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- Creators: Department of Psychology
Description
Brain-computer interface technology establishes communication between the brain and a computer, allowing users to control devices, machines, or virtual objects using their thoughts. This study investigates optimal conditions to facilitate learning to operate this interface. It compares two biofeedback methods, which dictate the relationship between brain activity and the movement of a virtual ball in a target-hitting task. Preliminary results indicate that a method in which the position of the virtual object directly relates to the amplitude of brain signals is most conducive to success. In addition, this research explores learning in the context of neural signals during training with a BCI task. Specifically, it investigates whether subjects can adapt to parameters of the interface without guidance. This experiment prompts subjects to modulate brain signals spectrally, spatially, and temporally, as well differentially to discriminate between two different targets. However, subjects are not given knowledge regarding these desired changes, nor are they given instruction on how to move the virtual ball. Preliminary analysis of signal trends suggests that some successful participants are able to adapt brain wave activity in certain pre-specified locations and frequency bands over time in order to achieve control. Future studies will further explore these phenomena, and future BCI projects will be advised by these methods, which will give insight into the creation of more intuitive and reliable BCI technology.
ContributorsLancaster, Jenessa Mae (Co-author) / Appavu, Brian (Co-author) / Wahnoun, Remy (Co-author, Committee member) / Helms Tillery, Stephen (Thesis director) / Barrett, The Honors College (Contributor) / Harrington Bioengineering Program (Contributor) / Department of Psychology (Contributor)
Created2014-05
Description
Collaborative learning is a potential technique for teachers to use to meet the diverse learning needs of the students in their classrooms. Previous studies have investigated the contexts in which the benefits of collaborative learning show greater presence. The most important factor found was the quality of the interactions. Studies have suggested that high achieving students are capable of improving the quality of interactions. This bears the question if prior knowledge plays an influence in the learning outcome of students in collaborative learning. Results show that high prior knowledge students do not face a detriment in having low prior knowledge students as a partner comparing to having another high prior knowledge student and that low prior knowledge students show significantly higher learning outcome when partnered with a high prior knowledge partner than with another low prior knowledge student. It is therefore likely that having a high prior knowledge student within a dyad improves the quality of interaction, resulting in greater learning outcome through collaborative learning.
ContributorsKeyvani, Kewmars (Author) / Chi, Michelene (Thesis director) / Wylie, Ruth (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor) / School of Life Sciences (Contributor)
Created2014-05
Description
The influence that agent-student interaction has on learning can have significant outcomes in an ITS. Agent-human relationships within ITSs possess elements modeled by teacher-student relationships in the classroom. As a result, student perceptions of pedagogical agents can affect learning outcomes. An efficient environment can depend upon the intention for which the virtual agent is designed. As researchers gain more knowledge on the effect that characteristics outside of language have on learning, agent pedagogies can begin to be developed and perfected. In this research, we investigate the role that the pedagogical agent's gender has in the learning process. Specifically, we examine whether gender of agent interacts with gender of student to influence variables related to affect and motivation in ITSs
ContributorsStone, Melissa Linn (Author) / McNamara, Danielle (Thesis director) / Snow, Erica (Committee member) / Barrett, The Honors College (Contributor) / School of Film, Dance and Theatre (Contributor) / Department of Psychology (Contributor)
Created2014-05
Description
Eat Drink Smoke is an illustrated journal/memoir about trauma, addiction and mental illness. It is a creative project wherein storytelling is used as therapy.
ContributorsGoldberg, Hannah (Author) / Soares, Rebecca (Thesis director) / Dombrowski, Rosemarie (Committee member) / School of Social Work (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
Childhood adversity, trauma and maltreatment have been linked to intimate partner violence (IPV) in adulthood, with many survivors experiencing revictimization. The majority of research in this area focuses on established adults, and does not highlight the mechanism between childhood adversity and IPV. This study examines the impact childhood adversity has on the perceived acceptability of less-obvious abusive behaviors, or “yellow flags”, in young adult romantic and friendly relationships amongst Arizona State University undergraduates (M age = 20.4). Hierarchical multiple regressions indicated that young adults are more permissive of yellow flag behaviors in their friendships, as does the frequency of said behavior. Age, sex, minority status, and type of adversity experienced are significantly correlated with increased acceptability and frequency. No significant findings were found for romantic relationships, but may have been limited by sample demographics and the pool from which participants were drawn.
ContributorsMartin, Beth (Author) / Black, Candace J. (Thesis director) / Cavanaugh Toft, Carolyn (Committee member) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Motor skill acquisition, the process by which individuals practice and consolidate
movement to become faster, more accurate and efficient, declines with age. Initial skill acquisition is dominated by cortical structures; however as learning proceeds, literature from
rodents and songbirds suggests that there is a transition away from cortical execution. Recent
evidence indicates that the reticulospinal system plays an important role in integration and
retention of learned motor skills. The brainstem has known age-rated deficits including cell
shrinkage & death. Given the role of the reticulospinal system in skill acquisition and older
adult’s poor capacity to learn, it begs the question: are delays in the reticulospinal system
associated with older adult’s poor capacity to learn?
