Cognitive Science Commons^™

Fornix Integrity And Reaction Time To Novel Scenes And Objects In Visual Recognition Memory, Melissa Elder

Dissertations, Theses, and Capstone Projects

The fornix of the hippocampus may play an important role in working and long-term visual recognition memory. Data from a study on the role of hippocampal subfields in visual recognition memory was used here in conjunction with diffusion tensor imaging of the fornix to assess the relationship between the fornix integrity and behavioral performance, including percentage correct and reaction times. Two tasks were employed to separately evaluate working and long-term visual recognition memory, using a combination of indoor and outdoor naturalistic scenes and everyday objects. The subjects included 32 healthy adults, aged 18-44 years whose tensor imaging tractography was obtained …

Flanker Task Performance In Young And Older Adults: A Behavioral And Erp Study, Fatima Medrano

Dissertations, Theses, and Capstone Projects

Research suggests that as we get older, executive function abilities decline (Hasher & Zacks, 1988; Salthouse, 1996). One affected ability is that of inhibitory control, which aids in monitoring our responses to non-target stimuli or information. Current research on inhibition reveals inconsistencies across studies. Monitoring brain responses during the Flanker (used to measure inhibitory control) task may add valuable insight into the processes underlying group differences behaviorally, by studying the N200 and P300 event-related potentials which have been associated with inhibitory control processes. This study investigated whether there are differences between older and younger adults in inhibitory control and whether …

Pre-Stimulus Anticipation And Unconscious Fear Learning Disparities In Individuals With Varying Levels Of Anxiety, Anastasiya Rumyantseva Kharlamova

Dissertations, Theses, and Capstone Projects

The current study employed a Pavlovian conditioning paradigm to investigate the influence of pre-stimulus unconscious threat anticipation on subsequent fear responses in associative learning. Additionally, we explored the differences in pre-stimulus anticipation among individuals with varying levels of anxiety. Electrodermal response (EDA) was chosen as a primary measure due to its robustness in fear conditioning paradigms. Moreover, the State-Trait Anxiety Inventory (STAI) was utilized to assess anxiety levels in participants. Twenty-seven subjects were recruited to determine if pre-stimulus skin conductance responses (SCR) would exhibit stimulus-specific patterns influenced by implicit cues (L-shaped configurations) that indicated an upcoming face or a house …

The Application Of Bayesian Meta-Analytic Models In Cognitive Research On Neurodevelopmental Disorders, Nic Zapparrata

Dissertations, Theses, and Capstone Projects

Meta-analysis is the systematic review and quantitative synthesis of specific areas in literature and is an important quantitative tool for researchers interested in synthesizing a particular body of research. The current research used meta-analysis to investigate processing speed in two neurodevelopmental disorders. This dissertation consisted of four meta-analytic papers. The first paper was a meta-analysis that synthesized a large body of research on processing speed, measured via reaction time (RT) measures, in groups of individuals diagnosed with autism spectrum disorder (ASD) versus age-matched neurotypical comparison groups. This research was motivated by two previous meta-analyses in the literature on processing speed …

Is Aggression In The Eye Of The Beholder?: An Eye-Tracking Study, Kemar P. Pickering

Dissertations, Theses, and Capstone Projects

The study of aggression offers opportunities to more deeply understand criminal behavior, personality and temperament. A deeper understanding of aggression has many implications in applied settings, including work, education and health. The knowledge gained may improve the treatment of behavioral misconduct and antisocial behavior. Additionally, the study of aggression has the potential to inform assessments of quality of life and development while offering information to guide early intervention and improve behavior trajectories.

Understanding aggression has many real-world applications, such as creating a better understanding of criminal activity, identifying who might be more likely to become a criminal, allowing for early …

Zoom Dysmorphia: An Eye-Tracking Study Of Self-View And Attention During Video Conferences, Kathleen H. Stimson

Cognitive Science Senior Theses

This study investigates Zoom Dysmorphia, a heightened self-awareness and self-criticism of perceived physical flaws due to prolonged self-view on video conferencing platforms, with associated behaviors resembling symptoms of Body Dysmorphic Disorder (BDD). Drawing on Veale’s (2001, 2004) and Neziroglu’s (2004) cognitive-behavioral models of BDD and prior studies on BDD which suggest the development and maintenance of BDD through excessive self-focused attention and attentional bias, this study explores the potential cognitive and emotional implications of this phenomenon. Participants engaged in two mock video conferences with self-view enabled in one meeting and disabled the other for comparison. Eye tracking technology monitored their …

What We Hear In Voices: Identifying Dimensionality In Speech Stimuli Trait Impressions, Caroline W. Conway

Cognitive Science Senior Theses

Is there dimensionality in how people form impressions of speakers? The first portion of the study generated trait terms via text survey responses to recordings from the Emotional Speech Database (ESD). Following the analysis of this initial data, a second survey invited subjects to rate the speaker on a specific trait for each of many ESD recordings. The trait terms were selected from the text responses from the first survey that were most strongly correlated via a mixed-effects model with the speaker of each recording rather than the emotion or sentence. Following an exploratory factor analysis of the trait ratings …

