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Brainstem-cortical functional connectivity for speech is differentially challenged by noise and reverberation
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Phase Entrainment of Brain Oscillations Causally Modulates Neural Responses to Intelligible Speech
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Randomized control trial of an internet-based parenting intervention for mothers of infants
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In: Early Child Res Q (2018)
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Talking Tots and the Terrible Twos: Early Language and Disruptive Behavior in Toddlers
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An Experimental Test of the Two-Dimensional Theory of Cultural Sensitivity in Health Communication
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Mapping the Growth of Heterogeneous Forms of Externalizing Problem Behavior between Early Childhood and Adolescence: A Comparison of Parent and Teacher Ratings
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Extremely preterm children exhibit increased interhemispheric connectivity for language: findings from fMRI-constrained MEG analysis
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Promoting Collaborative Classrooms: The Impacts of Interdependent Cooperative Learning on Undergraduate Interactions and Achievement
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Functional Networks Underlying Item and Source Memory: Shared and Distinct Network Components and Age-Related Differences
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Inferior Frontal Cortex Contributions to the Recognition of Spoken Words and Their Constituent Speech Sounds
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Abstract:
Speech perception and comprehension are often challenged by the need to recognize speech sounds that are degraded or ambiguous. Here, we explore the cognitive and neural mechanisms involved in resolving ambiguity in the identity of speech sounds using syllables that contain ambiguous phonetic segments (e.g., intermediate sounds between /b/ and /g/ as in “blade” and “glade”). We used an audio-morphing procedure to create a large set of natural sounding minimal pairs that contain phonetically ambiguous onset or offset consonants (differing in place, manner, or voicing). These ambiguous segments occurred in different lexical contexts (i.e., in words or pseudowords, such as blade–glade or blem–glem) and in different phonological environments (i.e., with neighboring syllables that differed in lexical status, such as blouse–glouse). These stimuli allowed us to explore the impact of phonetic ambiguity on the speed and accuracy of lexical decision responses (Experiment 1), semantic categorization responses (Experiment 2), and the magnitude of BOLD fMRI responses during attentive comprehension (Experiment 3). For both behavioral and neural measures, observed effects of phonetic ambiguity were influenced by lexical context leading to slower responses and increased activity in the left inferior frontal gyrus for high-ambiguity syllables that distinguish pairs of words, but not for equivalent pseudowords. These findings suggest lexical involvement in the resolution of phonetic ambiguity. Implications for speech perception and the role of inferior frontal regions are discussed.
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Keyword:
Article
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URL: http://www.ncbi.nlm.nih.gov/pubmed/28129061 https://doi.org/10.1162/jocn_a_01096 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6635126/
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Accent modulates access to word meaning: Evidence for a speaker-model account of spoken word recognition
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32 |
Evidence for causal top-down frontal contributions to predictive processes in speech perception
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33 |
Machine Learning for Identifying Emotional Expression in Text: Improving the Accuracy of Established Methods
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In: J Technol Behav Sci (2017)
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Recovery of orthographic processing after stroke: A longitudinal fMRI study
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Diverse Families’ Experiences with HPV Vaccine Information Sources: A Community-Based Participatory Approach1
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Dopaminergic Genetic Polymorphisms Predict Rule-Based Category Learning
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Target templates specify visual, not semantic, features to guide search: A marked asymmetry between seeking and ignoring
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Relationship of Maternal Psychological Distress Class to Later Mother-Infant Interaction, Home Environment, and Infant Development in Preterm Infants
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Understanding "Agency” in the Translation of a Health Promotion Program
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Transdiagnostic Motivational Enhancement Therapy to Reduce Treatment Attrition: Use in Emerging Adults
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