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Full-Text Articles in Medicine and Health Sciences

The Effect Of Sleep On Perceptual Learning And Memory Consolidation, Vanessa Claire Irsik Aug 2015

The Effect Of Sleep On Perceptual Learning And Memory Consolidation, Vanessa Claire Irsik

UNLV Theses, Dissertations, Professional Papers, and Capstones

An ability to segregate speech accurately is essential given that most auditory environments contain other overlapping conversations or environmental noise. While perceiving speech among background noise can be difficult in and of itself, those with hearing impairments can experience considerable difficulty. While training has been shown to benefit perceptual segregation of trained sounds, it is unclear how such training transfers to sounds not included in a training regimen. The current study aimed to address this question by training listeners on a portion of sounds during a vowel segregation task, and subsequently testing on both the trained sounds and untrained sounds. …


Oral Vs. Nasal Breathing During Submaximal Aerobic Exercise, Chase Ovila Platt Lacomb May 2015

Oral Vs. Nasal Breathing During Submaximal Aerobic Exercise, Chase Ovila Platt Lacomb

UNLV Theses, Dissertations, Professional Papers, and Capstones

When comparing oral breathing versus nasal breathing more volume of air can be transported through the oral passageway, but nasal breathing can lead to slower respiration rates and cleaner inspired air. The purpose of this study is to find the most efficient mode of breathing during different intensities of submaximal aerobic exercise. There were 9 males and 10 females that completed this study. First test was a VO2 Max test, 3.0 mph for 3 minutes, with increases in 1.0 mph every minute after that. Using a regression equation running speeds were determined for each individual’s submaximal intensities. The desire …


Pushing For New Options In Childbirth: A Case Study In Contemporary Integrative Midwifery, Kerie Ann Francis May 2015

Pushing For New Options In Childbirth: A Case Study In Contemporary Integrative Midwifery, Kerie Ann Francis

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this study, I investigate the concept of “integrative midwifery” in a major metropolitan area in the Southwest United States. Specifically, I look at a group of midwives, doulas, and other birthworkers who have organized into a collective business entity to provide services to pregnant and birthing women. Stemming from a perception that the medical model of maternity care is broken in this country, these practitioners seek to offer alternatives. I draw upon literature regarding complementary and alternative medicine (CAM) which shows that market conditions have created a situation in which alternatives to medical modes of care have become increasingly …


A Comparison Of The Effects Of Different Doses Of Gabab Receptor Ligands On Spatial Learning And Memory And Memory Flexibility, Chelcie Heaney May 2015

A Comparison Of The Effects Of Different Doses Of Gabab Receptor Ligands On Spatial Learning And Memory And Memory Flexibility, Chelcie Heaney

UNLV Theses, Dissertations, Professional Papers, and Capstones

The principal inhibitory neurotransmitter in the brain, gamma amino-butyric acid (GABA), mediates several types of learning and memory. Of the two main receptor subtypes for GABA, the in vivo role of GABAB receptor in learning and memory is less well characterized and the current data often conflict. Based on the current literature, it is unclear, for instance, whether enhancing GABAergic activity via the GABAB receptor could be beneficial for or detrimental to learning and memory. Hippocampally-dependent learning and memory tasks are of particular interest due to their clinical relevance to patients with schizophrenia or Alzheimer’s disease, who exhibit impaired performance …


In Vitro Efficacy Of Combined Macrophage-Mediated Plasmonic Photothermal Therapy And Chemotherapeutic Agents, En Chung Shih May 2015

In Vitro Efficacy Of Combined Macrophage-Mediated Plasmonic Photothermal Therapy And Chemotherapeutic Agents, En Chung Shih

UNLV Theses, Dissertations, Professional Papers, and Capstones

Although both chemotherapy and hyperthermia therapy have their inherent advantages, the non-specific targeting of chemotherapy and ineffectiveness of hyperthermia therapy alone suggests a better method can be developed. To overcome this problem, the combined treatment of chemotherapeutic agents with plasmonic photothermal therapy (PPTT) is proposed. This is the first study to investigate the efficacy of combined chemotherapy and PPTT using monocytes as delivery vehicles for gold nanoshells. The results of this investigation shows that PPTT combined with cisplatin resulted in some degree of synergism while additive effects were observed for concurrent treatments of PPTT and doxorubicin and PPTT and bleomycin.


Functional Capacity In Schizophrenia: Relationship Among Effort, Reinforcement Learning And Self-Beliefs, Sally J. Vogel May 2015

Functional Capacity In Schizophrenia: Relationship Among Effort, Reinforcement Learning And Self-Beliefs, Sally J. Vogel

UNLV Theses, Dissertations, Professional Papers, and Capstones

Individuals with schizophrenia exhibit a wide range of complex neurocognitive, psychiatric and behavioral impairments. Recent research suggests that this complex array of symptoms can be at least partially accounted for by dysfunction in more basic mechanisms, such as the ability to learn from positive and negative reinforcement, or the ability to exert adequate effort when completing simple tasks. Evidence also suggests that deficits in these basic mechanisms may contribute to more complex symptoms, such as functional impairment. Also, the relationship between neurocognitive deficits and functional impairment has been found to be mediated by defeatist performance beliefs. However, studies have not …