Our objective was to evaluate if delays in the reticulospinal system (measured via the
startle reflex) and corticospinal system (measured via Transcranial Magnetic Stimulation (TMS) are correlated to impairment of motor learning in older adults. We found that individuals with fast startle responses resembling those of younger adults show the most improvement and retention while individuals with delayed startle responses show the least. We also found that there was no relationship between MEP latencies and improvement and retention. Moreover, linear regression analysis indicated that startle onset latency exists within a continuum of learning outcomes suggesting that startle onset latency may be a sensitive measure to predict learning deficits in older adults. As there exists no method to determine an individual’s relative learning capacity, these results open the possibility of startle, which is an easy and inexpensive behavioral measure and can be used to determine learning deficits in older adults to facilitate better dosing during rehabilitation therapy.
movement to become faster, more accurate and efficient, declines with age. Initial skill acquisition is dominated by cortical structures; however as learning proceeds, literature from
rodents and songbirds suggests that there is a transition away from cortical execution. Recent
evidence indicates that the reticulospinal system plays an important role in integration and
retention of learned motor skills. The brainstem has known age-rated deficits including cell
shrinkage & death. Given the role of the reticulospinal system in skill acquisition and older
adult’s poor capacity to learn, it begs the question: are delays in the reticulospinal system
associated with older adult’s poor capacity to learn?
Our objective was to evaluate if delays in the reticulospinal system (measured via the
startle reflex) and corticospinal system (measured via Transcranial Magnetic Stimulation (TMS) are correlated to impairment of motor learning in older adults. We found that individuals with fast startle responses resembling those of younger adults show the most improvement and retention while individuals with delayed startle responses show the least. We also found that there was no relationship between MEP latencies and improvement and retention. Moreover, linear regression analysis indicated that startle onset latency exists within a continuum of learning outcomes suggesting that startle onset latency may be a sensitive measure to predict learning deficits in older adults. As there exists no method to determine an individual’s relative learning capacity, these results open the possibility of startle, which is an easy and inexpensive behavioral measure and can be used to determine learning deficits in older adults to facilitate better dosing during rehabilitation therapy.
ContributorsRangarajan, Vishvak (Author) / Honeycutt, Claire (Thesis director) / Schaefer, Sydney (Committee member) / Harrington Bioengineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Poetry has served as my own personal emergency medicine throughout my entire life. Its ability to capture a moment in its entirety has allowed me to fully address my experiences so that I can use them as a source of personal growth rather than let them hinder me over time. For this same reason, I also believe poetry is the perfect medium to capture medical traumas. I based the poetry written in this collection on medical emergencies that I either personally experienced or witnessed firsthand shadowing the paramedics of the Anaheim Fire Department. Having the opportunity to witness medical emergencies from the perspective of first responders emphasized the uniqueness of professions in charge of handling emergency medical situations. One of the most important lessons learned from my experiences is that medical traumas are not rare, and an alarmingly high percentage of people will experience some sort of medical trauma in their lifetime. Therefore, it is incredibly important for people to be prepared to process the traumas and medical emergencies they will eventually encounter. The aim of Emergency Medicine is first and foremost to honor the individuals who are affected by medical emergencies and the first responders/emergency medical personnel who work tirelessly to preserve the lives of their patients. I also hope my poems serve as a reminder of the spontaneous nature of trauma and encourage readers to consider using poetry as a form of both healing and self-alignment. I am incredibly thankful for everyone who helped me complete this collection of poetry, however I am especially grateful for the direction given to me by Dr. Rosemarie Dombrowski.
ContributorsPoe, Campbell Riley (Author) / Dombrowski, Rosemarie (Thesis director) / Foote, Nicola (Committee member) / College of Health Solutions (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Children with cancer can experience decreased emotional health along with deteriorating
physical health compared to children without cancer. Many studies have been done to examine the effects of emotional distress and mental health on the cancer patient, as well as the role of familial support. It was found that children with cancer may suffer from depression, anxiety, PTSD, and socio-emotional problems as a result of the trauma of being diagnosed and treated for a pervasive, life-threatening disease. Late effects may also worsen co-morbid mental health disorders. Childhood cancer patients who experience co-morbid mental health problems of depression and anxiety end up having a longer duration of recovery, as well as a worsened outcome than others with a single disorder (Massie, 2004). It was also shown that family members are affected emotionally and mentally from dealing with childhood cancer. Not only is the cancer patient at risk for PTSD during or after treatment, but also family members (National Cancer Institute, 2015). Siblings of the child with cancer may experience feelings of loneliness, fear, and anxiety, as the parent’s attention is focused on the child suffering with cancer. According to the National Cancer Institute (2015), familial problems can affect the child’s ability to adjust to the diagnosis and treatment in a positive way. However, children with strong familial and social support adjust easier to living with cancer. A common theme found in literature is that regular mental health checkups during and after cancer treatment is important for quality of life. Therefore, it is important for all childhood cancer patients and their families to receive information about mental health awareness, as well as therapeutic interventions that are developed for families caring for a child with cancer.