Examining Differences In Concept Representation Across Similarity Spaces Between Humans And Large Language Models, Krishnachandra Nair

Computer Science Senior Theses

The replication of human concept representation is a critical task for the pursuit of artificial general intelligence. With the recent influx of large language models that demonstrate text-generation capabilities nearly on par with humans, the question stands on whether these large language models can capture concepts within language. We examine this question by exploring differences in concept representation across similarity spaces between humans and LLMs. We find that, while concept representation within LLMs does partially mimic human concept representation, LLMs are greatly limited by their dependence on semantic information and cannot therefore develop an understanding of human social code or …

Usefulness Of Current Patient-Reported Outcome Scales For Acl Injury: A Mixed-Methods Evaluation Of Stakeholder-Perceived Utility Of Specific Constructs And Items Across The Rehabilitation Timeline, Erich Petushek, Jed A. Diekfuss, Joseph D. Lamplot, Anne-Inger Mørtvedt, Lauren C. Hoey, Kevin Heo, Camryn B. Petit, Kim D. Barber Foss, Shayla M. Warren, Alexis B. Slutsky-Ganesh, Charles D. Kenyon, April L. Mcpherson, Michael E. Biller, Michael Newsome, Brian Jennings, John W. Xerogeanes, Gregory D. Myer

Michigan Tech Publications

BACKGROUND: Numerous patient-reported outcome measures (PROMs) have been used in patients with anterior cruciate ligament reconstruction (ACLR), often with overlapping constructs of interest and limited content validity. Inefficient scale application increases burden and diminishes overall usefulness for both the patient and practitioner. PURPOSE: To isolate specific PROM items across a diverse set of constructs that patients and practitioners perceive as having the greatest value at various stages of recovery and return to sport (RTS) in patients after ACLR. STUDY DESIGN: Cross-sectional study. METHODS: A combined 77 stakeholders participated in this 2-phase mixed-methods investigation. In phase 1, a total of 27 …

Resonant Perceptions: Exploring Autistic Aesthetics Through Embodied Cognition, James Hutson, Piper Hutson

Ought: The Journal of Autistic Culture

This study investigates the nuanced realm of aesthetic preferences among individuals with Autism Spectrum Condition (ASC) compared to neurotypical individuals, addressing a significant gap in understanding the diverse perceptual experiences within the neurodiverse community. The impetus for this study stems from the growing recognition of neurodiversity and the need to appreciate how individuals with ASC uniquely experience and interpret their environment, particularly in the context of aesthetics. Employing a dual-method approach, the research integrates data from comprehensive surveys and in-depth interviews to construct a comparative analysis of aesthetic preferences and experiences. Participants encompassed a broad demographic spectrum, ensuring a diverse …

Embodied Co-Regulation: A Neuroregulatory-Informed Dance/Movement Therapy Transition Intervention Method For Arousal Regulation For Adolescents In A Partial Hospitalization Program, Anamaria Guzman

Expressive Therapies Capstone Theses

This thesis introduces a novel Dance/Movement Therapy (DMT) approach, focusing on nervous system arousal regulation during transitions between therapy groups. The core of the method involves a brief 5-minute exercise designed to modulate arousal levels, encompassing alertness and energy, aiming to establish a baseline homeostasis. Rooted in Polyvagal Theory and Developmental Neurobiology, the approach assumes the co-regulation of nervous systems within a group therapeutic setting. Two primary outcomes are self-assessed: 1) somatic experiences documented through narratives and 2) nervous system biodata measured using the Flowtime headband monitoring of brainwaves, heart rate, and other biomarkers. Results indicated that all six sessions …

Does Higher Socioeconomic Status Associate With Better Mental Health Outcomes Among Primary Caregivers In Rural China?, Wenwen Zhang

Master's Theses

This study explores the intricate relationship between socioeconomic status (SES) and the mental health outcomes of primary caregivers in rural China, focusing on the Early Childhood Development (ECD) context in Ya'an. Anchored in a major intervention project launched in 2023, the study critically examines the hypothesis that higher socioeconomic status correlates with lower levels of negative emotions among caregivers.

