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Developmental Language Difficulties: Behavioural and Electrophysiological Studies (LANGAGE)

L

Lille Catholic University

Status

Completed

Conditions

Dysphasia
Dyslexia

Treatments

Behavioral: auditory lexical decision task
Device: electroencephalogram

Study type

Observational

Funder types

Other

Identifiers

NCT02872870
RC-P0020

Details and patient eligibility

About

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.

Enrollment

196 patients

Sex

All

Ages

8+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion and exclusion criteria

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

Trial design

196 participants in 3 patient groups

Control adults
Description:
lexical tests and electroencephalogram (EEG).
Treatment:
Behavioral: auditory lexical decision task
Device: electroencephalogram
Dyslexic patients
Description:
lexical tests
Treatment:
Behavioral: auditory lexical decision task
Device: electroencephalogram
Dysphasic patients
Description:
lexical tests
Treatment:
Behavioral: auditory lexical decision task
Device: electroencephalogram

Trial contacts and locations

3

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Data sourced from clinicaltrials.gov

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