Dyslexia, Dysphasia
Conditions
Keywords
language disorders, developmental disorders of oral and written language
Brief summary
This study will help to better characterize oral and written language disorders and determine if these disorders are continuous or not. The participants ( dyslexic and dysphasic patients and control adults) will carry out an auditory lexical decision task during which an electroencephalogram (EEG) will be recorded.
Interventions
BEHAVIORALauditory lexical decision task
DEVICEelectroencephalogram
Sponsors
Université de Lille 3
Université Catholique de Louvain
Lille Catholic University
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
8 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
(patients): * Non-verbal intelligence quotient (IQ) less than 85 according to the Wechsler Intelligence Scale for Children (WISC) perceptual index * Specific oral language disorders diagnosed by the multidisciplinary team (neurologist, psychologist, speech therapist): understanding language deficit, estimated by the test SCOTLAND (Lecocq, 1996) and / or vocabulary test (Dunn Thiébaud). * Specific written language disorders (dyslexia) diagnosed by a multidisciplinary team according to a test that can objectify the late reading (Alouette) and locate deficits (EVALEC) * Be affiliated to a social security regimen * Have signed an informed consent or signed by the parents if the patient is minor * Aged at least 8 years old Inclusion Criteria (controls) * Non-deficit (\>85) non-verbal Wechsler Scale (codes and matrices) * No specific oral language disorders * No specific written language disorders (dyslexia) * Be affiliated to a social security regimen * Have signed an informed consent or signed by the parents if the patient is minor * Aged at least 8 years old
Exclusion criteria
* Mother tongue other than French * Non-verbal reasoning abilities below 85 measured by the WISC 4 (for patients only) and Non-verbal capacities of reasoning lower than the normal measured by the non-verbal scale of Wechsler (for controls only) * Presence of pervasive developmental disorders * No affiliation to a social security regimen * Absence of signature of the informed consent * Subject of less than 8 years
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Score EVALEC reading test | at inclusion | For test performance, clinical groups will be compared with its controls. |
| Score of reading comprehension test | at inclusion | For test performance, clinical groups will be compared with its controls. |
| Score of Khomsi | at inclusion | The objective of this group of different tests is to evaluate comprehension and production of oral language. For test performance, clinical groups will be compared with its controls. |
| Score Alouette reading test | at inclusion | In this test, the participant has to read in a loud voice a text, during three minutes. The final score takes into account the speed and the number of errors. For test performance, clinical groups will be compared with its controls. |
| Score silence reading test | at inclusion | A group of letters will be presented and the participant has to say if this letters compose a known word. For test performance, clinical groups will be compared with its controls. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Correlation between electroencephalography power spectra and clinical outcome | at inclusion | For test performance, clinical groups will be compared with its controls. |
| Measure of the electroencephalography power spectra | at inclusion | For test performance, clinical groups will be compared with its controls. |
Countries
Belgium, France
Outcome results
None listed