Brown Bag

2017-2018 Talks

LYLE 1150: 12:30-1:20pm 

September 18, 2017

Ryan Peters, PhD Student, SLHS

Modeling Early Lexico-Semantic Network Development: Perceptual Features Matter Most

Abstract: What kinds of connections among word meaning are important in early vocabulary learning? We approach this question by (1) exploring relations between the semantic characteristics of words and the order in which they are typically learned and (2) modeling normative lexico-semantic noun-feature network development. We use a database of semantic features of early-learned words (Peters et al. in prep) in conjunction with a publicly available dataset of word-level vocabulary data in 16- to 30- month-old children (Frank et al., 2016).

September 25, 2017

MobileMedTek, a Louisville, Kentucky based engineering design firm focused on innovation in neurodiagnostics, will be visiting and presenting from 12:30-1:20 pm in LYLE 1150. MobileMedTek will be providing a demonstration of the ElectroTek system and highlight potential areas for collaboration with innovators in the neurodiagnostics and electrophysiology research space.

The ElectroTek, is a streamlined 32-channel EEG system with expanded capabilities that may be of interest to the neuroscience community.  The product can be used in the diagnosis of neurological disorders ranging from epilepsy to diabetic neuropathy through Electroencephalography (EEG), Electromyography (EMG), Nerve Conduction Studies (NCS), and Evoked Potential (EP) tests.

Key features of our product include:

· Clinical-grade mobile system

· Cloud-enabled

· Real-time remote review

· Intuitive setup and user interface (Approximately 5-minute setup time from power-on)

October 2, 2017

Tory McKenna, Postdoc Candidate

Physiological, Acoustical, and Perceptual Measures of Vocal Effort

Although excessive vocal effort is one of the most common symptoms reported in individuals with tension-based voice disorders, there currently exists no single measure that can objectively indicate or track effort at this time. As a result, further information is needed to guide clinical care in these patients. The studies described in this talk seek to explore quantitative measures to further understand the underlying physiology of effort and evaluate objective indicators of effort and tension. In particular, these studies will explore 1) an acoustic correlate to laryngeal tension during modulations of vocal effort, 2) novel use of a neck-surface accelerometer to estimate subglottal pressure during changes in vocal effort and intensity, and 3) methodology from a comprehensive analysis of laryngeal physiology and acoustical indicators of vocal effort, and their relationship with self- and listener-perceptions

October 30, 2017

Laurence B Leonard, Distinguished Professor

The Preliminary effect of Whispered Speech on Voice Measures.

Many prominent treatment approaches for preschool-age children with morphosyntactic deficits place emphasis on creating an “ideal” input by increasing the number of times the target form is presented, that is, by increasing token frequency. In this presentation, three more recent intervention approaches that go beyond token frequency will be discussed. These approaches are the “Input Informativeness” approach, the “Competing Sources of Input” approach, and the “High Variability” approach. Based on recent intervention studies, all three of these approaches have been successful in helping children make significant gains in morphosyntax. The three approaches go beyond token frequency by emphasizing relative frequency and type frequency in the presentation of target forms to children. Examples of each of these approaches will be presented along with supportive evidence. With very few modifications, the key ingredients of these three approaches can be integrated into a treatment regimen without violating any of their theoretical assumptions.  

November 6, 2017

Anumitha Venkatraman, PhD Candidate

The Preliminary effect of Whispered Speech on Voice Measures.

Whispered speech is characterized by turbulent airflow at the level of the glottis. Using a whisper quality is believed to harm the voice but, there is no consensus on the effects of whispered speech on voice production. We investigated the effects of sustained (45 minutes) whispered speech versus loud speech on voice measures in 24 healthy subjects. Both whispered and loud speech negatively affected aerodynamic and acoustic voice measures. The implications of these findings will be discussed.

