The Effects of Hearing Protectors on Auditory Localization: Evidence From Audio-Visual Target Acquisitioi

Response times (RT) in an audio-visual target acquisition task were collected from 3 participants while wearing either circumaural earmuffs, foam earplugs, or no hearing protection. Analyses revealed that participants took significantly longer to locate and identify an audio-visual target in both hearing protector conditions than they did in the unoccluded condition, suggesting a disturbance of the cues used by listeners to localize sounds in space. RTs were significantly faster in both hearing protector conditions than in a non-audio control condition, indicating that auditory localization was not completely disrupted. Results are discussed in terms of safety issues involved with wearing hearing protectors in an occupational environment.

[1]  Robert S. Bolia,et al.  Effects of Hearing Protectors on Auditory Localization in Azimuth and Elevation , 2001, Hum. Factors.

[2]  Nancy L. Vause,et al.  Effects of Earplugs and Protective Headgear on Auditory Localization Ability in the Horizontal Plane , 1999, Hum. Factors.

[3]  G R Atherley,et al.  Effect of ear-muffs on the localization of sound under reverberant conditions. , 1971, Proceedings of the Royal Society of Medicine.

[4]  Robert S. Bolia,et al.  Aurally Aided Visual Search in Three-Dimensional Space , 1999, Hum. Factors.

[5]  Noble Wg.  Earmuffs, exploratory head movements, and horizontal and vertical sound localization. , 1981 .

[6]  F. Wightman,et al.  The dominant role of low-frequency interaural time differences in sound localization. , 1992, The Journal of the Acoustical Society of America.

[7]  S. Abel,et al.  Sound localization. The interaction of aging, hearing loss and hearing protection. , 1996, Scandinavian audiology.

[8]  Paul M. Hofman,et al.  Relearning sound localization with new ears , 1998, Nature Neuroscience.

[9]  Richard L. McKinley,et al.  Aurally Aided Visual Search under Virtual and Free-Field Listening Conditions , 1996, Hum. Factors.

[10]  G. Atherley,et al.  Effect of ear-defenders (ear-muffs) on the localization of sound , 1970, British journal of industrial medicine.

[11]  T. Anderson,et al.  Binaural and spatial hearing in real and virtual environments , 1997 .

[12]  W G Noble,et al.  Theoretical and practical implications of the effects of hearing protection devices on localization ability. , 1972, Acta oto-laryngologica.