av E Holmer · Citerat av 2 — Human adults and human infants show a “perceptual magnet effect” for the prototypes of speech categories, monkeys do not. Perception & Psychophysics, 50(2) 

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9 Oct 2013 mainly on consonants, while that on non-native vowel perception has failed Language Magnet Model [Kuhl, 1991, 1992], and the Perceptual 

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The perceptual magnet effect is one of the earliest known language-specific phenomena arising in infant speech development. The effect is characterized by a warping of perceptual space near phonemic category centers. Previous explanations have been formulated within the theoretical framework of cognitive psychology. The notion ofaperceptual magnet was introduced.

Attention-to-dimension (A2D) models of perceptual learning assume that the dimensions that structure listeners ’ perceptual space are constant and that learning involves only the That is, no perceptual magnet effect was observed.

1 Mar 2018 Accordingly, perception learning can (and should) be explained without invoking mentalist concepts: Perceptual learning does not happen 

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28 Feb 2017 The NLM holds that L1 acquisition leads to the development of perceptual magnets, which cause close non-native sounds to be perceived as part 

Linguistic areas are geographic regions where languages share characteristics as a result of language contact and not as a consequence of shared inheritance, general linguistic tendencies, linguistic universals, or chance.1 Though there 2016-1-1 · The phoneme categories that result from this tuning process can be thought of as “attractor states” (Damper & Harnad, 2000) or “perceptual magnets” that “pull” the neural activity pattern toward a target position in phoneme perceptual space regardless of small variations in the acoustic input. The NLM theory predicts that the perceptual space is warped in the neighborhood of these perceptual magnets because a prototype attracts exemplars that fall within its zone of influence. The present paper introduces a very simple theoretical model that accounts for the perceptual-magnet effect as an emergent consequence of an exemplar-based phonetic memory. Perceptual learning about speech is thus constrained by spectral similarity between the input and established phonological categories, but within those limits, adjustments are thorough enough that even nonnative sounds can be treated fully as native sounds. (Show Context) Powered by: Phonetic category prototypes function like "perceptual magnets" for other stimuli in the category. They attract nearby members of the category, rendering nem more perceptually similar to the category prototype than would be expected on the basis of physical distance alone. 2021-1-3 · perceptual magnets o L1-Finnish listeners show the perceptual magnet effect for the Finnish /t/ and /tt/ categories (Heeren & Schouten, 2008) o But speakers of languages that lack (exclusively) length-based contrasts do not show any perceptual magnets along the length dimension: " no magnet for vowel tokens along the length patible with the concept of a perceptual magnet effect (PME) introduced by Kuhl [7] rather than with CP. According to [7], language acquisition warps the perceived distances between dif-ferent instances of a given category.

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Perceptual magnets

The effect is characterized by a warping of perceptual space near phonemic category perceptual magnet effect, contact-induced sound change, bilingualism, speech perception, prototype theory Abstract 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 themselves and neighboring stimuli in the same category. 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). perceptual magnets o L1-Finnish listeners show the perceptual magnet effect for the Finnish /t/ and /tt/ categories (Heeren & Schouten, 2008) o But speakers of languages that lack (exclusively) length-based contrasts do not show any perceptual magnets along the length dimension: " no magnet for vowel tokens along the length A class of selective attention models often applied to speech perception is used to study effects of training on the perception of an unfamiliar phonetic contrast. Attention-to-dimension (A2D) models of perceptual learning assume that the dimensions that structure listeners ’ perceptual space are constant and that learning involves only the That is, no perceptual magnet effect was observed. The MMN evoked potential (a preattentive, neurophysiologic index of auditory discrimination) revealed that despite equal mel differences between the stimulus pairs the MMN was largest for the prototype pair (i.e., the pair that had the lowest F 1 and highest F 2 values).

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. introduction of the perceptual-magnet notion extends the traditional view of prototype-based classification processes by accounting for non-linear effects. Nevertheless a prototype-based approach raises issues that are rooted in the very notion of prototype.
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magnets” (Kuhl, et al., 1992), and which may arise from self-organizing perceptual maps (Guenther & Gjaja, 1996). And there are effects of native language knowledge in the perception of a second

The acquisition of new speech sounds occurs on the background of the distribution of prototypes in acoustic/perceptual space. 2017-3-14 · perceptual magnets found in the input data, relying solely on facts about token distributions.


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28 Feb 2017 The NLM holds that L1 acquisition leads to the development of perceptual magnets, which cause close non-native sounds to be perceived as part 

Refinement of metre perception - training increases hierarchical metre an underlying hierarchical structure of perceptual accents from a sequence of tones. artikel92 beskriver de marksensorer (akustiska, seismiska och magnet används för Both types of knowledge, contextual and perceptual, can be represen. membranet, som hänger mellan de två polerna på en magnet, är av aluminium Perceptual Evaluation of Speech Quality (PESQ) är en standard innehållande  of the fact that the activity of this space might impinge my perception of it. cultural history, these accounts are magnets for alt-right activists. Beskrivning: Upprepad transkraniell magnetisk stimulering (rTMS) är en form av hjärnstimuleringsbehandling som använder en magnet för att rikta in sig på och  dependency ratio in Norrbotten (39.5% in 2019) is 6 perceptual points over Västerbotten and and neodymium from permanent magnets) minerals and metals.

2018-2-6 · The perceptual phenomenon of the occurrence of poor sensitivity near best exemplars has been called the per-ceptual magnet effect (Kuhl, 1991); the perceptual space is shrunk near best exemplars, effectively drawing neighbor-ing stimuli toward best-exemplar locations. As with the phoneme boundary effect, the perceptual magnet effect

Try these magnetic marble mazes. This printable marble game uses magnets to  Magnetism Detection/Magnetism Perception/Magnetism Sense/Magnetism Sensing This is the ability to physically and/or psychically perceive magnetic fields. 8 Dec 2015 Professor Eric Laithwaite: Magnetic River 1975.

The within-category account involves speech sound prototypes that act as perceptual magnets, pulling the perception of speech sounds toward them (Kuhl et al., 1992). The idea of a perceptual magnet is formalized in Equation 7 , where speech sounds are perceived based on … 2013-11-23 · "perceptual magnets" for other stimuli in the category. They attract nearby members of the category, rendering nem more perceptually similar to the category prototype than would be expected on the basis of physical distance alone. Nonprototype stimuli from the category. do. not function in this way. Moreover, by 6 months of age, infants 2000-2-15 · The perceptual magnet effect is not specific to speech prototypes: new evidence from music categories.