Medicine and Health Sciences Commons^™

Fusion Analysis Of Functional Mri Data For Classification Of Individuals Based On Patterns Of Activation., Mahdi Ramezani, Purang Abolmaesumi, Kris Marble, Heather Trang, Ingrid Johnsrude

Brain and Mind Institute Researchers' Publications

Classification of individuals based on patterns of brain activity observed in functional MRI contrasts may be helpful for diagnosis of neurological disorders. Prior work for classification based on these patterns have primarily focused on using a single contrast, which does not take advantage of complementary information that may be available in multiple contrasts. Where multiple contrasts are used, the objective has been only to identify the joint, distinct brain activity patterns that differ between groups of subjects; not to use the information to classify individuals. Here, we use joint Independent Component Analysis (jICA) within a Support Vector Machine (SVM) classification …

Deficits In Audiovisual Speech Perception In Normal Aging Emerge At The Level Of Whole-Word Recognition., Ryan A Stevenson, Caitlin E Nelms, Sarah H Baum, Lilia Zurkovsky, Morgan D Barense, Paul A Newhouse, Mark T Wallace

Brain and Mind Institute Researchers' Publications

Over the next 2 decades, a dramatic shift in the demographics of society will take place, with a rapid growth in the population of older adults. One of the most common complaints with healthy aging is a decreased ability to successfully perceive speech, particularly in noisy environments. In such noisy environments, the presence of visual speech cues (i.e., lip movements) provide striking benefits for speech perception and comprehension, but previous research suggests that older adults gain less from such audiovisual integration than their younger peers. To determine at what processing level these behavioral differences arise in healthy-aging populations, we administered …

Age Related Decline In Memory: Examining The Mediation Effect Of Processing, Executive Functioning And Intelligence In Normal Adults, Jada J. Stewart

Theses and Dissertations

Multiple mediation analyses that collectively examine the prominent theories of cognitive aging (i.e., Common Cause, Processing, and Executive Decline Hypotheses) along with other cognitive domains that are sensitive to aging are rare. Moreover, having identified that cognition begins to decline as early as 30 years old, few studies have examined the mechanisms that underlie memory change among younger aging individuals. As a result, it is unclear whether relevant mediating variables have been excluded from early research on age-related memory decline, or to what extent rehabilitative strategies are applicable as early interventions for maintaining cognitive functioning into late life.

The present …

Stability Of Self-Referent Encoding Task Performance And Associations With Change In Depressive Symptoms From Early To Middle Childhood., Brandon L Goldstein, Elizabeth P Hayden, Daniel N Klein

Brain and Mind Institute Researchers' Publications

Depressed individuals exhibit memory biases on the self-referent encoding task (SRET), such that those with depression exhibit poorer recall of positive, and enhanced recall of negative, trait adjectives (referred to as positive and negative processing biases). However, it is unclear when SRET biases emerge, whether they are stable, and if biases predict, or are predicted by, depressive symptoms. To address this, a community sample of 434 children completed the SRET and a depressive symptoms measure at ages 6 and 9. Negative and positive processing exhibited low, but significant, stability. At ages 6 and 9, depressive symptoms correlated with higher negative, …

Worlds Of Connection: A Hermeneutic Formulation Of The Interdisciplinary Relational Model Of Care, Susana Lauraine Mccune

Antioch University Full-Text Dissertations & Theses

Despite a general agreement across health care disciplines that Advanced Care Planning (ACP) and Advanced Directives (ADs) add important elements to a patient's end-of-life care desires, and can inform their loved ones and advocates, help create ease of mind, and enhance quality of care, they continue to remain significantly underused. More than half of Americans transition to chronic and terminal illness without having completed them. The aim of this study was to increase the frequency and enhance the quality of communication about Advance Directives and Advance Care Planning within the clinical relationship. The resulting Interdisciplinary Relational Model of Care (IRMOC) …

Loneliness And Perceived Stigmatization Among Older Adults Enrolled In Opiate Substitution Treatment Programs And The Utilization Of Mental Health Services, Jennifer B. Armstrong

Antioch University Full-Text Dissertations & Theses

Little research has examined the role that loneliness and perceived stigmatization play in the decision to seek mental health services among older adults enrolled in opiate substitution treatment. Researchers studying this at-risk population have called for more studies to examine services that can be implemented within current opiate substitution treatment settings. This study advances research in the field by utilizing standardized self-report measures to examine the relationship between loneliness, perceived stigmatization, and the impact of said variables on the utilization of available mental health services among older adults enrolled in opiate substitution treatment programs. Ninety-four 50-71-year-old adults from an opiate …