A5046915296- Neurobiology of Language and Bilingualism
- Reading and Literacy Development
- Language Development and Disorders
- Stroke Rehabilitation and Recovery
- Dementia and Cognitive Impairment Research
- EEG and Brain-Computer Interfaces
- Interpreting and Communication in Healthcare
- Action Observation and Synchronization
- Advanced Neuroimaging Techniques and Applications
- Text Readability and Simplification
- Educational and Psychological Assessments
- Neural and Behavioral Psychology Studies
- Cognitive Functions and Memory
- Psychometric Methodologies and Testing
- Acute Ischemic Stroke Management
- Stuttering Research and Treatment
- Fetal and Pediatric Neurological Disorders
- Assistive Technology in Communication and Mobility
- Topic Modeling
- Traumatic Brain Injury Research
- Second Language Acquisition and Learning
- Meta-analysis and systematic reviews
- Autism Spectrum Disorder Research
- Peripheral Nerve Disorders
- Writing and Handwriting Education
VA Pittsburgh Healthcare System
2015-2025
University of Pittsburgh
2013-2024
Google (United States)
2008-2024
Geriatric Research Education and Clinical Center
2011-2023
Voith (United States)
2022
University of Pittsburgh Medical Center
2009
Aphasia has traditionally been viewed as a loss or impairment of language. However, evidence is presented suggesting that language mechanisms are fundamentally preserved and aphasic behaviors instead due to impairments cognitive processes supporting their construction. These may be understood linguistically specialized attentional system vulnerable competition from other processing domains. We present two models attention focus on for central discuss findings dual-task studies normal...
Purpose In this article, the authors encapsulate discussions of Language Work Group that took place as part Workshop in Plasticity/NeuroRehabilitation Research at University Florida April 2005. Method narrative review, they define neuroplasticity and review studies demonstrate neural changes associated with aphasia recovery treatment. The then summarize basic science evidence from animals, human cognition, computational neuroscience is relevant to treatment research. They turn literature...
The human inferior longitudinal fasciculus (ILF) is a ventral, temporo-occipital association tract. Though described in early neuroanatomical works, its existence was later questioned. Application of vivo tractography to the study ILF has generally confirmed existence, however consensus lacking regarding subdivision, laterality and connectivity. Further, there paucity detailed neuroanatomic data pertaining exact anatomy ILF. Generalized Q-Sampling imaging (GQI) non-tensor tractographic...
The purpose of this study is to investigate the structure and measurement properties Aphasia Communication Outcome Measure (ACOM), a patient-reported outcome measure communicative functioning for persons with aphasia.Three hundred twenty-nine participants aphasia responded 177 items asking about functioning. data were analyzed using categorical item factor analysis approach. Validity ACOM scores on basis their convergence performance-based, clinician-reported, surrogate-reported assessments...
Abstract While current dual-steam neurocognitive models of language function have coalesced around the view that distinct neuroanatomical networks subserve semantic and phonological processing, respectively, specific white matter components these remain a debate. To inform this debate, we investigated relationships between structural connectivity word production in cross-sectional study 42 participants with aphasia due to unilateral left hemisphere stroke. Specifically, reconstructed local...
Background: Working memory (WM) has gained recent attention as a cognitive construct that may account for language comprehension deficits in persons with aphasia (PWA) (Caspari, Parkinson, LaPointe, & Katz, 1998 Caspari, I., S. R., L. and R. C. 1998. aphasia.. Brain Cognition, 37: 205–223. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; Martin, Kohen, Kalinyak‐Fliszar, 2008 N., F. M. 2008. A diagnostic battery to assess short‐term Poster presentation at Clinical Aphasiology...
Purpose The purpose of this article is to describe the rationale, clinical processes, and outcomes an intensive comprehensive aphasia program (ICAP). Method Seventy-three community-dwelling adults with completed a residentially based ICAP. Participants received 5 hr daily 1:1 evidence-based cognitive-linguistically oriented therapy, supplemented weekly socially therapeutic group activities over 23-day treatment course. Standardized measures severity communicative functioning were obtained at...
