Medicine and Health Sciences Commons^™

Neural Correlates Of Fear Extinction: Investing The Impact Of Puberty And Sex In Children And Adolescents Through Neuroimaging, Sneha Bhargava, Clara Zundel, Samantha Ely, Carmen Carpenter, Reem Tamimi, Leah Gowatch, Mackenna Shampine, Emilie-Clare O'Mara, Jovan Jande, Shravya Chanamolu, Ahmad Almaat, Hilary Marusak

Medical Student Research Symposium

Fear-based disorders, including anxiety and posttraumatic stress disorder, are more prevalent in females than males. Steroid hormones (e.g., estradiol) are involved in fear extinction learning and later recall—a process implicated in the pathophysiology of fear-based disorders. Fear-based disorders commonly emerge during the transition from childhood to adolescence, a period marked by the onset of puberty and a natural increase of steroid hormones. Here, we examined the effects of puberty, sex, and their interaction on extinction recall and underlying neural circuitry in youth. Eighty-five youth (6-17 years, 46% female) completed a two-day Pavlovian fear extinction paradigm while undergoing functional magnetic resonance …

Exploring The Neural Correlates Of Mindfulness-Based Interventions In Youth, Jovan Jande, Clara Zundel, Samantha Ely, Sneha Bhargava, Carmen Carpenter, Reem Tamimi, Leah Gowatch, Mackenna Shampine, Emilie-Clare O'Mara, Shravya Chanamolu, Hilary Marusak

Medical Student Research Symposium

Mindfulness based interventions (MBI) reduce the severity of anxiety and depression among a variety of populations. While the psychological benefits of MBIs are increasingly recognized, less is known about the underlying neural correlates—particularly during childhood and adolescence, a time when many psychopathologies begin to emerge. Here, we provide the first systematic review on the neural correlates of MBI in youth. We reviewed the PubMed database for original articles examining the neural correlates of MBI in youth (0-18 years) leveraging neuroimaging. The search yielded 331 studies, of which 13 were included in the review. These studies comprised 451 participants and were …

M-Chat Implementation Strategies To Improve Autism Screening Rates In Pediatric Clinics In Metro Detroit, Karamoja Monchamp

Medical Student Research Symposium

The Modified Checklist for Autism in Toddlers (M-CHAT) is the most widely used autism screening tool. However, current practices for M-CHAT roll-outs and follow-ups are not wide-reaching, culturally sensitive, or consistent. This study aims to address the existing barriers to universal autism screenings and design a sustainable implementation strategy for a successful M-CHAT roll-out. We implemented strategies in five Henry Ford Health pediatric clinics, incorporating iPad-administered M-CHAT in waiting rooms, multilingual options, task shifting for referrals, forced choice mechanisms, and audit-and-feedback support. A Clinical Screening Dashboard tracked real-time M-CHAT data, including demographic information, collected from EPIC. Our goal is to …

Group-Based Four-Dimensional Brain Mapping Of Executive Control, Matthew T. Brennan, Kazuki Sakakura Md, Masaki Sonoda Md, Phd, Aimee Luat Md, Neena Marupudi, Sandeep Sood Md, Eishi Asano Md, Phd

Medical Student Research Symposium

Rationale: Humans utilize executive control processes to carry out non-automatic tasks. These tasks require coordination from higher brain centers to both suppress inappropriate behaviors and initiate correct responses. The goal of this study is to generate a novel, dynamic brain atlas to visualize and understand the network dynamics underlying executive control.

Methods: We studied 547 non-epileptic intracranial electrode sites sampled from seven patients with focal epilepsy. Each patient performed two types of verbal tasks: word-reading and Stroop color-naming. Mixed model analysis compared high-gamma cortical activation prior to response onset between the word-reading and Stroop color-naming tasks. Based on mixed model …

Childhood-Onset Attention-Deficit/Hyperactivity Disorder Exacerbates Opioid Use Disorder Consequences: Mediation By Impulsive Phenotypes, Liam R. Browning, Ciara Cannoy, Tabitha E. H. Moses, Leslie H. Lundahl Phd, David M. Ledgerwood Phd, Mark K. Greenwald Phd

Medical Student Research Symposium

Background: Attention deficit hyperactivity disorder (ADHD) is highly prevalent and associated with opioid use disorder (OUD). Yet, little is known about the mechanisms by which ADHD (which is a heterogeneous construct/diagnosis) might alter the trajectory of OUD outcomes.

Aim: This cross-sectional study examines relationships between childhood ADHD (inferred as predating substance use) and the extent to which the effects of ADHD on lifetime heroin-use consequences are mediated by foreshortened time perspective and drug-use impulsivity.

