Education Commons^™

A Screening Protocol Incorporating Brain-Computer Interface Feature Matching Considerations For Augmentative And Alternative Communication, Kevin M. Pitt, Jonathan S. Brumberg

Department of Special Education and Communication Disorders: Faculty Publications

Purpose: The use of standardized screening protocols may inform brain-computer interface (BCI) research procedures to help maximize BCI performance outcomes and provide foundational information for clinical translation. Therefore, in this study we developed and evaluated a new BCI screening protocol incorporating cognitive, sensory, motor and motor imagery tasks.

Methods: Following development, BCI screener outcomes were compared to the Amyotrophic Lateral Sclerosis Cognitive Behavioral Screen (ALS-CBS), and ALS Functional Rating Scale (ALS-FRS) for twelve individuals with a neuromotor disorder.

Results: Scores on the cognitive portion of the BCI screener demonstrated limited variability, indicating all participants possessed core BCI-related skills. When compared …

Guidelines For Feature Matching Assessment Of Brain–Computer Interfaces For Augmentative And Alternative Communication, Kevin M. Pitt, Jonathan S. Brumberg

Department of Special Education and Communication Disorders: Faculty Publications

Purpose--Brain–computer interfaces (BCIs) can provide access to augmentative and alternative communication (AAC) devices using neurological activity alone without voluntary movements. As with traditional AAC access methods, BCI performance may be influenced by the cognitive–sensory–motor and motor imagery profiles of those who use these devices. Therefore, we propose a person-centered, feature matching framework consistent with clinical AAC best practices to ensure selection of the most appropriate BCI technology to meet individuals' communication needs.

Method--The proposed feature matching procedure is based on the current state of the art in BCI technology and published reports on cognitive, sensory, motor, and motor …

A Non-Invasive Brain-Computer Interface For Real-Time Speech Synthesis: The Importance Of Multimodal Feedback, Jonathan S. Brumberg, Kevin M. Pitt, Jeremy D. Burnison

Department of Special Education and Communication Disorders: Faculty Publications

We conducted a study of a motor imagery brain-computer interface (BCI) using electroencephalography (EEG) to continuously control a formant frequency speech synthesizer with instantaneous auditory and visual feedback. Over a three-session training period, sixteen participants learned to control the BCI for production of three vowel sounds (/ℹ/[heed], /ɐ/[hot], and/u/[who’d]) and were split into three groups: those receiving unimodal auditory feedback of synthesized speech, those receiving unimodal visual feedback of formant frequencies, and those receiving multimodal, audio-visual feedback. Audio feedback was provided by a formant frequency artificial speech synthesizer and visual feedback was given as a two-dimensional cursor on a graphical …

Early Uneven Ear Input Induces Long-Lasting Differences In Left-Right Motor Function, Michelle W. Antoine, Xiaoxia Zhu, Marianne Dieterich, Thomas Brandt, Sarath Vijayakumar, Nicholas Mckeehan, Joseph C. Arezzo, R. Suzanne Zukin, David A. Borkholder, Sherri M. Jones, Robert D. Frisina, Jean M. Hébert

Department of Special Education and Communication Disorders: Faculty Publications

How asymmetries in motor behavior become established normally or atypically in mammals remains unclear. An established model for motor asymmetry that is conserved across mammals can be obtained by experimentally inducing asymmetric striatal dopamine activity. However, the factors that can cause motor asymmetries in the absence of experimental manipulations to the brain remain unknown. Here, we show that mice with inner ear dysfunction display a robust left or right rotational preference, and this motor preference reflects an atypical asymmetry in cortico-striatal neurotransmission. By unilaterally targeting striatal activity with an antagonist of extracellular signal-regulated kinase (ERK), a downstream integrator of striatal …

Brain–Computer Interfaces For Augmentative And Alternative Communication: A Tutorial, Jonathan S. Brumberg, Kevin M. Pitt, Alana Mantie-Kozlowski, Jeremy D. Burnison

Department of Special Education and Communication Disorders: Faculty Publications

Purpose--Brain–computer interfaces (BCIs) have the potential to improve communication for people who require but are unable to use traditional augmentative and alternative communication (AAC) devices. As BCIs move toward clinical practice, speech-language pathologists (SLPs) will need to consider their appropriateness for AAC intervention.

Method--This tutorial provides a background on BCI approaches to provide AAC specialists foundational knowledge necessary for clinical application of BCI. Tutorial descriptions were generated based on a literature review of BCIs for restoring communication.

