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The KnowledgeBank at OSU (74.520 recursos)

Knowledge Bank contains collections of presentations, publications and reports related to Ohio State University.

17th Denman Undergraduate Research Forum (2012)

Mostrando recursos 1 - 5 de 5

  1. A Sociophonetic Study of the French [R]: Socioeconomic Factors Reflected in Linguistic Variation

    Little, Sarah
    /R/ sounds display much variation in many of the world’s languages, being vulnerable to changes in their pronunciation. This unstable type of sound is found in French. Many linguists have studied the /R/ sound variation of different dialects around the Francophone world, such as French-speaking Africa or Canadian French. However, the variation found within France has not been thoroughly investigated. I initiated this research with the aim to further our understanding of the linguistic evolution of speakers living in France. This project seeks to prove that differences in /R/ pronunciation can be attributed to various social factors, such as gender,...
    - 23-abr-2014

  2. Investigating Long-Term Diet and Marine Resource Use in Kohala, Hawaiʻi

    Lipphardt, Jacqueline
    Marine animals, including fish, mollusk, octopus and squid, were key components of the Hawaiian diet in prehistory. The goal of my research project is to examine long-term prehistoric gathering strategies and to determine if resource depression of mollusk populations in prehistory. I am currently investigating mollusk use in prehistory by analyzing remains from archaeological household sites in Kohala, Hawaiʻi. I am looking at the distribution of different species of mollusk remains throughout Kohala, and analyzing the changes through time. This project is ongoing, but so far I have found no significant changes in species consumed that indicate resource depression. The...
    - 23-abr-2014

  3. Antipsychotic Drug Impact on Dopaminergic Neurons

    Klausing, Alex
    Antipsychotics are used to treat people diagnosed with schizophrenia by blocking dopamine receptors, specifically the D2 subtype. These drugs all increase dopamine in the extracellular to a similar extent by increasing firing rate and synthesis of new dopamine. However, the drugs vary on the rate of synthesis and the amount of dopamine’s metabolite, DOPAC. Previous research has shown this might be due to the difference of antipsychotic drugs’ affinity to the D2 autoreceptor. The purpose of this study is to explain the variability of antipsychotic drugs on the differences in DOPAC levels and dopamine synthesis rates. The way chosen to...
    - 23-abr-2014

  4. Early Developmental Ethanol Exposure Disrupts Hippocampal-Dependent Learning via Deregulated NMDA Receptor Function in a Rodent Model of Fetal Alcohol Syndrome

    Coppola, Jennifer
    Consuming alcohol during pregnancy may lead to a range of lifelong disorders in the resulting offspring known as fetal alcohol spectrum disorders (FASD). The physical and mental impairments are dependent on the developmental timing and resulting blood alcohol concentration. A fetal alcohol syndrome (FAS) rodent model in which a milk/ethanol solution is administered to rat pups across postnatal days (PD) 4-9—a period commensurate to the third trimester in human pregnancy—yields results similar to those seen in individuals with FASD. Behavioral tests given to adult rats are used to assess alcohol’s neurotoxic effects on the developing hippocampus. The context pre-exposure facilitation...
    - 23-abr-2014

  5. Asynchronous Stimulation for Cochlear Implants

    Zajdel, Tom
    This work contributes the first psychoacoustic tests of Asynchronous Interleaved Sampling (AIS) performed with commercially available implants. AIS was originally proposed as an alternative to Continuous Interleaved Sampling (CIS) to demonstrate the benefit of asynchronous stimulation on conveying phase information. AIS automatically adjusts each channel's stimulation rate based on its relative temporal importance, mimicking the behavior of neurons. However, the algorithm was never tested with actual CI patients, so its claim of improving phase perception has stood unsubstantiated. The software design and implementation of AIS lays the groundwork for the first qualitative tests of the method's effect on phase discrimination....
    - 23-abr-2014

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