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2021

Brain

Articles 1 - 10 of 10

Full-Text Articles in Social and Behavioral Sciences

Upper And Lower Limb Motor Function Correlates With Ipsilesional Corticospinal Tract And Red Nucleus Structural Integrity In Chronic Stroke: A Cross-Sectional, Roi-Based Mri Study, Denise M. Peters, Julius Fridriksson, Jessica D. Richardson, Jill C. Stewart, Chris Rorden, Leonardo Bonilha, Addie Middleton, Stacy L. Fritz Nov 2021

Upper And Lower Limb Motor Function Correlates With Ipsilesional Corticospinal Tract And Red Nucleus Structural Integrity In Chronic Stroke: A Cross-Sectional, Roi-Based Mri Study, Denise M. Peters, Julius Fridriksson, Jessica D. Richardson, Jill C. Stewart, Chris Rorden, Leonardo Bonilha, Addie Middleton, Stacy L. Fritz

Faculty Publications

Background. Structural integrity of the ipsilesional corticospinal tract (CST) is important for upper limb motor recovery after stroke. However, additional neuromechanisms associated with motor function poststroke are less well understood, especially regarding the lower limb. Objective. To investigate the neural basis of upper/lower limb motor deficits poststroke by correlating measures of motor function with diffusion tensor imaging-derived indices of white matter integrity (fractional anisotropy (FA), mean diffusivity (MD)) in primary and secondary motor tracts/structures. Methods. Forty-three individuals with chronic stroke (time poststroke, 64.4 ± 58.8 months) underwent a comprehensive motor assessment and MRI scanning. Correlation and multiple regression analyses were …

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Age-Related Changes In Diffuse Optical Tomography Sensitivity Profiles In Infancy, Xiaoxue Fu, John E. Richards Jun 2021

Age-Related Changes In Diffuse Optical Tomography Sensitivity Profiles In Infancy, Xiaoxue Fu, John E. Richards

Faculty Publications

Diffuse optical tomography uses near-infrared light spectroscopy to measure changes in cerebral hemoglobin concentration. Anatomical interpretations of the location that generates the hemodynamic signal requires accurate descriptions of diffuse optical tomography sensitivity to the underlying cortical structures. Such information is limited for pediatric populations because they undergo rapid head and brain development. The present study used photon propagation simulation methods to examine diffuse optical tomography sensitivity profiles in realistic head models among infants ranging from 2 weeks to 24 months with narrow age bins, children (4 and 12 years) and adults (20 to 24 years). The sensitivity profiles changed systematically …

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Faculty Perspectives On Neuroscience Interdisciplinary Integration: A Descriptive Study From The American University In Cairo, Sondos Mohamed Moshtohry May 2021

Faculty Perspectives On Neuroscience Interdisciplinary Integration: A Descriptive Study From The American University In Cairo, Sondos Mohamed Moshtohry

Theses and Dissertations

The interdisciplinary approach and the science of the brain are successfully wedded. Globally, neuroscience is expanding and offering substantial advances and versatile applications within various domains affirming the worthiness of its investments; however, nationally, a similar engagement with the field is not evident. This study proposes the integrative research cloud model as a framework for interdisciplinary engagement. The American University in Cairo (AUC) is known for its forward-looking strategy and belief in interdisciplinarity that is why it was chosen as the setting for this study. Accordingly, the opinions and perspectives of its faculty from the different schools and departments on …

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Mapping Out The Scientific Literature On Cerebral Palsy: A Web Of Science-Based Analysis (1990-2020), Akhtar Hussain, Shakil Ahmad, Diwan Israr Khan, Mohammad Shakir Azad May 2021

Mapping Out The Scientific Literature On Cerebral Palsy: A Web Of Science-Based Analysis (1990-2020), Akhtar Hussain, Shakil Ahmad, Diwan Israr Khan, Mohammad Shakir Azad

Library Philosophy and Practice (e-journal)

The study’s main purpose was to map Cerebral Palsy (CP), a bibliometric analysis of the highly cited research output, 1990-2020. The web of science database was used to retrieve all records related to CP. The Impact Factor of the reviews has been taken from the 2019 issue of Clarivate Analytics’ Journal Citation Report (JCR), named IF2019. The Hirsch Index (h-Index) has been compiled from the most active writers and organizations database. The co-citation networks between efficient authors of highly cited papers were used by Biblioshiny, ScientoPy, and VOS viewer. The study’s main findings were that the USA was the most …

