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Attention And Olfactory Consciousness, Andreas Keller Dec 2011

Attention And Olfactory Consciousness, Andreas Keller

Publications and Research

Understanding the relation between attention and consciousness is an important part of our understanding of consciousness. Attention, unlike consciousness, can be systematically manipulated in psychophysical experiments and a law-like relation between attention and consciousness is waiting to be discovered. Most attempts to discover the nature of this relation are focused on a special type of attention: spatial visual attention. In this review I want to introduce another type of attention to the discussion: attention to the olfactory modality. I will first clarify the position of attention to smells in a general taxonomy of attention. I will then review the mechanisms …

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Associative And Error-Driven Learning In Younger And Older Adults, Candice B. T. Groves Dec 2011

Associative And Error-Driven Learning In Younger And Older Adults, Candice B. T. Groves

Masters Theses & Specialist Projects

Previous research has consistently shown associative deficits in older adults learning and memory (Chalfonte & Johnson 1996; Naveh-Benjamin, 2000; Naveh-Benjamin, Hussain, & Bar-On 2003) that are related to decreases in hippocampal function (Driscoll et al., 2003; Mitchell, Johnson, Raye, & D’Esposito, 2000). However, older adults learn certain simple predictive relationships between events (Mutter & Williams, 2004) that involve basal ganglia dependent error-driven learning. The goal of the current study was to determine whether error-driven learning could reduce the age-related associative deficits that are associated with hippocampal decline. The results did not support the idea that error-driven learning enhanced older adults’ …

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Animal Pain: What It Is And Why It Matters, Bernard E. Rollin Dec 2011

Animal Pain: What It Is And Why It Matters, Bernard E. Rollin

Animal Welfare Collection

The basis of having a direct moral obligation to an entity is that what we do to that entity matters to it. The ability to experience pain is a sufficient condition for a being to be morally considerable. But the ability to feel pain is not a necessary condition for moral considerability. Organisms could have possibly evolved so as to be motivated to flee danger or injury or to eat or drink not by pain, but by ‘‘pangs of pleasure’’ that increase as one fills the relevant need or escapes the harm. In such a world, ‘‘mattering’’ would be positive, …

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Specific Contributions Of Ventromedial, Anterior Cingulate, And Lateral Prefrontal Cortex For Attentional Selection And Stimulus Valuation., Daniel Kaping, Martin Vinck, R Matthew Hutchison, Stefan Everling, Thilo Womelsdorf Dec 2011

Specific Contributions Of Ventromedial, Anterior Cingulate, And Lateral Prefrontal Cortex For Attentional Selection And Stimulus Valuation., Daniel Kaping, Martin Vinck, R Matthew Hutchison, Stefan Everling, Thilo Womelsdorf

Brain and Mind Institute Researchers' Publications

Attentional control ensures that neuronal processes prioritize the most relevant stimulus in a given environment. Controlling which stimulus is attended thus originates from neurons encoding the relevance of stimuli, i.e. their expected value, in hand with neurons encoding contextual information about stimulus locations, features, and rules that guide the conditional allocation of attention. Here, we examined how these distinct processes are encoded and integrated in macaque prefrontal cortex (PFC) by mapping their functional topographies at the time of attentional stimulus selection. We find confined clusters of neurons in ventromedial PFC (vmPFC) that predominantly convey stimulus valuation information during attention shifts. …

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Ecological Revival And Sustainable Living In The Tropical Dry Evergreen Forest Of Tamil Nadu: A Measurement Of Residential Perception In Sadhana Forest, Elizabeth Collette Mcguire Dec 2011

Ecological Revival And Sustainable Living In The Tropical Dry Evergreen Forest Of Tamil Nadu: A Measurement Of Residential Perception In Sadhana Forest, Elizabeth Collette Mcguire

Department of Environmental Studies: Undergraduate Student Theses

Since 1970, the role and function of the U.S. Environmental Protection Agency (EPA) has been to promote environmental quality and to form strategies for carrying out environmental policy1. The EPA has committed to sustainability as the next level of environmental protection. The agency states that sustainability calls for policies and strategies that meet society’s present needs without compromising the ability of future generations to meet their own needs2. Presently, society’s requirements have resulted in natural resource exploitation and population distention- projected to reach 10 billion people within two human generations3. These paired occurrences are …

