title: Medial olivocochlear function in children with poor speech-in-noise performance and language disorder.
abstract: OBJECTIVE
  Contralateral masking of transient-evoked otoacoustic emissions is a phenomenon that suggests an inhibitory effect of the olivocochlear efferent auditory pathway. Many studies have been inconclusive in demonstrating a clear connection between this system and a behavioral speech-in-noise listening skill. The purpose of this study was to investigate the activation of a medial olivocochlear (MOC) efferent in children with poor speech-in-noise (PSIN) performance and children with language impairment and PSIN (SLI + PSIN).
  
  
  METHODS
  Transient evoked otoacoustic emissions (TEOAEs) with and without contralateral white noise were tested in 52 children (between 6 and 12 years). These children were arranged in three groups: typical development (TD) (n = 25), PSIN (n = 14) and SLI + PSI (n = 13).
  
  
  RESULTS
  PSIN and SLI + PSI groups presented reduced otoacoustic emission suppression in comparison with the TD group.
  
  
  CONCLUSIONS
  Our finding suggests differences in MOC function among children with typical development and children with poor SIN and language problems.
authors.affiliation: Universidade de São Paulo School of Medicine (USP), São Paulo, Brazil. Electronic address: Brazil.carolrocha@usp.br.
authors.forename: Caroline Nunes
authors.initials: CN
authors.lastname: Rocha-Muniz
authors.affiliation: Universidade de São Paulo School of Medicine (USP), São Paulo, Brazil.
authors.forename: Renata Mota
authors.initials: RM
authors.lastname: Mamede Carvallo
authors.affiliation: Universidade de São Paulo School of Medicine (USP), São Paulo, Brazil.
authors.forename: Eliane
authors.initials: E
authors.lastname: Schochat
mesh_terms: D000161:Acoustic Stimulation; D001306:Auditory Pathways / Q000503:physiopathology*; D001307:Auditory Perception; D002648:Child; D003051:Cochlea / Q000503:physiopathology*; D004525:Efferent Pathways / Q000502:physiology; D005260:Female; D006801:Humans; D007806:Language Disorders / Q000150:complications / Q000503:physiopathology*; D008297:Male; D009622:Noise; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology; D013060:Speech; D013064:Speech Disorders / Q000150:complications / Q000503:physiopathology*
keywords: Medial olivocochlear system; Speech language impairment; Speech-in-noise perception; Transient evoked otoacoustic emission