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Speech understanding

Julie Case, Maria I Grigos
Purpose: Articulatory control and speech production accuracy were examined in children with childhood apraxia of speech (CAS) and typically developing (TD) controls within a novel word-learning task to better understand the influence of planning and programming deficits in the production of unfamiliar words. Method: Participants included 16 children between the ages of 5 and 6 years (8 CAS, 8 TD). Short- and long-term changes in lip and jaw movement, consonant and vowel accuracy, and token-to-token consistency were measured for 2 novel words that differed in articulatory complexity...
October 17, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
Rebecca Carroll, Verena Uslar, Thomas Brand, Esther Ruigendijk
OBJECTIVE: The authors aimed to determine whether hearing impairment affects sentence comprehension beyond phoneme or word recognition (i.e., on the sentence level), and to distinguish grammatically induced processing difficulties in structurally complex sentences from perceptual difficulties associated with listening to degraded speech. Effects of hearing impairment or speech in noise were expected to reflect hearer-specific speech recognition difficulties. Any additional processing time caused by the sustained perceptual challenges across the sentence may either be independent of or interact with top-down processing mechanisms associated with grammatical sentence structure...
September 28, 2016: Ear and Hearing
Sari Ylinen, Alexis Bosseler, Katja Junttila, Minna Huotilainen
The ability to predict future events in the environment and learn from them is a fundamental component of adaptive behavior across species. Here we propose that inferring predictions facilitates speech processing and word learning in the early stages of language development. Twelve- and 24-month olds' electrophysiological brain responses to heard syllables are faster and more robust when the preceding word context predicts the ending of a familiar word. For unfamiliar, novel word forms, however, word-expectancy violation generates a prediction error response, the strength of which significantly correlates with children's vocabulary scores at 12 months...
October 16, 2016: Developmental Science
Stefan Elmer
Until now, several branches of research have fundamentally contributed to a better understanding of the ramifications of bilingualism, multilingualism, and language expertise on psycholinguistic-, cognitive-, and neural implications. In this context, it is noteworthy to mention that from a cognitive perspective, there is a strong convergence of data pointing to an influence of multilingual speech competence on a variety of cognitive functions, including attention, short-term- and working memory, set shifting, switching, and inhibition...
2016: Frontiers in Human Neuroscience
T Steffens
BACKGROUND: The impact of hearing loss on the ability to participate in verbal communication can be directly quantified through the use of speech audiometry. Advances in technology and the associated reduction in background noise interference for hearing aids have allowed the reproduction of very complex acoustic environments, analogous to those in which conversations occur in daily life. These capabilities have led to the creation of numerous advanced speech audiometry measures, test procedures and environments, far beyond the presentation of isolated words in an otherwise noise-free testing booth...
October 14, 2016: HNO
Fazlurrahman Khan, Sandra Folarin Oloketuyi
Neurodegenerative diseases are considered a serious life-threatening issue regardless of age. Resulting nerve damage progressively affects important activities, such as, movement, coordination, balance, breathing, speech, and the functioning of vital organs. Reports on the subject have concluded that neurodegenerative disease can be caused by mutations of susceptible genes, alcohol consumption, toxins, chemicals, and other unknown environmental factors. Although several diagnostic techniques can be used to determine etiologies, the process is difficult and often fails...
October 14, 2016: Journal of Applied Microbiology
Jacqueline Laures-Gore, Scott Russell, Rupal Patel, Michael Frankel
BACKGROUND/AIMS: This paper describes the design and collection of a comprehensive spoken language dataset from speakers with motor speech disorders in Atlanta, Ga., USA. This collaborative project aimed to gather a spoken database consisting of nonmainstream American English speakers residing in the Southeastern US in order to provide a more diverse perspective of motor speech disorders. METHODS: Ninety-nine adults with an acquired neurogenic disorder resulting in a motor speech disorder were recruited...
