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Full-Text Articles in Cognitive Psychology
Event-Related Potential Markers Of Perceptual And Conceptual Speech Processes In Patients With Disorders Of Consciousness., Stephen T. Beukema
Event-Related Potential Markers Of Perceptual And Conceptual Speech Processes In Patients With Disorders Of Consciousness., Stephen T. Beukema
Electronic Thesis and Dissertation Repository
Vegetative state (VS) and minimally conscious state (MCS) patients behaviorally demonstrate absent or fluctuating levels of awareness. Functional magnetic resonance imaging evidence of covert perceptual and semantic speech processing provides prognostic value for these patients. In this thesis, I examined the utility of high-density electroencephalography (EEG) in this regard. A contrast between event-related potentials (ERPs) elicited by primed and unprimed word pairs was used to isolate conceptual (semantic) processes, while ERPs elicited by signal-correlated noise were contrasted with those elicited by speech to isolate pre-semantic, perceptual aspects of speech processing. These ERP effects were found to be both temporally and …
I Can See What You Are Saying : Auditory Labels Reduce Visual Search Times, Kit Wing Cho
I Can See What You Are Saying : Auditory Labels Reduce Visual Search Times, Kit Wing Cho
Legacy Theses & Dissertations (2009 - 2024)
The present study explored the mechanisms underlying the self-directed speech effect, the finding that relative to silent reading of a label (e.g., “DOG”), saying it aloud reduces visual search reaction times (RTs) for locating a target picture among distractors. Experiment 1 examined whether this effect is due to a confound in the differences in the number of cues in self-directed speech (two) vs. silent reading (one) and tested whether speech, per se, is required for the effect. Self-directed speech did not reduce search RTs more than hearing only a pre-recorded auditory presentation of a label, both of which reduced RTs …
Hemispheric Specialization For Emotion Within First And Second Languages : Emotion Word Processing In Monolingual And Bilingual Speakers, Jennifer Mary Martin
Hemispheric Specialization For Emotion Within First And Second Languages : Emotion Word Processing In Monolingual And Bilingual Speakers, Jennifer Mary Martin
Legacy Theses & Dissertations (2009 - 2024)
Emotion representation in monolingual speakers is complex, and for bilinguals the relationship between emotion and language can be even more intriguing. The present study examined reactions to words of six types, including positive, negative, and neutral words varying in concreteness. Words and nonwords were intermixed in a lexical decision task using hemifield presentation. In Experiment 1, participants were English monolinguals and all stimuli were presented in English. In Experiment 2, participants were Spanish-English bilinguals who were presented with both English and Spanish stimuli. Results revealed a general left hemisphere advantage. Overall, reaction times for positive words were faster than for …