Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"categorical perception"”.
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The Relationship Between Phonological Short-Term Memory (pSTM) and Categorical Perception of Speech
… features into discrete phoneme categories (categorical perception). The cognitive demand associated with categorisation depends on the degree of ambiguity in the signal, and on the perceptual acuity of the individual listener. Prior research suggests that phonological short-term memory …
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N200 and P300 Evoked by Stimuli Straddling Category Boundary in Lexical Context
… N200 and P300 have been reported to reflect the categorical perception of speech. The purpose of the present study is to explore whether these ERP components reflect the influence of lexical context on categorical perception. Findings may provide evidence for bottom-up or top-down processing of …
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The Effect of Linguistic Experience on the Perception of Pitch Contour
Studies conducted in the area of tone perception suggest that experience with tonal features such as pitch height, direction, duration, and contour in the L1 of the listener affect the perception of such features. This study consists of a categorical perception experiment to investigate whether …
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Categorical organization and machine perception of oscillatory motion patterns
… values. We develop a computational model of categorical perception of these motion patterns based on their inherent structural regularity. The model proposes the initial construction of a hierarchical ordering of the model parameters to partition them into sub-categorical specializations. …
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Brain plasticity in speech training in native English speakers learning mandarin tones
… a training-induced shift toward more native-like categorical perception of the Mandarin lexical tones. Analysis of the Mismatch Negativity (MMN) responses in the ERP data revealed increased amplitude and decreased latency for pre-attentive processing of across-category discrimination as a result …
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Assessing functional links between speech production and perception in multilingual speakers
… between speech production and speech perception capacities is highly debated. The picture is complicated further by studies of second language acquisition, where development of speech perception is not always accompanied by proportional gains in speech production, and vice versa. This …
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An experimental study of consonant gemination in Iraqi colloquial Arabic
… roles played by the segmental durations in the perception of single versus geminate consonants in I. C. Arabic. The theory of 'categorical perception' is then discussed in relation to our data. Chapter Five provides a palatographic evidence of the distinctions between geminate consonants and …
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Effects of Aging and Spectral Shaping on the Sub-cortical (Brainstem) Differentiation of Contrastive Stop Consonants
… functions in order to quantify stimuli perception. Speech ABR peak amplitudes and latencies and stop consonant differentiation scores were measured for 6 stimuli (3 unshaped stimuli and 3 shaped stimuli).</p> <p>Summary of Findings: Older adults exhibited more robust categorical …
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Variability in cross-dialectal production and perception of contrasting phonemes: the case of the alveolar-retroflex contrast in Beijing and Taiwan Mandarin
… task and a goodness rating task, the categorical and gradient modes of alveolar-retroflex perception in different vowel contexts are investigated for listeners of both dialects. Results of the production study indicate that the acoustic characterization of Beijing vs. Taiwan Mandarin …