October 14, 2016: Folia Phoniatrica et Logopaedica
Alan S Brown, David Gyllenberg, Heli Malm, Ian W McKeague, Susanna Hinkka-Yli-Salomäki, Miia Artama, Mika Gissler, Keely Cheslack-Postava, Myrna M Weissman, Jay A Gingrich, Andre Sourander
Importance: Speech/language, scholastic, and motor disorders are common in children. It is unknown whether exposure to selective serotonin reuptake inhibitors (SSRIs) during pregnancy influences susceptibility to these disorders. Objective: To examine whether SSRI exposure during pregnancy is associated with speech/language, scholastic, and motor disorders in offspring up to early adolescence. Design, Setting, and Participants: This prospective birth cohort study examined national population-based register data in Finland from 1996 to 2010...
October 12, 2016: JAMA Psychiatry
Gyung Jae Oh, Jiyoung Moon, Yu Mi Lee, Hyeung Keun Park, Ki Soo Park, Yong Woon Yun, Gilwon Kang, Byoung Gwon Kim, Jae Hee Seo, Heeyoung Lee, Won Kyung Lee, Kun Sei Lee, Hee Sook Kim, Young Hoon Lee
The aim of this study was to investigate time trends in the public awareness of stroke and its predicting factors. The target population was 9,600 community-dwelling adults, aged 19-79 years, in 16 metropolitan cities and provinces in Korea. The survey samples in 2012 and 2014 were selected separately (entirely different sets of subjects) using a proportionate quota sampling method. Information concerning knowledge of stroke and demographics was collected by trained telephone interviewers using random digit dialing...
November 2016: Journal of Korean Medical Science
Kyungsoo Ha, Yiping Shen, Tyler Graves, Cheol-Hee Kim, Hyung-Goo Kim
BACKGROUND: 1q21 microdeletion syndrome is a rare contiguous gene deletion disorder with de novo or autosomal dominant inheritance patterns and its phenotypic features include intellectual disability, distinctive facial dysmorphism, microcephaly, cardiac abnormalities, and cataracts. MECP2 duplication syndrome is an X-linked recessive neurodevelopmental disorder characterized by intellectual disability, global developmental delay, and other neurological complications including late-onset seizures...
2016: Molecular Cytogenetics
Malte R Schomers, Friedemann Pulvermüller
In the neuroscience of language, phonemes are frequently described as multimodal units whose neuronal representations are distributed across perisylvian cortical regions, including auditory and sensorimotor areas. A different position views phonemes primarily as acoustic entities with posterior temporal localization, which are functionally independent from frontoparietal articulatory programs. To address this current controversy, we here discuss experimental results from functional magnetic resonance imaging (fMRI) as well as transcranial magnetic stimulation (TMS) studies...
2016: Frontiers in Human Neuroscience
Eline Borch Petersen, Malte Wöstmann, Jonas Obleser, Thomas Lunner
Hearing loss manifests as a reduced ability to understand speech, particularly in multi-talker situations. In these situations, younger normal-hearing listeners' brains are known to track attended speech through phase-locking of neural activity to the slow-varying envelope of the speech. This study investigates how hearing loss, compensated by hearing aids, affects the neural tracking of the speech-onset envelope in elderly participants with varying degree of hearing loss (N = 27, 62-86 years, hearing thresholds 11-73 dB hearing level)...
October 5, 2016: Journal of Neurophysiology
Carol A Boliek, Cynthia M Fox
PURPOSE: The aim of the present study was to validate and extend the evaluation of treatment outcomes following LSVT LOUD® in children with dysarthria secondary to cerebral palsy (CP). METHOD: Seven children (5 females, 6-10 years) with spastic quadriplegia and dysarthria received LSVT LOUD. Outcomes included: (a) quantitative and qualitative indices of communication and social functioning representing therapeutic effects and (b) features of the acoustic signal representing physiological effects on the speech mechanism...
