Experience-Based Auditory Map Formation and the Perceptual Magnet Effect

  • Marin N. Gjaja
  • Frank H. Guenther

Abstract

The perceptual magnet effect (e.g., Kuhl, 1991, 1995) is one of the most actively discussed topics in the recent speech perception literature. The effect is characterized by a warping of perceptual space such that acoustic patterns near phonemic category centers are perceived as closer together than equally spaced acoustic patterns that are further away from phonemic category centers. This language-specific effect is evident in infants by six months of age and is maintained through adulthood (Kuhl, 1991). In this paper we propose an explanation for the perceptual magnet effect using a self-organizing feature map neural network (e.g., von der Malsburg, 1973; Kohonen, 1982). This model is a component of a larger computational modeling framework of speech development, perception, and production called DIVA (Guenther, 1995).

Keywords

Synaptic Weight Magnet Effect Population Vector Neural Representation Perceptual Space 
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References

  1. [1]
    Georgopoulos. A.P., Kalaska, J.F., Crutcher, M.D., Caminiti, R., and Massey, J.T. (1984). The representation of movement direction in the motor cortex: Single cell and population studies. In Edelman, G.M., Gall, W.E., and Cowan, W.M. (eds.): Dynamic aspects of cortical function. New York: Wiley.Google Scholar
  2. [2]
    Guenther, F.H. (1995). Speech sound acquisition, coarticulation, and rate effects in a neural network model of speech production. Psychological Review, 102, pp. 594–621.PubMedCrossRefGoogle Scholar
  3. [3]
    Grossberg, S. (1976). Adaptive pattern classification and universal recoding: I. Parallel development and coding of neural feature detectors. Biological Cybernetics, 23, pp. 121–134.PubMedCrossRefGoogle Scholar
  4. [4]
    Kohonen, T. (1982). Self-organized formation of topologically correct feature maps. Biological Cybernetics, 43, pp. 59–69.CrossRefGoogle Scholar
  5. [5]
    Kuhl, P.K. (1991). Human adults and human infants show a `perceptual magnet effect’ for the prototypes of speech categories, monkeys do not. Perception & Psychophysics, 50, pp. 93–107.CrossRefGoogle Scholar
  6. [6]
    Kuhl, P.K. (1995). Mechanisms of developmental change in speech and language. In Elenius, K., and Branderud, P. (eds.): Proceedings of the XI11th International Congress of Phonetic Sciences, vol. 2, pp. 132–139. Stockholm: KTH and Stockholm University.Google Scholar
  7. [7]
    von der Malsburg, C. (1973). Self-organization of orientation sensitive cells in the striata cortex. Kybernetik, 14, pp. 85–100.PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Marin N. Gjaja
    • 1
  • Frank H. Guenther
    • 1
  1. 1.Department of Cognitive and Neural SystemsBoston UniversityBostonUSA

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