal, P. (2004). Improving language and literacy is a matter of time. Nature Reviews Neuroscience, 5, 721-728. http://dx.doi.org/10.1038/nrn1499
Tallal, P., Stark, R.E. & Mellits, E.D. (1985). Identification of language impaired children on the basis of rapid perception and production skills. Brain and Language, 25, 314-322. http://dx.doi.org/10.1016/0093-934X(85)90087-2
Valdois, S., Bosse, M.L., Ans B., Zorman, M., Carbonnel, S., David, D. & Pellat, J. (2003). Phonological and visual processing deficits are dissociated in developmental dyslexia: Evidence from two case studies. Reading and Writing, 16, 543-572. http://dx.doi.org/10.1023/A:1025501406971
Wolf, M. & Bowers, P.G. (1999). The double deficit hypothesis for the developmental dyslexias. Journal of Educational Psychology, 91, 415-438. http://dx.doi.org/10.1037/0022-0663.91.3.415
Wolf, M. & Bowers, P.G. (2000). Naming speed processes and developmental reading disabilities: an introduction to the special issue on the double-deficit hypothesis. Journal of Learning Disabilities, 33, 322-324. http://dx.doi.org/10.1177/002221940003300404
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