Medicine and Health Sciences Commons^™

Developing Optogenetics/Electrophysiology Applications For Studying Cognitive Impairment During Stress, Brainscan, Western University, Wataru Inoue, Brian Allman, Julio Martinez-Trujillo

Project Summaries

We will develop cutting-edge techniques to:

• precisely measure and artificially manipulate the activity of CRH neurons in the PFC, and
• measure small and local releases of CRH by these neurons.

The success of our project will open the door to understand the neural mechanisms for how stress impairs cognitive functions and how it may contribute to mental disorders.

Attention Bias Modification Training As A Potential Preventative Tool, Brainscan, Western University, Elizabeth Hayden, Marc Joanisse, Pan Liu, Koraly Perez-Edgar, Thomas Olino

Project Summaries

We will use eye-tracking techniques to understand more about attentional bias and how it changes through ABM training.

Through neuroimaging, we will look at 'resting state functional connectivity', which is the activity and communication in the brain when a person is not engaging in any activity themselves. There are resting-state patterns of brain activity that have been identified in the brains of youth with depression, anxiety and related disorders, but we do not know if these brain patterns can be used to identify those at risk for these disorders. We also don't know if preventative approaches to depression and anxiety, …

Validating Methods For Using Noninvasive Brain Stimulation To Influence Auditory Perception, Brainscan, Western University, Jessica Grahn, Molly Henry, Blake Butler, Marc Joanisse, Stefan Everling

Project Summaries

We will be exploring the influence of a weak alternating current on neural activity at different frequencies to build a more complete picture of tACS. We will also incorporate EEG measurements to help us predict how the synchronization varies across individuals, to determine when to provide stimulation for each individual. Finally, we will vary the tACS stimulation and use participant behaviour as the measure to understand what stimulation timing produces the largest behavioural changes.

Uncovering The Neural Basis Of Cognitive Impairment Following Hearing Loss: An All-Optical Electrophysiology Approach, Brainscan, Western University, Brian Allman, Wataru Inoue

Project Summaries

We have access to state-of-the-art equipment that will enable us to visualize specific neuron types in animal models. This is a new approach that combines several recent advances in the field of 'optogenetics', a technique that uses light to control neurons. This approach will allow us to explore how hearing loss induced by loud noise exposure leads to abnormal neural activity in areas of the brain that control learning, memory and higher cognitive function.

The Effects Of Habits On Motor Skill Learning (Research Summary), Brainscan, Western University, Nicola J. Popp, Atsushi Yokoi, Paul Gribble, JöRn Diedrichsen

Research Summaries

Learning new motor skills can involve adopting motor habits that could help or hinder overall performance outcomes. Which habit(s) a participant adopt(s) can be induced early on through instruction. These motor habits can be rigid and persistent during motor skill training and practice but it is also possible to influence or change motor habits through training.

Persistent Post-Concussion Brain Changes In Adolescent Hockey Players, Brainscan, Western University, Kathryn Y. Manning, Amy Schranz, Robert Bartha, Gregory A. Dekaban, Christy Barreira, Arthur Brown, Lisa Fischer, Kevin Asem, Timothy J. Doherty, Douglas D. Fraser, Jeff Holmes, Ravi S. Menon

Research Summaries

Changes continue to occur in a concussed brain even after standard clinical tests have returned to normal. Damage in the very long fibre tracks in the brain of concussed players can be detected up to three months after the concussion and after the individuals have been approved for return to athletics. It is also possible to detect ‘hyper-connectivity’ in the brain, suggesting the brain is still trying to compensate for the concussion.

Familiar Voices Are More Intelligible, Even If They Are Not Recognized As Familiar, Brainscan, Western University, Emma Holmes, Ysabel Domingo, Ingrid Johnsrude

Research Summaries

This research has demonstrated that it’s easier to understand someone who is familiar to us (compared to someone unfamiliar) even if we can’t recognize them from their voice. As listeners, we focus on certain parts of speech sounds for specific purposes. For example, there may be some situations in which you can understand words spoken by your mother very well, better than you could understand a stranger in the same situation, even if you can’t tell that it’s your mother speaking.

Aging Is Associated With An Over-Sensitivity Of Brain Responses To Sounds, Brainscan, Western University, Björn Herrmann, Burkhard Maess, Ingrid S. Johnsrude

Research Summaries

Aging and hearing loss leads to increased neural responses to sounds in the auditory cortex compared to younger people. Enhanced neural activity to sound may be a physiological mechanism underlying the difficulty that older adults have with ignoring irrelevant sound information.

Preventing Noise-Induced Hearing Loss With A Novel Pharmaceutical, Brainscan, Western University, Brian Allman, Paul Walton, Shawn Whitehead, Patti Kiser, Brian Shilton, Sarah Hayes

Research Summaries

A targeted catalase, packaged and delivered via exosomes intranasally, provides protection for cochlear cells against oxidative stress, the kind of stress that results from loud noise exposure. It is able to cross the blood-brain barrier and does not result in negative outcomes elsewhere in the body.