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Creativity In Triadic Supervision: Using Mandalas To Impact The Working Alliance, Kelly Agnes Dunbar Dec 2011

Creativity In Triadic Supervision: Using Mandalas To Impact The Working Alliance, Kelly Agnes Dunbar

Graduate Theses and Dissertations

This qualitative study investigated the use of mandalas as a creative approach with the potential to impact the supervisory working alliance within the context of triadic supervision. Participants (n=7) included master's level counselors-in-Training (CITs), all female, and ranging in age from 23 to 44. Data generated by the formal interviews gained support for using mandalas as a creative approach in triadic supervision as they revealed the potential to impact the working alliance and the goals, task, and bond therein. Of further importance was the finding that the bond between paired CITs in triadic supervision sessions was also impacted by the …

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Does Responding On Progressive Ratio Schedule Of Reinforcement Vary As A Function Of Phase In Estrous Cycle?, Armandina M. Sanchez Dec 2011

Does Responding On Progressive Ratio Schedule Of Reinforcement Vary As A Function Of Phase In Estrous Cycle?, Armandina M. Sanchez

Theses and Dissertations - UTB/UTPA

Hormonal fluctuations across the menstrual and estrous cycle have been found to influence a variety of behavioral and physical responses in humans and animals, respectively. Impulsive behavior has been associated with the luteal phase of the cycle. Progressive ratio schedule of reinforcement has been widely used to assess the strength of reinforcers. In the present study, a comparison was made between the rate of motor activity, lever pressing, of early and late estrous groups. Differences between the groups were not statistically significant. Further analysis explored subjects individually. Visual examination of the data reveal extreme variability in responding, which coupled with …

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Attitude Change Regarding Animal Abuse In Adults The Effect Of Education And Visual Aids, Ashley Carter Dec 2011

Attitude Change Regarding Animal Abuse In Adults The Effect Of Education And Visual Aids, Ashley Carter

HIM 1990-2015

Additionally, images of animals alone immediately increased attitudes regarding treatment of animals. This difference does not appear to increase further over time. Images of animals alone appear to aid in immediately altering individuals' sense of continuity with animals. The attitude that animals and humans share some commonalities and exist in relation to each other could assist in adoption campaigns by allowing the potential owners to place themselves with the animals they are adopting. However, over time information combined with images of humans and animals significantly increase this sense of commonality. The applications for the results depend on what type of …

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The Influence Of Ethnic Identity And Family Support On Posttraumatic Symptoms In Maltreated Youth, Harpreet Kaur Dec 2011

The Influence Of Ethnic Identity And Family Support On Posttraumatic Symptoms In Maltreated Youth, Harpreet Kaur

UNLV Theses, Dissertations, Professional Papers, and Capstones

Maltreated children are at greater risk of developing PTSD than nonmaltreated children (Ackerman et al., 1998; Epstein et al., 1997; Famularo et al., 1996; Kilpatrick et al., 2003; Widom, 1999). This study sought to assess the role of ethnicity, ethnic identity, and family support on the effects of maltreatment and trauma in adolescents. Participants (n=145) included adolescents from Child Haven, a Department of Family Services (DFS)-related site in Las Vegas, and youths in foster care assessed at the offices of Dr. Stephanie Holland. The first hypothesis was that non-Caucasian youth would have higher levels of PTSD-related symptoms than Caucasian youth. …

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Visual Attention To Erotic Stimuli In Androphilic Male-To-Female Transsexuals, Sarah A. Akhter Dec 2011

Visual Attention To Erotic Stimuli In Androphilic Male-To-Female Transsexuals, Sarah A. Akhter

UNLV Theses, Dissertations, Professional Papers, and Capstones

The present study investigated sex differences in visual attention to erotic stimuli by comparing three groups of individuals: heterosexual men, heterosexual women, and androphilic MtF transsexuals. Twenty men, 20 women and 13 MtF transsexuals were shown 10 split-screen slides, each featuring one nude erotic photo of a man shown on half of the screen and one nude erotic photo of a woman shown on the other half of the screen. Eye movements were tracked as participants viewed the slides. All participants were heterosexual (Kinsey 0-1) relative to gender identity, thus erotic targets for natal men were nude women in the …

