title: Comparing auditory steady-state responses amplitude evoked by simultaneous air- and bone-conducted stimulation in newborns.
abstract: OBJECTIVE
  The aim of this study was to evaluate the potential interactions of the simultaneous presentation of air- and bone-conducted stimuli on auditory steady-state responses (ASSR) amplitude in newborns.
  
  
  METHODS
  Bone- and air-conducted stimuli were sinusoidal carrier tones of 500 and 2000 Hz respectively modulated in amplitude (95% depth). Air- and bone- conducted stimuli were either simultaneously recorded in the same ear using insert earphones and bone vibrator respectively, or recorded individually (single stimulation).
  
  
  METHODS
  Sixty-nine well babies (135 ears) with ages ranging from 1 to 16 days (mean of 9.2 ± 7.9 days) were tested in this study.
  
  
  RESULTS
  No significant changes in ASSR amplitude by air-conducted stimuli were observed when evoked by simultaneous or single stimulation. The same trend prevailed for ASSR amplitudes evoked by bone-conducted stimuli.
  
  
  CONCLUSIONS
  The results of this study suggest that the simultaneous stimulation of air-and bone-conducted stimuli does not alter ASSR amplitude values in well babies. Therefore, the results support the use of this technique as a potential hearing screening tool to discriminate between conductive and sensorineural hearing loss.
authors.affiliation: a Speech and Hearing Sciences Department . Cuban Neuroscience Centre , La Habana , Cuba .
authors.forename: Alejandro
authors.initials: A
authors.lastname: Torres-Fortuny
authors.affiliation: a Speech and Hearing Sciences Department . Cuban Neuroscience Centre , La Habana , Cuba .|b Department of Linguistics. Faculty of Human Sciences , Macquarie University , Sydney , NSW , Australia .
authors.forename: Heivet
authors.initials: H
authors.lastname: Hernández-Pérez
authors.affiliation: c Maternity Hospital "Ramón González Coro" , La Habana , Cuba .
authors.forename: Belinda
authors.initials: B
authors.lastname: Ramírez
authors.affiliation: c Maternity Hospital "Ramón González Coro" , La Habana , Cuba .
authors.forename: Ileana
authors.initials: I
authors.lastname: Alonso
authors.affiliation: a Speech and Hearing Sciences Department . Cuban Neuroscience Centre , La Habana , Cuba .
authors.forename: Eduardo
authors.initials: E
authors.lastname: Eimil
authors.affiliation: d Institute of Basic and Pre-clinical Sciences "Victoria de Girón" , La Habana , Cuba.
authors.forename: Alioth
authors.initials: A
authors.lastname: Guerrero-Aranda
authors.affiliation: a Speech and Hearing Sciences Department . Cuban Neuroscience Centre , La Habana , Cuba .
authors.forename: Eleina
authors.initials: E
authors.lastname: Mijares
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D001306:Auditory Pathways / Q000502:physiology*; D001309:Auditory Threshold; D001844:Bone Conduction; D004569:Electroencephalography; D006320:Hearing Tests; D006801:Humans; D007231:Infant, Newborn; D015997:Neonatal Screening / Q000379:methods*; D011237:Predictive Value of Tests
keywords: Auditory steady-state response; occlusion effect; simultaneous air and bone stimulation