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Description

The brain continuously monitors speech output to detect potential errors between its sensory prediction and its sensory production (Daliri et al., 2020). When the brain encounters an error, it generates a corrective motor response, usually in the opposite direction, to reduce the effect of the error. Previous studies have shown

The brain continuously monitors speech output to detect potential errors between its sensory prediction and its sensory production (Daliri et al., 2020). When the brain encounters an error, it generates a corrective motor response, usually in the opposite direction, to reduce the effect of the error. Previous studies have shown that the type of auditory error received may impact a participant’s corrective response. In this study, we examined whether participants respond differently to categorical or non-categorical errors. We applied two types of perturbation in real-time by shifting the first formant (F1) and second formant (F2) at three different magnitudes. The vowel /ɛ/ was shifted toward the vowel /æ/ in the categorical perturbation condition. In the non-categorical perturbation condition, the vowel /ɛ/ was shifted to a sound outside of the vowel quadrilateral (increasing both F1 and F2). Our results showed that participants responded to the categorical perturbation while they did not respond to the non-categorical perturbation. Additionally, we found that in the categorical perturbation condition, as the magnitude of the perturbation increased, the magnitude of the response increased. Overall, our results suggest that the brain may respond differently to categorical and non-categorical errors, and the brain is highly attuned to errors in speech.

ContributorsCincera, Kirsten Michelle (Author) / Daliri, Ayoub (Thesis director) / Azuma, Tamiko (Committee member) / School of Sustainability (Contributor) / College of Health Solutions (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
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Description
The purpose of this study was to conduct a qualitative investigation to provide a baseline understanding of the typical experiences of food insecure college students and their understanding of what it means to be food insecure. Because of the stigma that is associated with food insecurity and emergency food resources,

The purpose of this study was to conduct a qualitative investigation to provide a baseline understanding of the typical experiences of food insecure college students and their understanding of what it means to be food insecure. Because of the stigma that is associated with food insecurity and emergency food resources, it may be difficult for students to discuss these topics openly with university administration or even with each other. For this reason, an asynchronous remote community allowed students to share their experiences anonymously. The narrative data collected in this study is meant to share the stories of students who live with the reality of food insecurity every day.
ContributorsPacheco, Lindsay (Author) / Vemuri, Renuka (Co-author) / Stabile, Diana (Co-author) / McCoy, Maureen (Thesis director) / Pine, Kathleen (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor)
Created2022-05
Description

For those families that rely on food banks as their main source of groceries for the week, it is not uncommon for the parents or children to not know how to prepare the ingredients in a way that can provide as much nutritional value as possible. A cookbook with a

For those families that rely on food banks as their main source of groceries for the week, it is not uncommon for the parents or children to not know how to prepare the ingredients in a way that can provide as much nutritional value as possible. A cookbook with a collection of recipes that specialize in using ingredients commonly found in food banks would be one way to help improve the physical and mental health of families while also teaching children how to cook and prepare nutritious meals at home. I was inspired to create these recipes because I wanted to work with food banks and pantries to help educate their clients about healthy eating and cooking techniques. I wanted to show families that they can cook various meals using many of the same ingredients in different ways. I also wanted to develop recipes that encourage children to cook, become more familiar with different food items, and improve their relationship with food since a significant portion of clients are children, meaning they grow up relying on the ingredients food banks offer. After finding out which recipes and other nutritional aid programs currently exist, I spoke with a few different food banks to learn what types of food are typically distributed from food banks. From there, I drafted a list of recipes, worked with AZ Health Zone to analyze the nutrients for each recipe, and revised the recipes to better meet the nutrition standards of AZ Health Zone. As of now, a handful of food pantries, including the AZ Health Zone, agreed to share my total of 9 recipes (in English and Spanish) with their clients.

ContributorsArias, Caroline (Author) / Dixon, Kathleen (Thesis director) / Martinelli, Sarah (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor)
Created2021-12
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ContributorsArias, Caroline (Author) / Dixon, Kathleen (Thesis director) / Martinelli, Sarah (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor)
Created2021-12
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ContributorsArias, Caroline (Author) / Dixon, Kathleen (Thesis director) / Martinelli, Sarah (Committee member) / Barrett, The Honors College (Contributor) / College of Health Solutions (Contributor)
Created2021-12
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Description
Cochlear implant (CI) successfully restores hearing sensation to profoundly deaf patients, but its
performance is limited by poor spectral resolution. Acoustic CI simulation has been widely used
in normal-­hearing (NH) listeners to study the effect of spectral resolution on speech perception,
while avoiding patient-­related confounds. It is unclear how speech production may change

Cochlear implant (CI) successfully restores hearing sensation to profoundly deaf patients, but its
performance is limited by poor spectral resolution. Acoustic CI simulation has been widely used
in normal-­hearing (NH) listeners to study the effect of spectral resolution on speech perception,
while avoiding patient-­related confounds. It is unclear how speech production may change with
the degree of spectral degradation of auditory feedback as experience by CI users. In this study,
a real-­time sinewave CI simulation was developed to provide NH subjects with auditory
feedback of different spectral resolution (1, 2, 4, and 8 channels). NH subjects were asked to
produce and identify vowels, as well as recognize sentences while listening to the real-­time CI
simulation. The results showed that sentence recognition scores with the real-­time CI simulation
improved with more channels, similar to those with the traditional off-­line CI simulation.
Perception of a vowel continuum “HEAD”-­ “HAD” was near chance with 1, 2, and 4 channels,
and greatly improved with 8 channels and full spectrum. The spectral resolution of auditory
feedback did not significantly affect any acoustic feature of vowel production (e.g., vowel space
area, mean amplitude, mean and variability of fundamental and formant frequencies). There
was no correlation between vowel production and perception. The lack of effect of auditory
feedback spectral resolution on vowel production was likely due to the limited exposure of NH
subjects to CI simulation and the limited frequency ranges covered by the sinewave carriers of
CI simulation. Future studies should investigate the effects of various CI processing parameters
on speech production using a noise-­band CI simulation.
ContributorsPerez Lustre, Sarahi (Author) / Luo, Xin (Thesis director) / Daliri, Ayoub (Committee member) / Division of Teacher Preparation (Contributor) / College of Health Solutions (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2019-05