Medicine and Health Sciences Commons^™

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. …

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 …

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 …

Comparing Functional Motor Control And Gait Parameters In Children With Autism To Those Of Age-Matched Peers Who Are Typically Developing, Patricia Stevenson, Samantha Novotny, Jillian May, Christopher Ancell

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to compare motor performance of children with Autism Spectrum Disorder (ASD) to that of age-matched peers who are typically developing (TD) on motor control tasks plus symmetry and variability of gait parameters across four walking conditions. A sample of convenience of children with ASD (n=6) and peers who are TD (n=6) were recruited. Motor control was assessed using initiation and completion times on the Timed Up and Go (TUG) test. Gait parameters were collected using a computerized walkway under four trial conditions: 1) walking at self-selected velocity (SSV); 2) walking during a tray-carrying task …

The Impacts Of A Smoking Ban On Gaming Volume And Customers' Satisfaction In The Casino Industry In South Korea, Sojeong Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

A growing number of countries have legislated smoke-free policies in enclosed public areas and have extended the policies to hospitality facilities. However, some states and countries exempt gaming areas from the smoking law fully or partially. Anti-smoking policy is controversial for a number of reasons, such as smokers’ strong opposition, government ordinance, public health, and economic anxiety. Casino management may worry that a smoking ban policy will result in a significant decline of casino revenue because the break for smoking may interfere with continuing play.

This thesis examined a smoking ban impacts on gaming volume and customers’ satisfaction in the …

Examining The Role Of Supportive Others In Substance Abuse Treatment And Child Welfare, Jessica Marie Urgelles

UNLV Theses, Dissertations, Professional Papers, and Capstones

Child neglect is a prevalent problem and often co-occurs with parental substance abuse. Mothers are most often the perpetrators of child neglect. The currently available treatment programs appear to be failing to meet the needs of these mothers. Most mothers are not completing treatment, putting them at risk of losing custody of their children. The literature suggests that women may have different risk factors associated with their substance use, as compared to men. Social networks appear to play a particularly important role in the maintenance of women’s substance abuse problems. The role of social networks may be distinct for different …