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Lead And Attention-Deficit/Hyperactivity Disorder: A Meta-Analysis, James Kenneth Goodlad Iii Dec 2011

Lead And Attention-Deficit/Hyperactivity Disorder: A Meta-Analysis, James Kenneth Goodlad Iii

Master's Theses

Attention-Deficit/Hyperactivity Disorder (ADHD) is thought to have a significant neurological component, and several brain structures have been implicated. Environmental variables like lead have been shown to affect brain structures, which in turn impacts cognitive development and behavior. Some studies have begun to associate environmental variables like lead with the inattentive and hyperactive-impulsive symptoms of ADHD. This meta-analysis examined the association between different components of ADHD (including attention problems and hyperactivity/impulsivity) and level of lead exposure in children and adolescents. Articles focusing on the association between lead and inattention or hyperactivity-impulsivity symptoms were gathered from the online databases PsycINFO and Medline. …

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Are Progressive Ratio And Fixed Interval Schedules Of Reinforcement Related Measures Of Impulsivity?, Christine Guiterrez Dec 2011

Are Progressive Ratio And Fixed Interval Schedules Of Reinforcement Related Measures Of Impulsivity?, Christine Guiterrez

Theses and Dissertations - UTB/UTPA

The area of impulsivity is widely studied among many different professional fields. However, given the broad brush that has been used to paint the construct of impulsivity, it’s apparent that there is no true agreement on a definitive definition. In the present study, a purely behavioral procedure was tested with 10 female Sprague-Dawley rats who were placed on a progressive ratio and then a fixed interval 20 s schedule of reinforcement to see if these two schedules were related measures of impulsivity. The definition of impulsivity used in this study was relative to the performance of all animals in that …

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The Effects Of Physical Activity On Self-Injurious Behavior, Lynnette D. Aguilar Dec 2011

The Effects Of Physical Activity On Self-Injurious Behavior, Lynnette D. Aguilar

Theses and Dissertations - UTB/UTPA

Auto-mutilation is a maladaptive coping mechanism and a major problem confronting behavioral medicine with no known treatment to date to place the behavior on complete extinction. The purpose of this experiment is to examine the possible beneficial effects of running relative to caffeine-induced SIB. Female Sprague Dawley rats (n = 4) served as subjects with each having a different extended baseline and treatment condition. Visual analysis of a multiple baseline graph did not support the hypothesis that as treatment (physical activity) was implemented SIB would decrease. It was found that subjects who drank more caffeinated water had higher amounts of …

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Enriched Vs Impoverished Housing: Food Choice And Consumption, Berenice Martinez Dec 2011

Enriched Vs Impoverished Housing: Food Choice And Consumption, Berenice Martinez

Theses and Dissertations - UTB/UTPA

This study focused on the relationship between environmental setting, eating choices and food intake. Ten Swiss Webster female subjects were socially housed under impoverished environmental conditions and ten under enriched housing conditions. Subjects were exposed to a nutritious food and sweet fat-laden food diet together with ad lib access to regular tap water on a 12 h light and dark cycle for four weeks. Results showed that an impoverished environment does not lead to an increase in body weight (t(6)= 0.293, p > .05) and environmental manipulations do not delineate a preference for diet type (t(6)= .877, p >.05). Further research …

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Change Detection Memory In Rhesus Monkeys And Humans, Lauren C. Elmore Dec 2011

Change Detection Memory In Rhesus Monkeys And Humans, Lauren C. Elmore

Dissertations and Theses (Open Access)

Visual short-term memory (VSTM) is the storage of visual information over a brief time period (usually a few seconds or less). Over the past decade, the most popular task for studying VSTM in humans has been the change detection task. In this task, subjects must remember several visual items per trial in order to identify a change following a brief delay interval. Results from change detection tasks have shown that VSTM is limited; humans are only able to accurately hold a few visual items in mind over a brief delay. However, there has been much debate in regard to the …

