title: Frequency Modulation System and speech perception in the classroom: a systematic literature review.
abstract: OBJECTIVE
  This review aimed at presenting the benefits regarding the speech perception in noise shown by children who wear hearing aid devices and/or cochlear implants with the Frequency Modulation (FM) System at school.
  
  
  METHODS
  A bibliographic survey was conducted in an electronic database with standardized search until the year 2012, and a manual search was performed by using specific keywords.
  
  
  METHODS
  For the selection and evaluation of the scientific studies chosen in the search, criteria were established covering the following aspects: type of study, participants, adopted intervention, and evaluation of results.
  
  
  METHODS
  The FM system was verified to improve speech perception and speech threshold in noise in all studies.
  
  
  RESULTS
  Regarding the performance as to type, the best results were obtained when children used the personal FM system, followed by the table and the sound field systems.
  
  
  CONCLUSIONS
  After extensive review of national and international literature, it was concluded that the studies indicate the need for further research concerning mainly the impact of the FM system on the school performance of children who have sensory devices coupled to the FM system. Findings in the literature with relation to the publications focused on speech perception in noise did not relate educational and auditory aspects.
authors.affiliation: Dental School of Bauru, Universidade de São Paulo, Bauru, SP, Brazil.
authors.forename: Ana Lívia Libardi
authors.initials: AL
authors.lastname: Bertachini
authors.affiliation: Pontifícia Universidade Católica de São Paulo, São Paulo, SP, Brazil.
authors.forename: Altair Cadrobbi
authors.initials: AC
authors.lastname: Pupo
authors.affiliation: Speech Language Pathology and Audiology Department, Dental School of Bauru, Universidade de São Paulo, Bauru, SP, Brazil.
authors.forename: Marina
authors.initials: M
authors.lastname: Morettin
authors.affiliation: Pontifícia Universidade Católica de São Paulo, São Paulo, SP, Brazil.
authors.forename: Maria Angelina Nardi
authors.initials: MA
authors.lastname: Martinez
authors.affiliation: Speech Language Pathology and Audiology Department, Dental School of Bauru, Universidade de São Paulo, Bauru, SP, Brazil.
authors.forename: Maria Cecília
authors.initials: MC
authors.lastname: Bevilacqua
authors.affiliation: Speech Language Pathology and Audiology Department, Dental School of Bauru, Universidade de São Paulo, Bauru, SP, Brazil.
authors.forename: Adriane Lima Mortari
authors.initials: AL
authors.lastname: Moret
authors.affiliation: Speech Language Pathology and Audiology Department, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Sheila Andreoli
authors.initials: SA
authors.lastname: Balen
authors.affiliation: Speech Language Pathology and Audiology Department, Dental School of Bauru, Universidade de São Paulo, Bauru, SP, Brazil.
authors.forename: Regina Tangerino de Souza
authors.initials: RT
authors.lastname: Jacob
mesh_terms: D002648:Child; D019929:Cochlear Implantation; D003054:Cochlear Implants; D006310:Hearing Aids; D006319:Hearing Loss, Sensorineural / Q000534:rehabilitation*; D006801:Humans; D013067:Speech Perception; D014706:Verbal Learning