Document Detail

The effect of head movement and head positioning on sound field audiometry.
MedLine Citation:
PMID:  22486395     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Positioning and maintaining the subject's head at the calibration point (CP) of the sound field (SF) during SF assessment remains a challenge. The purpose of this study was to investigate the sound pressure level (SPL) at head positions likely to be encountered in routine audiological practice.
DESIGN: Eight National Health Service SF clinics were used to obtain SPL measurements. Part 1 of the study investigated SPL variability at positions around the CP (0.15 m and 0.30 m). Parts 2 and 3 of the study, investigated the SPL at two typical head heights of the infant population.
STUDY SAMPLE: Only sound field measures were obtained.
RESULTS: Part 1: 32% and 40% of measurements of SPL around the CP were >2 dB different from the SPL at the CP (0.15 m and 0.30 m). Parts 2 and 3: 55% and 38% of measurements of SPL, at the two infant head heights, were >2 dB from the SPL at the CP.
CONCLUSIONS: Variability in SPL, due to head movement, is to be expected when performing SF audiometry. Furthermore, the typical head heights of infants will introduce additional variability, unless the position of the CP is chosen carefully.
Paul Shaw; Hannah Greenwood
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Publication Detail:
Type:  Journal Article     Date:  2012-04-10
Journal Detail:
Title:  International journal of audiology     Volume:  51     ISSN:  1708-8186     ISO Abbreviation:  Int J Audiol     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-05-15     Completed Date:  2012-09-10     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  101140017     Medline TA:  Int J Audiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  499-504     Citation Subset:  IM    
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MeSH Terms
Acoustic Stimulation
Audiometry* / instrumentation,  standards
Auditory Pathways / physiology*
Head Movements*
Reproducibility of Results

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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