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The Relationship Between Physical Activity And Cognitive Symptoms Of Depression, Katy Manganella Dec 2011

The Relationship Between Physical Activity And Cognitive Symptoms Of Depression, Katy Manganella

Psychology and Counseling Theses

Existing research on exercise habits typically focuses on the physical health benefits. However, this research tends to neglect the potential psychological benefits of exercise. The present research adopts a different perspective by investigating the relationship between exercise and different symptom types of depression. By establishing the amount of physical activity participants consider to constitute exercising on a regular basis, participants were separated into self-reported high and low-exercise groups and completed the Zung-Self Rating Depression Scale. By employing a factor analysis of the Zung SDS, the results were analyzed assessing each symptom type of depression: Cognitive, affective, and somatic. Results suggest …

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Outcomes Of Rotator Cuff Surgery In Utah Workers’ Compensation Patients, Jennifer R. Grewe Dec 2011

Outcomes Of Rotator Cuff Surgery In Utah Workers’ Compensation Patients, Jennifer R. Grewe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The rotator cuff is responsible for the lifting function of the shoulder and the circular movement of the arm. Rotator cuff injuries are the most common problem for the shoulder and account for approximately 4.1 million annual physicians visits. Approximately 20.7% of the population has at least one rotator cuff tear and more than 75,000 individuals will have rotator cuff surgery each year. Medical and compensation costs associated with a rotator cuff surgery are increasing and current estimated annual costs exceed 2 billion dollars. The increasing prevalence and cost associated with rotator cuff injuries in the United States population represents …

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Trajectories Of Psychological Distress Among Low-Income, Female Survivors Of Hurricane Katrina, Sarah Ryan Lowe Dec 2011

Trajectories Of Psychological Distress Among Low-Income, Female Survivors Of Hurricane Katrina, Sarah Ryan Lowe

Graduate Doctoral Dissertations

The purpose of this study was to investigate trajectories of psychological distress among low-income women, primarily unmarried and African American, who survived Hurricane Katrina (N = 386). Data were collected in the year prior to the hurricane, as well as approximately one and three years thereafter. Using Latent Class Growth Analysis (LCGA), we detected six distinct trajectory groups. Over half of participants fit into a trajectory consistent with resilience; that is, they maintained low levels of psychological distress over the course of the study, but experienced an elevation in symptoms at the first pre-disaster time point, followed by a return …

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Evolution, Terror Management Theory, And Humans’ Relationship With Nature, Joshua Warren Vinocour Nov 2011

Evolution, Terror Management Theory, And Humans’ Relationship With Nature, Joshua Warren Vinocour

Dissertations

This study investigated the savannah hypothesis, an evolutionary explanation for human environmental preference. It aimed to address some of the methodological shortcomings of prior research while simultaneously investigating the role of non-evolutionary influences, such as existential anxiety and individual differences. Ninety-eight undergraduate participants were shown photos of Natural, Mixed, and Built settings and rated the visual attractiveness of each photo. Results showed that Built scenes were preferred over Natural and Mixed scenes, in contradiction to the savannah hypothesis. Existential anxiety, however, did not appear to influence photo ratings. Individual differences, such as ethnicity and the quality participants’ previous outdoor experiences …

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The Effect Of Sexblindness And Sexawareness On Workplace Related Gender Bias, Katie Nichol Nov 2011

The Effect Of Sexblindness And Sexawareness On Workplace Related Gender Bias, Katie Nichol

Theses and Dissertations

The present study was an adaptation of Richeson and Nussbaum's (2004) study of racism to gender bias. Two different gender ideologies were theoretically analyzed, then the influence of these ideologies on implicit and explicit forms of gender bias was examined. Psychology undergraduates were presented with a prompt promoting either a sexblind or sexaware approach to reducing gender bias. Participants then completed a measure of implicit (IAT Gender/Career) and explicit (MAWWWS) bias. Results suggested that, relative to the sexaware perspective, the sexblind perspective generated less implicit gender bias. There was no difference between ideological groups on the explicit measure. The findings …

