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General adaptation to accented English: Speech intelligibility unaffected by perceived source of non-native accent.
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In: The Journal of the Acoustical Society of America, vol 149, iss 4 (2021)
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The Delta F method of vocal tract length normalization for vowels
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In: LABORATORY PHONOLOGY, vol 11, iss 1 (2020)
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Sensorimotor adaptation of speech depends on the direction of auditory feedback alteration.
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In: The Journal of the Acoustical Society of America, vol 148, iss 6 (2020)
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IN MEMORIAM JOHN J. OHALA (1941-2020)
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In: JOURNAL OF THE INTERNATIONAL PHONETIC ASSOCIATION, vol 50, iss 3 (2020)
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Costs and Cues in the Auditory Comprehension of Code-switching
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Shen, Alice. - : eScholarship, University of California, 2020
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The ΔF method of vocal tract length normalization for vowels
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In: Laboratory Phonology: Journal of the Association for Laboratory Phonology; Vol 11, No 1 (2020); 10 ; 1868-6354 (2020)
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Sensorimotor adaptation of speech depends on the direction of auditory feedback alteration
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In: J Acoust Soc Am (2020)
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Word retrieval across the biomarker-confirmed Alzheimer’s disease syndromic spectrum
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In: Neuropsychologia (2020)
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Abstract:
Alzheimer’s disease (AD) is now conceptualized as a biological entity defined by amyloid and tau deposition and neurodegeneration, with heterogeneous clinical presentations. With the aid of in vivo biomarkers, clinicians are better poised to examine clinical syndromic variability arising from a common pathology. Word retrieval deficits, measured using verbal fluency and confrontation naming tests, are hallmark features of the early clinical stages of the amnestic presentations of AD, specifically in category fluency and naming with relatively spared letter fluency. As yet, there is no consensus regarding performance on these tests in atypical clinical phenotypes of AD, including posterior cortical atrophy (PCA) and logopenic primary progressive aphasia (lvPPA), in individuals who are amyloid-positive (Aβ+) but present with different clinical profiles and patterns of neurodegeneration compared to amnestic AD. The goal of the current study is to determine how Aβ+ individuals across the syndromic spectrum of AD perform on three different word retrieval tasks. A secondary goal is to determine the neuroanatomical substrates underlying word retrieval performance in these Aβ+ individuals. Thirty-two Aβ+ participants with the amnestic presentation, 16 with Aβ+ PCA, 22 with Aβ+ lvPPA, and 99 amyloid-negative (Aβ-) control participants were evaluated with verbal fluency and visual confrontation naming tests as well as high-resolution MRI. The Aβ+ patient groups were rated at very mild or mild levels of severity (CDR 0.5 or 1) and had comparable levels of global cognitive impairment (average MMSE = 23.7 ± 3.9). Behaviorally, we found that the word retrieval profile of PCA patients is comparable to that of amnestic patients, characterized by intact letter fluency but impaired category fluency and visual confrontation naming, while lvPPA patients demonstrated impairment across all tests of word retrieval. Across all AD variants, we observed that letter fluency was associated with cortical thickness in prefrontal, central precuneus, lateral parietal and temporal cortex, while category fluency and naming were associated with cortical thickness in left middle frontal gyrus, posterior middle temporal gyrus, and lateral parietal cortex. Visual confrontation naming was uniquely associated with atrophy in inferior temporal and visual association cortex. We conclude that a better understanding of the word retrieval profiles and underlying neurodegeneration across the AD syndromic spectrum will help improve interpretation of neuropsychological profiles with regard to the localization of neurodegeneration, particularly in the atypical AD variants.
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URL: http://www.ncbi.nlm.nih.gov/pubmed/32057937 https://doi.org/10.1016/j.neuropsychologia.2020.107391 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085933/
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The Latin American Spanish version of the Face-Name Associative Memory Exam is sensitive to cognitive and pathological changes in preclinical autosomal dominant Alzheimer’s disease
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In: Alzheimers Res Ther (2020)
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Speaker-normalized sound representations in the human auditory cortex.
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In: Nature communications, vol 10, iss 1 (2019)
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Individual differences in speech production: What is "phonetic substance"?
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In: UC Berkeley PhonLab Annual Report, vol 15, iss 1 (2019)
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Head correction of point tracking data
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In: UC Berkeley PhonLab Annual Report, vol 15, iss 1 (2019)
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Visual cognition in non-amnestic Alzheimer's disease: Relations to tau, amyloid, and cortical atrophy
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Speaker-normalized sound representations in the human auditory cortex
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Speaker Normalization in Speech Perception
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In: Johnson, Keith; & Sjerps, Matthias. (2018). Speaker Normalization in Speech Perception. UC Berkeley Phonology Lab Annual Reports, 14(1). Retrieved from: http://www.escholarship.org/uc/item/2fc6x1ph (2018)
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Vocal Tract Length Normalization
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In: Johnson, Keith. (2018). Vocal Tract Length Normalization. UC Berkeley Phonology Lab Annual Reports, 14(1). Retrieved from: http://www.escholarship.org/uc/item/16c753jz (2018)
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Speech Production Patterns in Producing Linguistic Contrasts are Partly Determined by Individual Differences in Anatomy
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In: Johnson, Keith. (2018). Speech Production Patterns in Producing Linguistic Contrasts are Partly Determined by Individual Differences in Anatomy. UC Berkeley Phonology Lab Annual Reports, 14(1). Retrieved from: http://www.escholarship.org/uc/item/9r9349j5 (2018)
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Identifying Classroom Management Strategies by Focusing on Diversity and Inclusion
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In: ETSU Faculty Works (2018)
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