Purpose This study investigated the predictive value of practice-related variables—number treatment trials delivered, total time, average number per hour, and participant-generated features trial—in response to semantic feature analysis (SFA) treatment. Method SFA was administered 17 participants with chronic aphasia daily for 4 weeks. Individualized semantically related probe lists were generated from items that unable name consistently during baseline testing. Treatment each list...
In this study, we investigated the fit of Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996) to an item-response-theory measurement model, estimated precision resulting scores and item parameters, provided a theoretical rationale for interpretation PNT overall by relating explanatory variables difficulty. This article describes statistical model underlying computer adaptive presented in companion (Hula, Kellough, Fergadiotis, 2015).Using archival data, evaluated...
Background Evidence regarding the effect of conversationally based communication group treatment on discourse production in aphasia is limited. Given rich, complex experiences provided these groups, it seemed plausible that participation them could result improvement simpler aspects production.Aims To examine effects informativeness and efficiency structured conversational tasks adults with chronic aphasia.Methods & Procedures The data for this study were discourses elicited prospectively...
Purpose: Although there is widespread agreement pertaining to the cognitive processes underlying spoken word production, more generally in aphasia, multiple competing accounts exist regarding involved for verb specifically. Some have speculated that suboptimal control of certain item properties (e.g., imageability) may be partially responsible conflicting reports literature, yet remains a dearth research on psychometric validation production tests aphasia. The purpose present study was...
Background: The Burden of Stroke Scale (BOSS) (Doyle et al., 2002) is a health-status assessment instrument designed to measure patient-reported difficulty in multiple domains functioning, psychological distress associated with specific functional limitations, and,general well-being stroke survivors. Aims : This study was examine the discriminative and concurrent validity BOSS Communication Difficulty (CD) Communication-Associated Psychological Distress (CAPD) scales. A secondary purpose...
Background: The Western Aphasia Battery (WAB) (Kertesz, 1982 Kertesz, A. 1982. Battery, New York: Grune & Stratton. [Google Scholar]) is one of the most frequently used tests general language performance in aphasia, despite significant psychometric limitations. Item response theory (IRT) provides measurement models that may address some these Aims: purposes this investigation were to evaluate whether WAB can be productively fit an IRT model, and modelling confers benefits. Methods...
Purpose Semantic feature analysis (SFA) is a naming treatment found to improve performance for both treated and semantically related untreated words in aphasia. A crucial component the requirement that patients generate semantic features of items. This article examined role generation plays response SFA several ways: It attempted replicate preliminary findings from Gravier et al. (2018), which predicted treatment-related gains trained untrained words. whether diversity or number generated...
The purpose of this study was to develop a computerized adaptive test (CAT) version the Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996), reduce length while maximizing measurement precision. This article is direct extension companion (Fergadiotis, Kellough, Hula, 2015), in which we fitted PNT 1-parameter logistic item-response-theory model and examined validity precision resulting item parameter ability score estimates.Using archival data collected from...
Purpose Aphasia is a language disorder caused by acquired brain injury, which generally involves difficulty naming objects. Naming ability assessed measuring picture naming, and models of performance have mostly focused on accuracy excluded valuable response time (RT) information. Previous approaches therefore ignored the issue processing efficiency, defined here in terms optimal RT cutoff, that is, shortest deadline at individual people with aphasia produce their best possible performance....
Background: Current neurocognitive models of language function have been primarily built from evidence regarding object naming, and their hypothesized white-matter circuit mechanisms tend to be coarse grained. Methods: In this cross-sectional, observational study, we used novel correlational tractography assess the mechanism behind verb retrieval, measured through action picture-naming performance in adults with chronic aphasia. Results: The analysis identified tracts implicated current...
Background: Quantifying the severity of language impairment and measuring change in performance over time are two important objectives assessment aphasia. The notion cognitive effort as understood from a resource allocation perspective provides potentially useful complement to traditional constructs employed aphasia assessment. Aims: series experiments described this paper used theory dual‐task methodology (1) assess whether comprehension task (Story Retell Procedure) visual‐manual tracking...