Advertisement

Modeling Physiological and Psychophysical Responses to Precedence Effect Stimuli

  • Jing Xia
  • Andrew Brughera
  • H. Steven Colburn
  • Barbara Shinn-Cunningham
Conference paper

Abstract

Many perceptual and physiological studies of sound localization have explored the precedence effect (PE), whereby two dichotic clicks coming from different directions and arriving at the ears close together in time are perceived as one event coming from the location of the click arriving first. Here, we used a computational model of low-frequency inferior colliculus (IC) neurons to account for both physiological and psychophysical responses to PE stimuli. In the model, physiological suppression of the ITD-tuned lagging response depends on the inter-stimulus delay (ISD) between the leading and lagging sound as well as the ITD of the lead. Psychophysical predictions generated from a population of model IC neurons estimate the perceived location of the lagging click as near that of the lead click at short ISDs, consistent with subjects perceiving both lead and lag as coming from the lead location. As ISD increases, the estimated location of the lag becomes closer to the true lag location, consistent with listeners perceiving two sounds coming from separate locations. Together, these physiological and perceptual simulations suggest that ITD-dependent suppression in IC neurons can explain the behavioral phenomenon known as the PE.

Keywords

Computational model Inferior colliculus Localization dominance Sound localization model 

References

  1. Brughera AR, Stutman ER, Carney LH, Colburn HS (1996) A model with excitation and inhibition for cells in the medial superior olive. Aud Neurosci 2:219–233Google Scholar
  2. Cai H, Carney LH, Colburn HS (1998) A model for binaural response properties of inferior colliculus neurons. I. A model with ITD-sensitive excitatory and inhibitory inputs. J Acoust Soc Am 103:475–493PubMedCrossRefGoogle Scholar
  3. Carney LH (1993) A model for the responses of low-frequency auditory-nerve fibers in cat. J Acoust Soc Am 93:401–417PubMedCrossRefGoogle Scholar
  4. Carney LH, Yin TCT (1989) Responses of low-frequency cells in the inferior colliculus to interaural time differences of clicks: excitatory and inhibitory components. J Neurophysiol 62:144–161PubMedGoogle Scholar
  5. Colburn HS, Isabelle SK (1992) Models of binaural processing based on neural patterns in the medial superior olive. In: Cazals Y, Demaney L, Horner K (eds) Auditory physiology and perception. Pergamon, Oxford, pp 539–545Google Scholar
  6. Fitzpatrick DC, Kuwada S, Batra R, Trahiotis C (1995) Neural responses to simple simulated echoes in the auditory brain stem of the unanesthetized rabbit. J Neurophysiol 74:2469–2486PubMedGoogle Scholar
  7. Hartung K, Trahiotis C (2001) Peripheral auditory processing and investigations of the “precedence effect” which utilizes successive transient stimuli. J Acoust Soc Am 110:1505–1513PubMedCrossRefGoogle Scholar
  8. Kuwada S, Yin TCT (1983) Binaural interaction in low-frequency neurons in inferior colliculus of the cat. I. Effects of long interaural delays, intensity, and repetition rate on interaural delay function. J Neurophysiol 50:981–999PubMedGoogle Scholar
  9. Lindemann W (1986) Extension of a binaural cross-correlation model by contralateral inhibition. II. The law of the first wave front. J Acoust Soc Am 80:1623–1630PubMedCrossRefGoogle Scholar
  10. Litovsky RY, Shinn-Cunningham BG (2001) Investigation of the relationship among three common measures of precedence: fusion, localization dominance, and discrimination suppression. J Acoust Soc Am 109:346–358PubMedCrossRefGoogle Scholar
  11. Litovsky RY, Yin TCT (1998a) Physiological studies of the precedence effect in the inferior colliculus of the cat. I. Correlates of psychophysics. J Neurophysiol 80:1285–1301PubMedGoogle Scholar
  12. Litovsky RY, Yin TCT (1998b) Physiological studies of the precedence effect in the inferior colliculus of the cat. II. Neural mechanisms. J Neurophysiol 80:1302–1316PubMedGoogle Scholar
  13. Loftus WC, Bishop DC, Saint Marie RL, Oliver DL (2004) Organization of binaural excitatory and inhibitory inputs to the inferior colliculus from the superior olive. J Comp Neurol 472(3):330–344PubMedCrossRefGoogle Scholar
  14. Rothman SR, Young ED, Manis PB (1993) Convergence of auditory nerve fibers onto bushy cells in the ventral cochlear nucleus: implications of a computational model. J Neurophysiol 70:2562–2583PubMedGoogle Scholar
  15. Shinn-Cunningham BG, Kawakyu K (2003) Neural representation of source direction in reverberant space. In: Proceedings of the 2003 IEEE workshop on applications of signal processing to audio and acoustics, New Paltz, NY, October 2003, pp 79–82Google Scholar
  16. Shinn-Cunningham BG, Zurek PM, Durlach NI (1993) Adjustment and discrimination measurements of the precedence effect. J Acoust Soc Am 93:2923–2932PubMedCrossRefGoogle Scholar
  17. Tollin DJ, Populin LC, Yin TCT (2004) Neural correlates of the precedence effect in the inferior colliculus of behaving cats. J Neurophysiol 92:3286–3297PubMedCrossRefGoogle Scholar
  18. Wallach H, Newman EB, Rosenzweig MR (1949) The precedence effect in sound localization. Am J Psychol 52:315–336CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Jing Xia
  • Andrew Brughera
  • H. Steven Colburn
  • Barbara Shinn-Cunningham
    • 1
  1. 1.Department of Biomedical EngineeringBoston UniversityBostonUSA

Personalised recommendations