November 13, 2017

Julia Krebs, Ph.D.
Research group Neurobiology of Language, Department of Linguistics; Centre for Cognitive Neuroscience (CCNS), University of Salzburg
Visiting Post-doctoral Scholar, Fall 2017

Who is doing what to whom? - The processing of argument relations in Austrian Sign Language (ÖGS)

Studies on spoken languages revealed the human parser’s tendency to interpret a sentence-initial syntactically ambiguous argument as the subject. This “subject preference“ leads to reanalysis and thus causes enhanced processing costs during the processing of locally ambiguous object-initial orders. Because the subject preference has been observed in typologically different languages it has been assumed to represent a universal processing strategy. The studies presented in this talk investigated how word order variations are processed in a sign language (Austrian Sign Language), whether the universality of the “subject preference“ can be supported by data of sign language processing, and whether there are modality specific differences in processing.

November 27, 2017

Justin Kueser, PhD Candidate

Third person singular -s: Input and neighborhood density

The presentation will report on the results of a study of children with specific language impairment (SLI) and typical development (TD) and their production of third person singular -s. Participants included 23 children with SLI and 21 children with TD. Relative proportions of third person singular -s forms compared to bare forms were calculated for 25 verbs based on an American English corpus of child-directed speech. Neighborhood density values for these verbs were also calculated. Mixed-effects logistic regression indicated that both children with SLI and children with TD were more likely to produce third person singular -s forms of verbs that more often appeared as third person singular -s forms in the input. Children with SLI were also more likely to produce third person singular -s on sparse verbs than on dense verbs whereas there was no association between third person singular -s use and neighborhood density for children with TD. The results for neighborhood density were interpreted as a result of the poorer phonological representations of children with SLI. Implications for treatment and assessment will also be discussed.

December 4, 2017

Katie Lippitt Gerwin, PhD Candidate

Exploring Phonology in Young Children Who Stutter

There is a long history of exploring phonological disorders and phonological processing skills in people who stutter. Some implicate phonological processes, such as phonological encoding, as a key contributor to stuttering development. In this presentation, two investigations of phonological awareness in children who stutter and their typically fluent peers will be discussed. The first study investigated whether phonological awareness tasks (rhyme discrimination and rhyme production) might differentiate children who will recover from stuttering from those who will persist. The second study used event-related potentials (ERPs) to investigate the neural underpinnings of rhyme judgment in children who stutter and their typically fluent peers. Studies will be discussed within the framework of the Multifactorial Dynamic Pathways (MDP) theory of stuttering (Smith & Weber, 2017). 

January 22, 2018

Ann Alvar, PhD Candidate

Impact of Parkinson’s on use of meaningful speech automatisms

January 29, 2018 

Robert Fujiki

“The Recline and the Head-lift exercises: biomechanical and functional swallowing outcomes of a randomized clinical trial in healthy older adults”

February 5, 2018

Xinxin Liu

“Acrolein exposure on vocal folds”

February 12, 2018

Rana Abu-Zhaya

“Bimodal tactile and linguistic input to infants: Insights from naturalistic, experimental and physiological data”

February 19, 2018  

Françoise Brosseau-Lapre

 “Speech perception in children with and without speech sound disorder”

February 26, 2018

Kara Simon

“Consequences matter when performing a behavior with multiple goals.”

March 5, 2018         

Elizabeth Johnson and Françoise Brosseau-Lapre

“Consonant and vowel errors in multisyllabic words among children with speech sound disorder”

March 12, 2018        

(Spring Break)

 

March 19, 2018

Jiyeon Lee

“Language processing in Parkinson’s Disease”

March 26,2018

Cynthia Hunter IU

“Speech understanding and cognition in adverse listening conditions”

April 2, 2018 

Brandon Keehn

“Non-social attentional processes and their role in the development of autism spectrum disorder”

April 9, 2018

Fatima Hussein

“Neural networks of Tinnitus and Hearing Loss: Insights from human brain imaging studies”

Speech, Language, & Hearing Sciences, Lyles-Porter Hall, 715 Clinic Drive, West Lafayette, IN 47907-2122, PH: (765) 494-3789

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