Speech and Hearing Science Commons^™

Examining The Effects Of Pause Times On Auditory Comprehension Utilizing Secondary Data Analysis, Katelyn Vera

Open Access Theses & Dissertations

In this secondary data analysis research study, existing data were analyzed in order to compare behavioral and electrophysiological performance in an individual with aphasia and an individual with no brain damage. The effects of pauses of different durations (i.e., 1, 2, or 3 seconds) inserted within a spoken message were analyzed by examining behavioral and electrophysiological data. Data analyzed included correct response rate, behavioral reaction time, and N400 event related potential (ERP) component amplitude and latency. The following research questions were examined: Is there a difference between the individual with aphasia and the individual with no brain damage for each …

Processing Of Language Switches In Bilingual Individuals With Aphasia: An Event-Related Potential Comparison, Lizette Rodarte

Open Access Theses & Dissertations

Switching between languages, or code-switching, is a common phenomenon in bilingual individuals. In proficient bilinguals, these switches are done with ease and are used for many purposes. Contrary to popular belief, these switches are rule-governed and follow grammatical structure. Bilingual individuals diagnosed with aphasia present with difficulty processing languages and these language switches. With the increase in bilingual individuals, it is likely that the speech-language pathology community will see an increase of bilingual individuals with aphasia on their caseload. For this reason, the purpose of this study is to increase our understanding of the neural processes involved in processing of …

Assessing Cortical Electrophysiologic And Behavioral Activity In Individuals With Aphasia And Participants With No Brain Damage Responding To Spoken Sentence Length Messages, Patricia Lara

Open Access Theses & Dissertations

In this study, six individuals with aphasia and twelve participants with no brain damage responded to spoken sentence length messages using a modified version of the Revised Token Test (McNeil & Prescott, 1978) while cortical activation was recorded using event related potentials (ERP). ERP is a non-invasive imaging procedure that measures cortical activation reflected in the electrical activity that is produced at the level of the cortex in response to internal or external stimulus.

Participants were presented with a visual display that provided eight different token arrangements per trial that were displayed on the computer screen. Spoken messages that increased …