(C) 2002, SNU Biointelligence Lab, Bioinformatic Quest for the Holy Grail: UG gene Su Dong Kim Biointelligence Lab. Interdisciplinary.

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Presentation transcript:

(C) 2002, SNU Biointelligence Lab, Bioinformatic Quest for the Holy Grail: UG gene Su Dong Kim Biointelligence Lab. Interdisciplinary Program in Cognitive Science, Seoul National University

2 Bioinformatic Quest for the Holy Grail: UG gene Logical necessity of UG Evolution of UG Brain structure and Language Disorders Language Disorders & UG SLI & WS FOXP2, language gene Cognitive Genetics Bioinformatic Quest

3 Logical necessity of UG

4 Evolution of UG

5 Why Study Language Disorders? To locate language in the brain To reveal workings of the grammar

6 Brain Structure and Aphasia

7 Language Disorders & UG Having language localized in a specific area of the brain predicts the following: – impaired linguistic ability with regular intelligence – impaired general intelligence with regular linguistic ability Specific Language Impairment (SLI) Williams’ Syndrome (WS)

8 Specific Language Impairment Has a specific genetic profile Slow rate of speech Stopped to correct themselves 5X more than normal OK with saying if words are English or not: Problems with inflection (tense, number)

9 Genetic Study Results of SLI

10 Pedigree of the KE family

11 PET & MRI Study of the KE family (A) Parasaggital section (PET) (B) Coronal section (PET) (C) Transverse section (MRI)

12 Identification of FOXP2 gene

13 Phylogenetic Map of FOXP2

14 Williams’ Syndrome (WS) Genetic hallmark; – deletion on chromosome band 7q Physical characteristics: – elfin appearance – particular heart defects Cognitive problems: – only rudimentary skills in reading, writing, math – problems with spatial understanding Normal to superior linguistic abilities; – very expressive and fluent

15 Brain Cytoarchitectonic in WS

16 Neurophysiological Profile of WS

17 Molecular Genetic Profile for WS

18 Genetics and Cognitive Ability

19 Bioinformatic Quest for the Holy Grail: UG gene