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Effect Of Environmental Enrichment On The Brain And On Learning And Cognition By Animals, Thomas R. Zentall Mar 2021

Effect Of Environmental Enrichment On The Brain And On Learning And Cognition By Animals, Thomas R. Zentall

Psychology Faculty Publications

The humane treatment of animals suggests that they should be housed in an environment that is rich in stimulation and allows for varied activities. However, even if one’s main concern is an accurate assessment of their learning and cognitive abilities, housing them in an enriched environment can have an important effect on the assessment of those abilities. Research has found that the development of the brain of animals is significantly affected by the environment in which they live. Not surprisingly, their ability to learn both simple and complex tasks is affected by even modest time spent in an enriched environment. …

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Understanding The Traumatized Brain, Sam Marion, Elizabeth Marston Mar 2021

Understanding The Traumatized Brain, Sam Marion, Elizabeth Marston

National Youth Advocacy and Resilience Conference

Students who have experienced trauma are often in need of behavioral intervention due to challenging behaviors and reactivity. Understanding the body’s threat response system gives insight into these behaviors and allows for empathy within the interventions. This presentation will outline basic neuroscience theories, propose interventions focused on self-regulation, and demonstrate how adding basic elements to existing interventions can increase efficacy.

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Golf Brain: A Neuropsychological Study Of Performance In Competition, Taylor S. Broughton Feb 2021

Golf Brain: A Neuropsychological Study Of Performance In Competition, Taylor S. Broughton

Doctor of Psychology (PsyD)

Golf, as a sport, has been described by its masters as a mental game first and a technical skill second. Many players logged countless practice hours only to find suboptimal performance in tournaments; when it matters the most. I investigated the relationship between executive functioning specific to decision-making under anxious arousal and golfers’ performance under anxious arousal. I used a repeated measures design including variety of executive functioning tests to examine participants’ abilities. Participants were recruited from western Oregon including collegiate golfers and university students, and were grouped into non-golfers and golfer groups based on whether they played golf and …

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Effects Of Mindfulness Meditation On Selective, Sustained Attention, Brain Neural Oscillations, And Short-Term Memory, Anamaria Guzman Feb 2021

Effects Of Mindfulness Meditation On Selective, Sustained Attention, Brain Neural Oscillations, And Short-Term Memory, Anamaria Guzman

Honors Theses

The following extended literature review and research proposal study started initially as a complete research proposal but, due to the challenges COVID-19 has brought, it has become a stand-alone piece of work without data collection. The goal is to synthesize a broad range of literature and previous research on mindfulness meditation and its effects on attention, memory, and brain activity and thus, offering a new perspective and a proposed research path on this subject. This proposed research study, besides previous studies, indicates that mindfulness meditation is expected to improve and enhance selective and sustained attention, which results in better attentional …

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Methamphetamine-Induced Modulation Of Anxiety/Depressive-Like Behaviors And Hpa Axis Output : Contributing Factors Within Stress Associated Brain Regions, Jason Jacobskind Jan 2021

Methamphetamine-Induced Modulation Of Anxiety/Depressive-Like Behaviors And Hpa Axis Output : Contributing Factors Within Stress Associated Brain Regions, Jason Jacobskind

Legacy Theses & Dissertations (2009 - 2024)

Methamphetamine (MA) is a psychostimulant drug of addiction that induces a wide range ofeffects. Among its many side effects is the potentiation of cellular, physiological, and behavioral changes in the stress response system. Upon exposure, the hypothalamic-pituitary-adrenal (HPA) axis is initiated. This process entails many factors. Receiving input from other brain regions, the paraventricular nucleus (PVN) of the hypothalamus secretes corticotropin-releasing factor (CRF) and arginine vasopressin into the anterior pituitary gland. These together stimulate the synthesis and release of adrenocorticotropic hormone, which circulates via the blood stream to cause the release of glucocortoicoids, the stress hormone (CORT). Binding of glucocorticoids …

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Music And Its Effects On The Brain, Caitlyn Herron Jan 2021

Music And Its Effects On The Brain, Caitlyn Herron

Williams Honors College, Honors Research Projects

This paper will discuss, in short, how music influences our brain, as well as some behavioral and physiological effects as a result. The brain consists of many regions responsible for different cognitive processes, such as learning, memory, recall, speech, and our emotions. It has been found that music helps to facilitate all of these cognitive processes, regardless of its emotional valence or whether the music is active or passive, such as singing or listening to it, respectively. It was discovered that music influences our ability to learn novel concepts related to mathematics, reading, and even language acquisition. It was also …

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