The contribution of two ears to the perception of vertical angle in sagittal planes

The Journal of the Acoustical Society of America
M Morimoto

Abstract

Because the input signals to the left and right ears are not identical, it is important to clarify the role of these signals in the perception of the vertical angle of a sound source at any position in the upper hemisphere. To obtain basic findings on upper hemisphere localization, this paper investigates the contribution of each pinna to the perception of vertical angle. Tests measured localization of the vertical angle in five planes parallel to the median plane. In the localization tests, the pinna cavities of one or both ears were occluded. Results showed that pinna cavities of both the near and far ears play a role in determining the perceived vertical angle of a sound source in any plane, including the median plane. As a sound source shifts laterally away from the median plane, the contribution of the near ear increases and, conversely, that of the far ear decreases. For saggital planes at azimuths greater than 60 degrees from midline, the far ear no longer contributes measurably to the determination of vertical angle.

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Citations

Jun 8, 2010·Journal of the Association for Research in Otolaryngology : JARO·Duck O KimShigeyuki Kuwada
Jun 17, 2005·The Journal of the Acoustical Society of America·Barbara G Shinn-CunninghamTara J Martin
Jun 8, 2002·The Journal of the Acoustical Society of America·Ewan A Macpherson, John C Middlebrooks
Jul 9, 2004·The Journal of the Acoustical Society of America·Craig JinAndré van Schaik
Apr 23, 2004·The Journal of the Acoustical Society of America·Abhijit Kulkarni, H Steven Colburn
Jul 12, 2012·The Journal of the Acoustical Society of America·Bo-Sun Xie
Jul 7, 2007·The Journal of the Acoustical Society of America·Densil Cabrera, Masayuki Morimoto
Jun 8, 2007·The Journal of the Acoustical Society of America·Ewan A Macpherson, Andrew T Sabin
Aug 7, 2014·The Journal of the Acoustical Society of America·Virginie DurinSridhar Kalluri
Aug 7, 2014·The Journal of the Acoustical Society of America·Robert BaumgartnerBernhard Laback
Nov 11, 2009·Hearing Research·Peter Xinya Zhang, William M Hartmann
Oct 27, 2006·Journal of Neurophysiology·Marc M Van Wanrooij, A John Van Opstal
Jun 29, 2007·Journal of Neurophysiology·Jennifer K BizleyAndrew J King
Nov 9, 2018·The Journal of the Acoustical Society of America·Florian DenkBirger Kollmeier
May 16, 2019·Trends in Hearing·Sebastian A AusiliMarc M van Wanrooij
May 4, 2017·The Journal of the Acoustical Society of America·Thomas JoubaudChristophe Langrenne
Feb 23, 2020·Experimental Brain Research·Giuseppe RabiniFrancesco Pavani
Jun 18, 2017·The Journal of the Acoustical Society of America·Zamir Ben-HurBoaz Rafaely

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