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Full-Text Articles in Medicine and Health Sciences
Brain Mapping Of The Mismatch Negativity Response To Vowel Variances Of Natural And Synthetic Phonemes, Lyndsy Marie Smith
Brain Mapping Of The Mismatch Negativity Response To Vowel Variances Of Natural And Synthetic Phonemes, Lyndsy Marie Smith
Theses and Dissertations
The mismatch negativity (MMN) is a specific event-related potential (ERP) component used frequently in the observation of auditory processing. The MMN is elicited by a deviant stimulus randomly presented in the presence of repeating stimuli. The current study utilized the MMN response in order to determine the temporal (timing) and linguistic processing of natural and synthetic vowel stimuli. It was hypothesized that a significant MMN response would be elicited by natural and synthetic vowel stimuli. Brain mapping of the MMN response was hypothesized to yield temporal resolution information, which would provide detail regarding the sequential processing differences between natural and …
Listeners' Ability To Identify The Gender Of Preadolescent Children Across Multiple Linguistic Contexts, Sharalee Ann Blunck
Listeners' Ability To Identify The Gender Of Preadolescent Children Across Multiple Linguistic Contexts, Sharalee Ann Blunck
Theses and Dissertations
The purpose of this study was to determine whether 20 listeners could identify the gender of 10 preadolescent children from speech samples. An additional aim was to evaluate whether listeners identified children more accurately when listening to speech samples when more linguistic context was available. The listeners were presented with a total of 190 speech samples in four different categories of linguistic context: segments, words, sentences, and discourse. The listeners were instructed to listen to each speech sample and decide whether the speaker was a male or female. In addition, the listeners were instructed to rate their level of confidence …
Brain Mapping Of The Mismatch Negativity And The P300 Response In Speech And Nonspeech Stimulus Processing, Skylee Simmons Neff
Brain Mapping Of The Mismatch Negativity And The P300 Response In Speech And Nonspeech Stimulus Processing, Skylee Simmons Neff
Theses and Dissertations
Previous studies have found that behavioral and P300 responses to speech are influenced by linguistic cues in the stimuli. Research has found conflicting data regarding the influence of phonemic characteristics of stimuli in the mismatch negativity (MMN) response. The current investigation is a replication of the study designed by Tampas et al. (2005), which studied the effects of linguistic cues on the MMN response. This current study was designed to determine whether the MMN response is influenced by phonetic or purely acoustic stimuli, and to expand our knowledge of the scalp distribution of processing responses to within- and across-category speech …