The Impact Of Task-Specific Transcranial Direct Current Stimulation (Tdcs) On Sustained Attention In A Healthy Population, Kasi Dawn Steele

LSU Master's Theses

ABSTRACT

Objective: To examine the impact of task-specific anodal transcranial direct current stimulation (tDCS) administered over the left dorsolateral prefrontal cortex (L-DLPFC) on sustained attention in healthy participants.

Methods: This study examined the effects of task-training and tDCS over the left dorsolateral prefrontal cortex on sustained attention. Participants (n=13) completed four sessions consisting of either true-stimulation (2 mA for 10 minutes) or sham-stimulation (2 mA for 30 sec) in counterbalanced order. Participants completed one session every 7 to 10 days and were randomly assigned to one of two task-specific conditions in counterbalanced order. All sessions consisted of a 10-minute Go/No-Go …

Articulatory Kinematics During Stop Closure In Speakers With Parkinson’S Disease, Austin Ross Thompson

LSU Master's Theses

Purpose: The goal of this exploratory study was (a) to investigate the differences in articulatory movements during the closure phase of bilabial stop consonants with respect to distance, displacement, and timing of motion between individuals with Parkinson’s Disease (PD) and healthy controls; and (b) to investigate changes in articulatory movements of speakers with PD when they voluntarily vary the degree of speech intelligibility.

Methods: Six participants, 4 PD and 2 healthy control (HC) speakers, participated in this study. The stimulus was a sentence containing several bilabial stop consonants (i.e., “Buy Bobby a puppy”). Movement data were collected using …

A Comparison Of Pass Rates Across Three Language Screeners For Spanish-English Bilingual Children, Mariajose Bosanko

LSU Master's Theses

There is limited research regarding the efficacy of the language screening process, especially for bilingual populations. The purpose of this study was to examine the pass rates of three language screeners when administered to Spanish-English bilingual and ELL children. A total of ten Spanish-English bilingual children enrolled in either Pre-K, kindergarten, or first grade completed each screener. The screeners were: the Preschool Language Scales Spanish Screening Test-Fifth Edition (PLSSST-5; Zimmerman et al., 2012a), the Bilingual English Spanish Oral Screener (BESOS; currently in development; Lugo-Neris et al., n.d.), and the Diagnostic Evaluation of Language Variation-Screening Test (DELV-S; Seymour et al., 2003). …