physical health compared to children without cancer. Many studies have been done to examine the effects of emotional distress and mental health on the cancer patient, as well as the role of familial support. It was found that children with cancer may suffer from depression, anxiety, PTSD, and socio-emotional problems as a result of the trauma of being diagnosed and treated for a pervasive, life-threatening disease. Late effects may also worsen co-morbid mental health disorders. Childhood cancer patients who experience co-morbid mental health problems of depression and anxiety end up having a longer duration of recovery, as well as a worsened outcome than others with a single disorder (Massie, 2004). It was also shown that family members are affected emotionally and mentally from dealing with childhood cancer. Not only is the cancer patient at risk for PTSD during or after treatment, but also family members (National Cancer Institute, 2015). Siblings of the child with cancer may experience feelings of loneliness, fear, and anxiety, as the parent’s attention is focused on the child suffering with cancer. According to the National Cancer Institute (2015), familial problems can affect the child’s ability to adjust to the diagnosis and treatment in a positive way. However, children with strong familial and social support adjust easier to living with cancer. A common theme found in literature is that regular mental health checkups during and after cancer treatment is important for quality of life. Therefore, it is important for all childhood cancer patients and their families to receive information about mental health awareness, as well as therapeutic interventions that are developed for families caring for a child with cancer.
ContributorsBuchanan, Chantel Tatiana (Author) / Seeley, Bridget (Thesis director) / Bradley, Robert (Committee member) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
The desire for normalcy is constant, regardless of how unattainable one knows it is. As it seems, the harder one tries for a normal life, the harder it becomes to find it. The more life I experience, the more I realize that normalcy is a construct, completely based in generalizable concepts. Normal will vary from person to person, and even within that, life always provides plenty of deviations from the norm. Within those deviations lies trauma. Trauma is difficult to handle, period. It is even more difficult to handle alone. You Can't Cry While Drinking (Coffee) follows a collegiate arts student as she strives for normalcy while dealing with her mother's terminal diagnosis. This piece focus on alienation, mental health, relationships between women, and the damage that ignoring trauma can cause. It views her actions through the lens of comedy, as laughter can convey a vast and accessible range of emotions. Throughout my college career, I have gone through a significant amount of life stressors, beyond the traditional college work load. Instead of becoming overcome with grief from the traumas I have dealt with, I decided to analyze my life from an outside perspective, taking pieces to share with others. In my observations and experience, sharing stories of hardships with others is mutually beneficial. It allows the individual to come to terms with what they have experience while allowing others to not feel alone if they are struggling with their own lives. There is a considerable amount of comfort in the realization that one does not have to go through traumatic experiences alone. This creative project was performed March 2nd through the 5th. The public exposure was a substantial portion of the process, as sharing trauma was integral to the study of this thesis.
ContributorsGalbiati, Tess Angeline (Author) / Scott, Jason (Thesis director) / Eckard, Bonnie (Committee member) / Department of Psychology (Contributor) / School of Film, Dance and Theatre (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
Drospirenone (DRSP) is a novel, pharmacologically unique synthetic progestin with properties more similar to the endogenous progestogen, progesterone, than any other progestin currently on the market. While a significant amount of research has been conducted on the risks associated with DRSP, the impact of DRSP on cognition, especially in reference to learning and memory, is not well understood. However, it is imperative to fully understand the cognitive effects of DRSP, both alone and in combination with EE (as taken in a combined oral contraceptive [COC]), so that women and their physicians can make a fully-informed decision when deciding to take a DRSP-containing COC. Study 1 examined the effects of three doses of DRSP in order to determine the optimal dose for combining with EE, and found that the medium dose of DRSP (30 µg/day) enhanced spatial working memory performance. In Study 2, the medium dose of DRSP from Study 1 was combined with low (0.125 µg/day) and high (0.3 µg/day) doses of EE to examine the effects of DRSP as taken with EE in a COC. The results from Study 2 indicated that when DRSP was combined with a low, but not high, dose of EE, spatial working memory impairments were seen at the highest working memory load. Anxiety-like behavior was evaluated using the OFT, and DRSP was shown to decrease measures of anxiety-like behavior. Additionally, while treatment with a high dose of EE decreased several measures of anxiety-like behavior, a low dose of EE did not, suggestive of a dose response. Taken together, the findings presented from both studies suggest that some of the cognitive effects of the combination of DRSP with EE are different than those of either hormone administered on its own. Further exploration in a preclinical, ovary-intact animal model is a next step to fully understand these effects in the translational context of a contraceptive, given that women taking an EE-DRSP combination are typically ovary-intact.
ContributorsPoisson, Mallori Louise (Author) / Bimonte-Nelson, Heather (Thesis director) / Doane, Leah (Committee member) / School of Nutrition and Health Promotion (Contributor) / School of Molecular Sciences (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05