October 5, 2016: International Journal of Speech-language Pathology
Serena Bianchi, Laura D Reyes, William D Hopkins, Jared P Taglialatela, Chet C Sherwood
Vocal learning is a key property of spoken language, which might also be present in nonhuman primate species, such as chimpanzees (Pan troglodytes), to a limited degree. While understanding the origins of vocal learning in the primate brain may help shed light on the evolution of speech and language, little is still known regarding the neurobiological correlates of vocal flexibility in nonhuman primates. The current study used voxel-based morphometry (VBM) to assess whether the cerebral cortex of captive chimpanzees that learned to voluntarily produce sounds to attract the attention of a human experimenter (attention-getting sounds) differs in grey matter distribution compared to chimpanzees that do not exhibit this behavior...
October 5, 2016: Scientific Reports
Edwin Maas
Understanding of the behavioural, cognitive and neural underpinnings of speech production is of interest theoretically, and is important for understanding disorders of speech production and how to assess and treat such disorders in the clinic. This paper addresses two claims about the neuromotor control of speech production: (1) speech is subserved by a distinct, specialised motor control system and (2) speech is holistic and cannot be decomposed into smaller primitives. Both claims have gained traction in recent literature, and are central to a task-dependent model of speech motor control...
October 5, 2016: International Journal of Speech-language Pathology
Maureen A Lefton-Greif, Joan C Arvedson
Speech-language pathologists (SLPs) have played primary roles in the evaluation and management of children with feeding/swallowing disorders for more than five decades. Medical, surgical, and technological advances have improved the survival of young fragile infants and children, many of whom will present with feeding/swallowing problems. Regardless of their underlying etiologies, many of these children are at risk for aspiration-induced lung disease, undernutrition or malnutrition, developmental deficits, and stressful interactions with their caregivers...
November 2016: Seminars in Speech and Language
Anne Smith, Christine Weber
Remarkable progress has been made over the past two decades in expanding our understanding of the behavioral, peripheral physiologic, and central neurophysiologic bases of stuttering in early childhood. It is clear that stuttering is a neurodevelopmental disorder characterized by atypical development of speech motor planning and execution networks. The speech motor system must interact in complex ways with neural systems mediating language and other cognitive and emotional processes. During the time when stuttering typically appears and follows its path to either recovery or persistence, all of these neurobehavioral systems are undergoing rapid and dramatic developmental changes...
November 2016: Seminars in Speech and Language
Danielle Aldridge, Deborah Theodoros, Anthony Angwin, Adam P Vogel
Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is effective in reducing motor symptoms for many individuals with Parkinson's disease (PD). However, STN DBS does not appear to influence speech in the same way, and may result in a variety of negative outcomes for people with PD (PWP). A high degree of inter-individual variability amongst PWP regarding speech outcomes following STN DBS is evident in many studies. Furthermore, speech studies in PWP following STN DBS have employed a wide variety of designs and methodologies, which complicate comparison and interpretation of outcome data amongst studies within this growing body of research...
September 23, 2016: Parkinsonism & related Disorders
Noah D Goodman, Michael C Frank
Understanding language requires more than the use of fixed conventions and more than decoding combinatorial structure. Instead, comprehenders make exquisitely sensitive inferences about what utterances mean given their knowledge of the speaker, language, and context. Building on developments in game theory and probabilistic modeling, we describe the rational speech act (RSA) framework for pragmatic reasoning. RSA models provide a principled way to formalize inferences about meaning in context; they have been used to make successful quantitative predictions about human behavior in a variety of different tasks and situations, and they explain why complex phenomena, such as hyperbole and vagueness, occur...
September 28, 2016: Trends in Cognitive Sciences
Carlotta Lega, Marianne A Stephan, Robert J Zatorre, Virginia Penhune
Interactions between the auditory and the motor systems are critical in music as well as in other domains, such as speech. The premotor cortex, specifically the dorsal premotor cortex (dPMC), seems to play a key role in auditory-motor integration, and in mapping the association between a sound and the movement used to produce it. In the present studies we tested the causal role of the dPMC in learning and applying auditory-motor associations using 1 Hz repetitive Transcranical Magnetic Stimulation (rTMS). In this paradigm, non-musicians learn a set of auditory-motor associations through melody training in two contexts: first when the sound to key-press mapping was in a conventional sequential order (low to high tones mapped onto keys from left to right), and then when it was in a novel scrambled order...
2016: PloS One
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