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Learned Recognition And Avoidance Of Invasive Mosquitofish By The Shrimp, Paratya Australiensis, Joshua D. Bool, Kristen Whitcomb, Erin Kydd, Culum Brown Nov 2011

Learned Recognition And Avoidance Of Invasive Mosquitofish By The Shrimp, Paratya Australiensis, Joshua D. Bool, Kristen Whitcomb, Erin Kydd, Culum Brown

Sentience Collection

Little is known about the learning ability of crustaceans, especially with respect to their anti-predator responses to invasive species. In many vertebrates, anti-predator behaviour is influenced by experience during ontogeny. Here, predator-naïve glass shrimp (Paratya australiensisis) were exposed to a predatory, invasive fish species, Gambusia holbrooki, to determine whether shrimp could learn to: (1) avoid the scent of Gambusia via classical conditioning; and (2) restrict their activity patterns to the night to reduce predatory encounters. Conditioned shrimp were placed in containers in aquaria containing Gambusia for 3 days during which time they could be harassed but not consumed by Gambusia. …

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Paradoxical Reversal Learning Enhancement By Stress Or Prefrontal Cortical Damage: Rescue With Bdnf., Carolyn Graybeal, Michael Feyder, Emily Schulman, Lisa M Saksida, Timothy J Bussey, Jonathan L Brigman, Andrew Holmes Nov 2011

Paradoxical Reversal Learning Enhancement By Stress Or Prefrontal Cortical Damage: Rescue With Bdnf., Carolyn Graybeal, Michael Feyder, Emily Schulman, Lisa M Saksida, Timothy J Bussey, Jonathan L Brigman, Andrew Holmes

Brain and Mind Institute Researchers' Publications

Stress affects various forms of cognition. We found that moderate stress enhanced late reversal learning in a mouse touchscreen-based choice task. Ventromedial prefrontal cortex (vmPFC) lesions mimicked the effect of stress, whereas orbitofrontal and dorsolateral striatal lesions impaired reversal. Stress facilitation of reversal was prevented by BDNF infusion into the vmPFC. These findings suggest a mechanism by which stress-induced vmPFC dysfunction disinhibits learning by alternate (for example, striatal) systems.

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Motive Strength As A Predictor Of Goal Importance, Jeffrey Dohm Nov 2011

Motive Strength As A Predictor Of Goal Importance, Jeffrey Dohm

Master's Theses or Doctor of Nursing Practice

The present study sought to examine whether motivation as measured by 16 motives the Reiss Profile of Fundamental Goals and Motivation Sensitivities could predict the relative importance of goals as measured by the Aspiration Index. Five motive goal relationships were targeted as being prime candidates, Status – Popularity, Social Contact – Affiliation, Romance – Hedonism, Acceptance – Conformity, and Idealism – Community Feeling. 101 undergraduate students were administered both surveys. The results indicated that motivation did predict goal importance in all but one motive and goal pair. In addition, multiple regression analysis indicated motivation predicted goal importance for nine of …

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Event Perception, Gabriel A. Radvansky, Jeffrey M. Zacks Nov 2011

Event Perception, Gabriel A. Radvansky, Jeffrey M. Zacks

Psychological & Brain Sciences Faculty Research

Events are central elements of human experience. Formally, they can be individuated in terms of the entities that compose them, the features of those entities, and the relations amongst entities. Psychologically, representations of events capture their spatiotemporal location, the people and objects involved, and the relations between these elements. Here, we present an account of the nature of psychological representations of events and how they are constructed and updated. Event representations are like images in that they are isomorphic to the situations they represent. However, they are like models or language in that they are constructed of components rather than …

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Cognitive Bias Modification: Past Perspectives, Current Findings, And Future Applications, Paula T. Hertel, A. Mathews Nov 2011

Cognitive Bias Modification: Past Perspectives, Current Findings, And Future Applications, Paula T. Hertel, A. Mathews