Utilizing cross-sectional data, the research investigates how educational attainment and household income influence caregivers' mental health, measured through the DASS-21 score in three dimensions: stress, anxiety, and depression. The findings reveal that higher household income and educational levels are significantly associated …

Euclidean Coordinates Are The Wrong Prior For Models Of Primate Vision, Garrison W. Cottrell

MODVIS Workshop

Convolutional Neural Networks (CNNs) are currently the best models we have of the ventral temporal lobe – the part of cortex engaged in recognizing objects. They have been effective at predicting the firing rates of neurons in monkey cortex, as well as fMRI and MEG responses in human subjects. They are based on several observations concerning the visual world: 1) pixels are most correlated with nearby pixels, leading to local receptive fields; 2) stationary statistics – the statistics of image pixels are relatively invariant across the visual field, leading to replicated features 3) objects do not change identity depending on …

Perceptual Grouping With Latent Noise, Ben Lonnqvist, Zhengqing Wu, Michael H. Herzog

MODVIS Workshop

Humans effortlessly group elements into objects and segment them from the background and other objects without supervision. For example, the black and white stripes of a zebra are grouped together despite vastly different colors. A thorough theoretical and empirical account of perceptual grouping is still missing – Deep Neural Networks (DNNs), which are considered leading models of the visual system still regularly fail at simplistic perceptual grouping tasks. Here, we propose a counterintuitive unsupervised computational approach to perceptual grouping and segmentation: that they arise because of neural noise, rather than in spite of it. We show that adding noise in …

Anisotropy In Non-Rigidity Perception: The Role Of Anisotropies In Neural Populations, Akihito Maruya, Qasim Zaidi

MODVIS Workshop

No abstract provided.

Feature Integration And Spatial Localization For Attention Across The Visual Hierarchy, Joyce Tam, Chloe Callahan-Flintoft, Brad Wyble

MODVIS Workshop

The featural and spatial specificity of visual representations broadly decrease along the ventral visual stream. The selection of behaviorally relevant information, or attention, must therefore establish spatial correspondence across the visual hierarchy while maintaining behavioral guidance to relevant visual features. Moreover, selection is often accompanied by an inhibitory surround as well as selective inhibition of distractor items. Considering these key functions, we describe a biologically realistic computational theory of visual selection and inhibition through feedforward and feedback signals along the ventral visual stream, complemented by feature-agnostic spatial competition in the pulvinar nuclei. Our model simulates signature visual search behaviors and …

The Power Of Words: Unpacking Language's Role In Educational Inequities, Zara Yokohama, Liz Beccari, Malcolm Jasmin

Symposium Of University Research and Creative Expression (SOURCE)

The language used to describe racial disparities in education may inadvertently influence how we address them. Framing such disparities as “achievement gap” rather than as “inequality in educational outcomes” assumes a deficit thinking mindset, shifting focus from the structural injustices contributing to education disparities to individuals, resulting in decreased prioritization of racial equity (Quinn & Desruisseaux, 2022). We aim to replicate this prioritization effect, specify the language driving the effect, and examine the impact of frames on perceptions of how to achieve racial equity. Participants were randomly assigned to conditions framing racial equity concerns as: a racial achievement gap, racial …

Comparing Executive Control: Bilingualism's Cognitive Advantage, Malcolm Jasmin, Tonya Buchanan Ph.D.

Symposium Of University Research and Creative Expression (SOURCE)

The Stroop Task is a widely used method for studying executive control. It helps to understand cognitive processes like inhibition and attentional regulation to examine how reading text and naming colors can interfere with each other. The study intends to use the Stroop Task to explore the executive control abilities of both bilingual and monolingual individuals. Previous research has shown that bilingual individuals perform better in the Stroop test compared to those who only speak one language (Bialystok et al., 2010). The impact of this advantage is believed to be due to the need to switch between languages and prevent …

Improving Ethics Surrounding Collegiate-Level Hacking Education: Recommended Implementation Plan & Affiliation With Peer-Led Initiatives, Shannon Morgan, Dr. Sanjay Goel

Military Cyber Affairs

Cybersecurity has become a pertinent concern, as novel technological innovations create opportunities for threat actors to exfiltrate sensitive data. To meet the demand for professionals in the workforce, universities have ramped up their academic offerings to provide a broad range of cyber-related programs (e.g., cybersecurity, informatics, information technology, digital forensics, computer science, & engineering). As the tactics, techniques, and procedures (TTPs) of hackers evolve, the knowledge and skillset required to be an effective cybersecurity professional have escalated accordingly. Therefore, it is critical to train cyber students both technically and theoretically to actively combat cyber criminals and protect the confidentiality, integrity, …

Using Digital Twins To Protect Biomanufacturing From Cyberattacks, Brenden Fraser-Hevlin, Alec W. Schuler, B. Arda Gozen, Bernard J. Van Wie

Military Cyber Affairs

Understanding of the intersection of cyber vulnerabilities and bioprocess regulation is critical with the rise of artificial intelligence and machine learning in manufacturing. We detail a case study in which we model cyberattacks on network-mediated signals from a novel bioreactor, where it is important to control medium feed rates to maintain cell proliferation. We use a digital twin counterpart reactor to compare glucose and oxygen sensor signals from the bioreactor to predictions from a kinetic growth model, allowing discernment of faulty sensors from hacked signals. Our results demonstrate a successful biomanufacturing cyberattack detection system based on fundamental process control principles.