Methods: Individuals who report heroin use (N=214) were screened using the Assessment of Hyperactivity and Attention (AHA), Impulsive Relapse Questionnaire (IRQ), Stanford Time Perception Inventory (STPI), …

Glutamate, And Its Relationship To Task-Induced Functional Connectivity In The Human Brain: A Focus On Schizophrenia, Kathleen Liu Young, John Kopchick, Jeffrey Stanley, Vaibhav Diwadkar

Medical Student Research Symposium

Glutamate is the brain’s major excitatory neurotransmitter mediating both neuroplasticity and network function (Zhou & Danbolt, 2014). Basal glutamate (Glu) measured using proton magnetic resonance spectroscopy (1H-MRS) provides insight into a region’s density of neuropil related to the glutamatergic system. Moreover, given the role of glutamate in mediating brain network function, Glu levels may play a role in the brain’s functional connectivity (FC), which is typically estimated from functional magnetic resonance imaging (fMRI) time series data. These questions converge when considering the clinical syndrome of schizophrenia (SCZ). Patients with SCZ show abnormalities in basal Glu in the hippocampus and prefrontal …

Factors Associated With Suicide Mortality Among Childbearing-Aged Individuals: A Case-Control Study, Katerina A. Furman, Amy Loree Phd, Leah Hecht Phd, Katerina Furman Md Candidate, Lyuba Gavrilova Bs, Hsueh-Han Yeh Phd, Catherine Frank Md, Brian Ahmedani Phd

Medical Student Research Symposium

Purpose: Examine pregnancy-related, demographic, psychosocial and healthcare utilization factors among childbearing-aged individuals who were pregnant, postpartum or who experienced pregnancy loss

Methods: Data from nine health care systems in the Mental Health Research Network was included in this sample. A case-control study design was used in which 290 childbearing-age individuals who died by suicide (cases) from 2000-2015 were matched with 10 childbearing-age individuals from the same healthcare system and enrolled during the same time period who did not die by suicide (n=2,900). Conditional logistic regression was used to analyze associations between pregnancy/postpartum/pregnancy loss status and suicide.

Results: …

The Impact Of Trauma Subtypes On Ptsd Severity In Syrian Child And Adolescent Refugees, Liza Hinchey, Lana Grasser, Bassem Saad, Kathleen Gorski, Arash Javanbakht, May Chammaa

Medical Student Research Symposium

Background:

Child and adolescent refugee populations are at increased risk for psychiatric disorders including posttraumatic stress disorder (PTSD) and anxiety. Recent studies have demonstrated different symptomatology based on the type(s) of traumatic events experienced. Cluster analyses based on the Life Events Checklist (LEC) indicate three trauma subtypes: accidental/injury, victimization, and predominant death threat. Extending this line of research from adults to youth may lead to better understanding of the unique impacts of trauma subtypes on symptoms for improved prediction of risk and resilience.

Methods:

Refugee participants were recruited within 1 month of their resettlement in the U.S. Data used were …

Norepinephrine Regulation Of Spatial Memory Using The Barnes Maze In Male And Female Rats, Serena Simpson, Ali Gheidi Phd, Nareen Sadik, Cameron J. Davidson Phd, Shane A. Perrine Phd

Medical Student Research Symposium

The role of norepinephrine (NE) in learning and memory has been extensively studied, yet its contribution remains to be clarified. This study aimed to investigate the role of NE on spatial learning and memory in female and male rats using a Barnes maze assay. We used N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP-4), a specific noradrenergic neurotoxin that can cross the blood brain barrier, to deplete NE stores. We hypothesized that brain NE ablation would attenuate spatial learning and memory in rats. Loss of NE by DSP-4 was determined by measuring NE (and dopamine and serotonin) levels in several brain regions using HPLC. For the …

Learning Without Contingencies Induces Higher Order Asynchrony In Brain Networks In Schizophrenia, Elizabeth L. Martin, Asadur Chowdury, Vaibhav Diwadkar, Sazid Hasan, Munajj Ul-Huq, Shahira Baajour, Dalal Khatib, Usha Rajan, Jeffrey Stanley

Medical Student Research Symposium

Schizophrenia (SCZ) is characterized by both cognitive and reward impairments. A recent study suggests that SCZ is associated with a loss of synchrony between learning and reward circuits (Robison et al., 2019) and higher levels of dis-organization of functional brain networks may underpin failures in learning that characterize SCZ (Hütt et al., 2014). Therefore, here we examined inter-group (HC ≠ SCZ) 4^th order differences in statistical regularity across a connectome of cognition and reward brain circuits. The analyses were conducted on fMRI time series data from a previous learning paradigm (Stanley et al., 2017) with periods of Encoding and …

Role Of Oxidative Stress And Neuroinflammation Response In Pain Brain Regions After Traumatic Brain Injury, Alyssa Goodwin, Julia Malewicz, Scott Lloyd, Min Wu, Kelly Bosse, Alana Conti

Medical Student Research Symposium

Traumatic brain injury (TBI) affects approximately 3 million people annually, with 70-80% presenting with pain symptoms. Research has shown that increased reactive oxygen species (ROS) and neuroinflammation play a role in both pain and TBI, but the roles and interaction of oxidative stress and inflammation in TBI-related pain remain unclear. The purpose of the current study is to establish molecular data supporting proposed alterations in ROS and neuroinflammation in a mouse model of TBI in pain-related brain regions and to quantify how levels of these mediators change over time. Once the time course is determined, it will allow for optimal …

Resident Heart Rate Variability During Cataract Surgery, Ahmad Baiyasi, Shibandri Das, Ferris Bayasi, Faisal Ridha Al-Timimi

Medical Student Research Symposium

Purpose: To evaluate ophthalmology resident anxiousness and cardiovascular response by tracking resident heart rate (HR) when performing cataract surgery during their last year of residency.

Methods: A prospective analysis of 31 cataract cases, completed by three residents (two females and one male), at the Kresge Eye Institute in August and September 2020 was performed. Inclusion criteria for cases included all cataract cases performed by PGY-4 residents at the Kresge Eye Institute who downloaded the Heart Graph app supported by iOS. Residents with android mobile devices were excluded from the study. Informed consent was obtained from all residents who utilized the …