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Human adults and human infants show a perceptual magnet effect for the prototypes of speech categories, monkeys do not. Perception & Psychophysics , 50 , 93 –107. Kuhl , P. & Iverson , P. ( 1995 ). The present study investigated the existence of a ‘‘perceptual magnet’’ effect [Kuhl, Percept.
Perception and Psychophysics, 62, 874–886. Kuhl, P. K. (2000). A new view of language acquisition. Proceedings of the National Academy of Sciences, 97, 11850–11857.
The present study used the methodology of Iverson and Kuhl [P.
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The phase. During the prodromal phase the person can have strange perceptual measures, such as Magnetic Resonance Imaging (MRI), have shown a number of investigated the accuracy of schizophrenia patients' perception of their own. functional magnetic resonance imaging. HKD righeterna kan gälla visuell, auditiv, taktil eller kinetisk perception, och tor perceptual dysfunction (MPD) för dem med motoriska och/eller per- Bell och Harpers klassiska bok ”Child effects on adults” (Bell och tal (”self-directed speech”), är något de har speciellt svårt för.
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Language Magnet Model [Kuhl, 1991, 1992], and the Perceptual Assimilation Model. Keywords: perceptual magnet effect, categorical perception, speech magnet effect involves reduced discriminability of speech sounds near phonetic category.
The question of whether sensitivity peaks at vowel boundaries (i.e., phoneme boundary effects) and sensitivity minima near excellent category exemplars (i.e., perceptual magnet effects) stem from the same stage of perceptual processing was examined in two experiments. (Lacerda, 1995). The term perceptual magnet effect refers to the perceptual phenomenon of sensitivity minima near best exemplars, and the exact cause of the perceptual mag-net effect is unknown. Empirical Distinctions Research on the perceptual magnet effect has primar-ily been concerned with establishing the correlation be-
Perceptual magnet and phoneme boundary effects in speechperception: Do theyarise from a commonmechanism?
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Psychophysical phenomena such as categorical perception and the perceptual magnet effect indicate that our auditory perceptual spaces are warped for some stimuli. This paper investigates the effects of two different kinds of training on auditory perceptual space. In addition, the perceptual magnet effect shows several qualitative similarities to categorical effects in perceptual domains outside of language, as vowel perception is continuous rather than sharply categorical (Fry, Abramson, Eimas, & Liberman, 1962) and the degree of category influence can vary substantially across testing conditions (Gerrits & Schouten, 2004).
Functional magnetic resonance imaging. ICF involvement of attentional capacity for speech perception involves the executive functions selective attention suppresses interfering modulated noise at the perceptual level and may.
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near a boundary between vowels) and less detectable are near a good examplar of a vowel PERCEPTUAL MAGNET EFFECT FOR SPEECH PROTOTYPES 95 asserts that these three vowels are acoustically more stabile than other vowels. Second, previous data from our lab had shown that infants correctly categorize perceptually diverse instances of hi!
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Keywords: perceptual magnet effect; speech perception It has long been known that categories inﬂuence percep-tion, especially in the domain of speech sounds (Liberman, Harris, Hoffman, & Grifﬁth, 1957). Similar categorical ef-fects have been described in other domains, including color perception (Davidoff, Davies, & Roberson, 1999) and ar- THE PERCEPTUAL-MAGNET EFFECT: AN EMERGENT CONSEQUENCE OF EXEMPLAR-BASED PHONETIC MEMORY Francisco Lacerda Institute of Linguistics, Stockholm University, S-106 91 Stockholm, Sweden ABSTRACT This paper uses a mathematical model of infant speech perception to examine the assumptions and consequences of Kuhl's Native Language Magnet theory (NLM). Mapping the perceptual magnet effect for speech using signal detection theory and multidimensional scaling February 1995 The Journal of the Acoustical Society of America 97(1):553-62 CiteSeerX - Scientific documents that cite the following paper: Perceptual magnet and phoneme boundary effects in speech perception: do they arise from a common mechanism? Recent auditory research has raised fundamental questions about the perceptual magnet effect (PME), where discrimination performance is poorer for stimuli that approach best exemplars of a phonetic category. It has been suggested that the effect The perceptual magnet effect describes an increased generalization capability for the perception of vowels, if the perceived vowels are prototypical. We here propose an unsupervised, adaptive neural network model which allows to control the relation between stimulus density and generalization capability, and which can account for the perceptual magnet effect.
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979-1000. Kuhl, P., & Iverson, P. (1995). Linguistic Experience and the “Perceptual Magnet Effect”. In W. Strange (ed.) Speech Perception and linguistic experience: issues in cross-language research. Keywords: perceptual magnet effect; speech perception It has long been known that categories inﬂuence percep-tion, especially in the domain of speech sounds (Liberman, Harris, Hoffman, & Grifﬁth, 1957). Similar categorical ef-fects have been described in other domains, including color perception (Davidoff, Davies, & Roberson, 1999) and ar- THE PERCEPTUAL-MAGNET EFFECT: AN EMERGENT CONSEQUENCE OF EXEMPLAR-BASED PHONETIC MEMORY Francisco Lacerda Institute of Linguistics, Stockholm University, S-106 91 Stockholm, Sweden ABSTRACT This paper uses a mathematical model of infant speech perception to examine the assumptions and consequences of Kuhl's Native Language Magnet theory (NLM).
In these studies, AX-discrimination tasks purportedly reveal that discriminability of speech sounds from a single category varies with judged phonetic ‘‘goodness’’ of the sounds. However, one possible confound is that category membership is Apparently, the perceptual systems of CSEs may eventually adapt to accomodate new sounds at the cost of losing perceptual sensitivity to some of the native phonetic contrasts. 1. INTRODUCTION Infant speech perception has been explored extensively by Khul and cols.  who introduced a model known as the “perceptual magnet effect”. Testing the perceptual magnet effect in monolinguals and bilinguals by Michael C. Stern Advisor: Kyle Gorman Previous research has demonstrated an apparent warping of the perceptual space whereby the best exemplars or ‘prototypes’ of speech sound categories minimize the perceptual distance between Iverson, P. (2005). Perceptual interference and learning in speech perception.