title: Obligatory cortical auditory evoked potential waveform detection and differentiation using a commercially available clinical system: HEARLab™.
abstract: OBJECTIVE
  The aim was to investigate detection and differentiation of obligatory cortical auditory evoked potentials (CAEPs) in normal-hearing listeners with and without a simulated conductive hearing impairment using the HEARLab™.
  
  
  METHODS
  Sound field CAEPs were obtained from 24 normal-hearing adults, with and without earplugs, using three natural speech sounds (/m/, /g/, and /t/) presented at 55, 65, and 75 dB SPL.
  
  
  RESULTS
  Response detection was good except for the lowest presentation level; however, differentiation of waveforms was generally poor for individual listeners.
  
  
  CONCLUSIONS
  Waveform differentiation was relatively poor, especially at low presentation levels, using the HEARLab's stimulus and analysis protocol.
authors.affiliation: School of Psychological Sciences, University of Manchester, United Kingdom. kevin.j.munro@man.ac.uk
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Munro
authors.forename: Suzanne C
authors.initials: SC
authors.lastname: Purdy
authors.forename: Sadia
authors.initials: S
authors.lastname: Ahmed
authors.forename: Rushanara
authors.initials: R
authors.lastname: Begum
authors.forename: Harvey
authors.initials: H
authors.lastname: Dillon
mesh_terms: D000328:Adult; D001303:Auditory Cortex / Q000502:physiology; D001844:Bone Conduction / Q000502:physiology*; D004430:Ear Protective Devices; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006309:Hearing / Q000502:physiology*; D034381:Hearing Loss / Q000503:physiopathology*; D006320:Hearing Tests; D006801:Humans; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D011930:Reaction Time / Q000502:physiology; D013067:Speech Perception / Q000502:physiology; D055815:Young Adult