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Early perceptual processing deficits in developmental dyslexia

Early perceptual processing deficits in developmental dyslexia

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600125043
Enrollment
Unknown
Registered
2026-05-20
Start date
2026-05-20
Completion date
Unknown
Last updated
2026-05-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

dyslexia

Interventions

Same age TD group:None
TD group with the same reading level:None

Sponsors

Peking University Sixth Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
8 Years to 13 Years

Inclusion criteria

Inclusion criteria: 1.Dyslexia group: (1) Meet the diagnostic criteria for dyslexia (Chinese character recognition is 1.5 standard deviations lower than children of the same age or Chinese character recognition is 1 standard deviation lower than children of the same age and vocabulary reading is 1.5 standard deviations lower than children of the same age, and there is at least one cognitive deficit); (2) Grades 3-6 (age 10-13 years old); (3) right-handed; (4) Normal hearing, vision or corrected vision. 2.Same age TD group: (1) Normal reading ability; (2) Gender and age were matched with the dyslexia group; (3) right-handed; (4) Normal hearing, vision or corrected vision. 3.TD group with the same reading level: (1) Normal reading ability, reading level matched the dyslexia group; (2) Grades 1-4 (age 8-11); (3) Gender matching with dyslexia group; (5) Right-handed; (6) Normal hearing, visual acuity or corrected vision.

Exclusion criteria

Exclusion criteria: 1.Patients with severe physical diseases, brain organic diseases and a history of brain trauma; 2.Other mental illnesses are excluded by MINI assessment; 3.Previous hearing or visual impairment; 4.Accompanied by severe cognitive impairment or mental retardation.

Design outcomes

Primary

MeasureTime frame
Visual evoked potential;Auditory evoked potential;

Secondary

MeasureTime frame
Contrast sensitivity test;Visual temporal sequencing task;Tone matching task;Auditory temporal judgment task;

Countries

China

Contacts

Public ContactJiuju Wang

Peking University Sixth Hospital

wangjiuju@bjmu.edu.cn+86 134 2632 9067

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 30, 2026