Hereditary Deficits in Auditory Processing Leading to Language Impairment
Auditory Perceptual Disorder, Language Delay, Language Disorder
About this trial
This is an observational trial for Auditory Perceptual Disorder focused on measuring Temporal Processing, Language Impairment, Linkage Analysis, Inheritance, Language Delay, Healthy, Auditory Temporal Processing Disorder, Speech Impediment
Eligibility Criteria
INCLUSION CRITERIA: 6-85 years of age Native English speaker, with English as the first language Phase 1 Same sex twins (MZ or DZ) and both willing and able to participate in test procedures. Phase 2 Score in the top or bottom 10th percentile on tests of auditory processing or are a first-degree relative of someone who scores in the top or bottom 10th percentile and are willing and able to participate in the test procedures. EXCLUSION CRITERIA: Hearing loss, defined as air conduction pure tone thresholds (250-8000 Hz) exceeding 20 dBHL; air-bone gaps, even in the presence of normal hearing sensitivity, exceeding 10 dBHL; and/or abnormal tympanometry. History of chronic (fluid in middle ear for more than 4 months) or recurrent otitis media (more than 4 episodes of acute otitis media in one year) History of ear surgery. History or diagnosis of a central nervous system disorder, including but not limited to: Intracranial tumors Cerebrovascular disease Degenerative CNS disorder CNS trauma Encephalitis Meningitis Auditory neuropathy Attention deficit hyperactivity disorder (ADHD) Attention deficit disorder (ADD) Currently taking medications capable of altering CNS function (e.g. antidepressants, anxiolytics, or a psychostimulant drugs such as ritalin). History of treatment with ototoxic medications that may affect ultrahigh frequency hearing (e.g. cisplatin, aminoglycoside antibiotics). Unable to provide consent or assent
Sites / Locations
- National Institutes of Health Clinical Center, 9000 Rockville Pike