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Open Access. Powered by Scholars. Published by Universities.®

Brigham Young University

2015

Brain mapping

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Full-Text Articles in Medicine and Health Sciences

Neurophysiological Correlates Of The Critical Bandwidth In The Human Auditory System, Grace Ann Bentley Nov 2015

Neurophysiological Correlates Of The Critical Bandwidth In The Human Auditory System, Grace Ann Bentley

Theses and Dissertations

The critical bandwidth (CBW) is an auditory phenomenon that has been used to study various aspects of auditory processing, including auditory masking, complex tone processing, and loudness perception. Although the psychoacoustic aspects of the CBW have been well studied, the underlying neurophysiology of the CBW has not been as thoroughly examined. The current study examined the neurophysiology of the CBW in young adults, as well as loudness perception in response to the CBW. Auditory stimuli consisting of complex tones of varying bandwidths were presented to 12 individuals (6 male and 6 female, ages 18-26 years). Complex tones were presented around …


Source Localization In Cross Modality Matching Of Brightness And Loudness Of Young Adults, Tawnya Nadine Coates Apr 2015

Source Localization In Cross Modality Matching Of Brightness And Loudness Of Young Adults, Tawnya Nadine Coates

Theses and Dissertations

Cross modality matching is a magnitude matching procedure, developed to study the relationships between sensory modalities. Auditory and visual sensory integration can be examined through cross modality matching of brightness and loudness. Brightness and loudness are natural correlates of one another as they both represent the parameter of intensity for their respective sensory modalities. Past studies have demonstrated that typical individuals tend to match brighter lights with louder sounds and dimmer lights with softer sounds. The current study utilized a modified cross modality matching procedure, combined with electroencephalography (EEG) data, to examine the cortical response to sensory integration. It was …


Brain Mapping Of The Latency Epochs In A Mcgurk Effect Paradigm In Music Performance And Visual Arts Majors, Lauren Donelle Nordstrom Mar 2015

Brain Mapping Of The Latency Epochs In A Mcgurk Effect Paradigm In Music Performance And Visual Arts Majors, Lauren Donelle Nordstrom

Theses and Dissertations

The McGurk effect is an illusion that occurs when an auditory /ba/ is combined with a visual /ga/. The two stimuli fuse together which leads to the perception of /da/, a sound in between /ba/ and /ga/. The purpose of this study was to determine whether music performance and visual arts majors process mismatched auditory and visual stimuli, like the McGurk effect, differently. Nine syllable pairs were presented to 10 native English speakers (5 music performance majors and 5 visual arts majors between the ages of 18 and 28 years) in a four-forced-choice response paradigm. Data from event-related potentials were …