Psychology Faculty Research

Research conducted within the general paradigm of Cognitive Bias Modification (CBM) reveals that emotional biases in attention, interpretation, and memory are not merely associated with emotional disorders but contribute to them. After briefly describing research on both emotional biases and their modification, we examine similarities between CBM paradigms and older experimental paradigms used in research on learning and memory. We also compare the techniques and goals of CBM research to other approaches to understanding cognition/emotion interactions. From a functional perspective, the CBM tradition reminds us to use experimental tools to evaluate assumptions about clinical phenomena and more generally, about causal …

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Tracking Development Of The Corpus Callosum In Fetal And Early Postnatal Baboons Using Magnetic Resonance Imaging, Kimberley A. Phillips, P. Kochunov Nov 2011

Tracking Development Of The Corpus Callosum In Fetal And Early Postnatal Baboons Using Magnetic Resonance Imaging, Kimberley A. Phillips, P. Kochunov

Psychology Faculty Research

Although the maturation of the corpus callosum (CC) can serve as a sensitive marker for normative antenatal and postnatal brain development, little is known about its development across this critical period. While high-resolution magnetic resonance imaging can provide an opportunity to examine normative brain development in humans, concerns remain over the exposure of developing fetuses to non-essential imaging. Nonhuman primates can provide a valuable model for normative brain maturation. Baboons share several important developmental characteristics with humans, including a highly orchestrated pattern of cerebral development. Developmental changes in total CC area and its subdivisions were examined across the antenatal (weeks …

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Levels Of Altruism, Martin Zwick, Jeffrey Alan Fletcher Nov 2011

Levels Of Altruism, Martin Zwick, Jeffrey Alan Fletcher

Complex Systems Faculty Publications and Presentations

The phenomenon of altruism extends from the biological realm to the human sociocultural realm. This paper sketches a coherent outline of multiple types of altruism of progressively increasing scope that span these two realms and are grounded in an ever-expanding sense of "self." Discussion of this framework notes difficulties associated with altruisms at different levels. It links scientific ideas about the evolution of cooperation and about hierarchical order to perennial philosophical and religious concerns. It offers a conceptual background for inquiry into societal challenges that call for altruistic behavior, especially the challenge of environmental and social sustainability.

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Individual Differences In Anxiety Sensitivity: The Role Of Emotion Regulation And Alexithymia, Amrit Kaur Oct 2011

Individual Differences In Anxiety Sensitivity: The Role Of Emotion Regulation And Alexithymia, Amrit Kaur

Master's Theses and Doctoral Dissertations

The literature has shown anxiety sensitivity to be a significant risk factor in the development of pathological anxiety. Recent theoretical models have also emphasized the additional importance of emotion regulation in predicting the development of anxiety disorders. The present study examined the interactive influence of anxiety sensitivity and emotion regulatory strategies on anxiety symptoms in an ethnically diverse sample recruited in Singapore in order to determine the most appropriate anxiety prevention strategies to pursue. Results indicate that emotion regulation skills had a much greater effect on anxiety levels in this non-clinical sample than anxiety sensitivity and, second, that emotion regulation …

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The Effectiveness Of A Substance Abuse Treatment Group For At Risk College Students, Melissa D. Simundson Oct 2011

The Effectiveness Of A Substance Abuse Treatment Group For At Risk College Students, Melissa D. Simundson

Doctoral Dissertations

There has been limited research in the area of treatment effectiveness for college students who abuse substances (e.g., alcohol, marijuana). There is no published research to date that addresses the effectiveness of college students' substance abuse counseling groups utilizing therapeutic reactance as a covariate. The purpose of this study was to examine the effectiveness of motivational interviewing and cognitive therapy techniques with a university counseling center substance abuse group and the extent to which group members' levels of reactance influence the treatment outcome. There were 35 college students approximately 18-25 years of age in six groups with an average of …

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African Elephants Change Gaits When Walking Downhill, Robert H.I. Dale, Robert Warren, Brock Ward, Eric Noble Oct 2011

African Elephants Change Gaits When Walking Downhill, Robert H.I. Dale, Robert Warren, Brock Ward, Eric Noble

Scholarship and Professional Work - LAS

Abstract from the International Elephant and Rhino Conservation and Research Symposium, Rotterdam, NL, October 10-14, 2011.

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