title: Selective auditory attention and silence elicit auditory hallucination in a nonclinical sample.
abstract: BACKGROUND
  Several investigations have shown that the occurrence of auditory hallucinations (AH) is not restricted to neuropsychiatric patients. The aim of this study is to analyse the effect of attention and sustained silence on the emergence of AH in a nonclinical sample.
  
  
  METHODS
  Sitting in a silent sound booth, 66 adults were studied under different attention demands and then where asked about their auditory perception.
  
  
  RESULTS
  While performing a Hanoi Tower in silence, 10.6% of the individuals had hallucination-like perceptions (music, voices, and others). This rate decreased to 6.0% during a visual attention task, but highly increased to 36.4% during auditory attention.
  
  
  CONCLUSIONS
  Auditory hallucinations may occur in a nonclinical population in a silent environment. Concomitant auditory attention increases both the quantity and the quality of those perceptions.
authors.affiliation: keila@gabengenharia.com.br
authors.forename: Keila Alessandra Baraldi
authors.initials: KA
authors.lastname: Knobel
authors.forename: Tanit Ganz
authors.initials: TG
authors.lastname: Sanchez
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D000368:Aged; D001288:Attention / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D004777:Environment; D005260:Female; D006212:Hallucinations / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D009622:Noise; D014796:Visual Perception / Q000502:physiology; D055815:Young Adult