Results--The tutorial responses directly address 4 major areas of interest for SLPs who specialize in AAC: (a) the current state …

Saliva Production And Enjoyment Of Real-Food Flavors In People With And Without Dysphagia And/Or Xerostomia, Angela M. Dietsch, Cathy A. Pelletier, Nancy Pearl Solomon

Department of Special Education and Communication Disorders: Faculty Publications

Non-food gustatory stimulation has multiple potential therapeutic benefits for people with dysphagia and xerostomia. This study examined palatability and saliva flow associated with dissolvable flavored films. Taste strips with real-food flavors dissolved on the tongues of 21 persons with dysphagia and/or xerostomia and 21 healthy age- and sex-matched adults while sublingual gauze pads absorbed saliva over randomized 3-min trials. Participants rated taste enjoyment for each trial on a hedonic general labeled magnitude scale. Flavored strips elicited more saliva than baseline for both groups, and production was higher for controls than patients (M = 2.386 and 1.091 g, respectively; p = …

Working Memory In School-Age Children With And Without A Persistent Speech Sound Disorder, Kelly Farquharson, Tiffany Hogan, John E. Bernthal

Department of Special Education and Communication Disorders: Faculty Publications

Purpose: The aim of this study was to explore the role of working memory processes as a possible cognitive underpinning of persistent speech sound disorders (SSD).

Method: Forty school-aged children were enrolled; 20 children with persistent SSD (P-SSD) and 20 typically developing children. Children participated in three working memory tasks – one to target each of the components in Baddeley’s working memory model: phonological loop, visual spatial sketchpad and central executive.

Result: Children with P-SSD performed poorly only on the phonological loop tasks compared to their typically developing age-matched peers. However, mediation analyses revealed that the relation …

Loss Of Α-Calcitonin Gene-Related Peptide (Αcgrp) Reduces Otolith Activation Timing Dynamics And Impairs Balance, Sherri M. Jones, Sarath Vijayakumar, Samantha A. Dow, Joseph C. Holt, Paivi M. Jordan, Anne E. Luebke

Department of Special Education and Communication Disorders: Faculty Publications

Calcitonin gene-related peptide (CGRP) is a neuroactive peptide that is thought to play a role at efferent synapses in hair cell organs including the cochlea, lateral line, and semicircular canal. The deletion of CGRP in transgenic mice is associated with a significant reduction in suprathreshold cochlear nerve activity and vestibulo– ocular reflex (VOR) gain efficacy when compared to littermate controls. Here we asked whether the loss of CGRP also influences otolithic end organ function and contributes to balance impairments. Immunostaining for CGRP was absent in the otolithic end organs of aCGRP null (-/-) mice while choline acetyltransferase (ChAT) immunolabeling appeared …

Grxcr2 Is Required For Stereocilia Morphogenesis In The Cochlea, Matthew R. Avenarius, Jae-Yun Jung, Charles Askew, Sherri M. Jones, Kristina L. Hunker, Hela Azaiez, Atteeq U. Rehman, Margit Schraders, Hossein Najmabadi, Hannie Kremer, Richard J. H. Smith, Gwenaelle S. G. Geleoc, David F. Dolan, Yehoash Raphael, David C. Kohrman

Department of Special Education and Communication Disorders: Faculty Publications

Hearing and balance depend upon the precise morphogenesis and mechanosensory function of stereocilia, the specialized structures on the apical surface of sensory hair cells in the inner ear. Previous studies of Grxcr1 mutant mice indicated a critical role for this gene in control of stereocilia dimensions during development. In this study, we analyzed expression of the paralog Grxcr2 in the mouse and evaluated auditory and vestibular function of strains carrying targeted mutations of the gene. Peak expression of Grxcr2 occurs during early postnatal development of the inner ear and GRXCR2 is localized to stereocilia in both the cochlea and in …

My Client Knows That He’S About To Stutter: How Can We Address Stuttering Anticipation During Therapy With Young People Who Stutter?, Eric S. Jackson, Hope Gerlach, Naomi H. Rodgers, Patricia M. Zebrowski

Department of Special Education and Communication Disorders: Faculty Publications

Stuttering anticipation is endorsed by many people who stutter as a core aspect of the stuttering experience. Anticipation is primarily a covert phenomenon and people who stutter respond to anticipation in a variety of ways. At the same time as anticipation occurs and develops internally, for many individuals the “knowing” or “feeling” that they are about to stutter is a primary contributor to the chronicity of the disorder. In this article, we offer a roadmap for both understanding the phenomenon of anticipation and its relevance to stuttering development. We introduce the Stuttering Anticipation Scale (SAS)—a 25-item clinical tool that can …

A Rapid, Handheld Device To Assess Respiratory Resistance: Clinical And Normative Evidence, Aaron B. Holley, Wesley D. Boose, Michael Perkins, Karen L. Sheikh, Nancy P. Solomon, Angela M. Dietsch, Jafar Vossoughi, Arthur T. Johnson, Jacob F. Collen

Department of Special Education and Communication Disorders: Faculty Publications

Introduction: Following reports of respiratory symptoms among service members returning from deployment to South West Asia (SWA), an expert panel recommended pre-deployment spirometry be used to assess disease burden. Unfortunately, testing with spirometry is high cost and time-consuming. The airflow perturbation device (APD) is a handheld monitor that rapidly measures respiratory resistance (APD-R_r) and has promising but limited clinical data. Its speed and portability make it ideally suited for large volume pre-deployment screening. We conducted a pilot study to assess APD performance characteristics and develop normative values. Materials and Methods: We prospectively enrolled subjects and derived reference equations …