Sexual Behaviors, Hiv Knowledge, Hiv Testing Attitudes And Recent Hiv Testing Among Female Entertainment Workers In Cambodia: A Cross-Sectional Study, Siyan Yi, Sovannary Tuot, Pheak Chhoun, Khuondyla Pal, Kolab Chhim, Chanrith Ngin, Carinne M. Brody

BACKGROUND: In Cambodian context, female entertainment workers (FEWs) are young women working at establishments such as karaoke bars, restaurants, beer gardens or massage parlors. FEWs may sell sex to male patrons and are considered a high-risk group for HIV. This study aimed to identify factors associated with recent HIV testing among FEWs in Cambodia to inform future prevention activities.

METHODS: Data were collected in 2014 as part of the evaluation of a larger HIV prevention project. A two-stage cluster sampling method was used to select participants from Phnom Penh and Siem Reap for face-to-face interviews using a structured questionnaire. A …

Social And Behavioural Factors Associated With Depressive Symptoms Among University Students In Cambodia: A Cross-Sectional Study, Chanrith Ngin, Khuondyla Pal, Sovannary Tuot, Pheak Chhoun, Rosa Yi, Siyan Yi

OBJECTIVE: To explore social and behavioural factors associated with depressive symptoms among university students in Cambodia.

DESIGN: Cross-sectional study.

SETTINGS: Two public universities-one in the capital city of Phnom Penh and another in Battambang provincial town.

PARTICIPANTS: This study included 1359 students randomly selected from all departments in the two universities using a multistage cluster sampling method for a self-administered questionnaire survey in 2015.

PRIMARY OUTCOME MEASURE: Depressive symptoms measured by using the Center for Epidemiologic Studies Depression scale. All measures in the study were self-reported.

RESULTS: The proportion of students with depressive symptoms and severe depressive symptoms were 50.6% …

A Mixed Methods Evaluation Of The “Aged-Up” Stac Bullying Bystander Intervention For High School Students, April D. Johnston, Aida Midgett, Diana M. Doumas, Steve Moody

Counselor Education Faculty Publications and Presentations

This mixed methods study assessed the appropriateness of an “aged-up,” brief bullying bystander intervention (STAC) and explored the lived experiences of high school students trained in the program. Quantitative results included an increase in knowledge and confidence to intervene in bullying situations, awareness of bullying, and use of the STAC strategies. Utilizing the consensual qualitative research methodology, we found students spoke about (a) increased awareness of bullying situations, leading to a heightened sense of responsibility to act; (b) a sense of empowerment to take action, resulting in positive feelings; (c) fears related to intervening in bullying situations; and (d) the …

Credibility Strategies Of Popular Health Websites: A Rhetorical Analysis Of Parkinson's Information Pages, Abigail Bakke

English Department Publications

Though using e-health is a common patient practice, unregulated and inaccurate online medical content can pose real dangers. To effectively convey important and accurate health messages, online health organizations must make their information stand out as trustworthy. To identify credibility strategies, I conducted a rhetorical analysis of Parkinson’s disease content from the two most popular U.S. health websites: NIH.gov and WebMD. Based on the range of credibility strategies identified in these webpages, I recommend that medical writers and e-health designers convey both expertise and trustworthiness to build credibility in their content.

Improving Temporal Accuracy Of Human Metabolic Chambers For Dynamic Metabolic Studies, Shanshan Chen, Erica Wohlers, Eric Ruud, Jon Moon, Bin Ni, Francesco S. Celi

Biostatistics Publications

Metabolic chambers are powerful tools for assessing human energy expenditure, providing flexibility and comfort for the subjects in a near free-living environment. However, the flexibility offered by the large living room size creates challenges in the assessment of dynamic human metabolic signals—such as those generated during high-intensity interval training and short-term involuntary physical activities—with sufficient temporal accuracy. Therefore, this paper presents methods to improve the temporal accuracy of metabolic chambers. The proposed methods include 1) adopting a shortest possible step size, here one minute, to compute the finite derivative terms for the metabolic rate calculation, and 2) applying a robust …

Implementing Parallel Spreadsheet Models For Health Policy Decisions: The Impact Of Unintentional Errors On Model Projections, Stephanie L. Bailey, Rose S. Bono, Denis Nash, April D. Kimmel

Health Policy Publications

Background

Spreadsheet software is increasingly used to implement systems science models informing health policy decisions, both in academia and in practice where technical capacity may be limited. However, spreadsheet models are prone to unintentional errors that may not always be identified using standard error-checking techniques. Our objective was to illustrate, through a methodologic case study analysis, the impact of unintentional errors on model projections by implementing parallel model versions.

Methods

We leveraged a real-world need to revise an existing spreadsheet model designed to inform HIV policy. We developed three parallel versions of a previously validated spreadsheet-based model; versions differed by …

The Relationship Between Body Mass Index, Binge Eating Disorder And Suicidality, Kristal Lyn Brown, Jessica Gokee Larose, Briana Mezuk

Health Policy Publications

Background
While restrictive and compensatory eating disorders (e.g. anorexia and bulimia) are associated with elevated risk of suicide, less is known about binge eating disorder (BED). There is suggestive evidence of a U-shaped relationship between body mass index (BMI) and completed suicide, but fewer studies on suicidal ideation or attempts. This study examined the association between BED, BMI, and suicidality, and assessed whether these relationships varied by gender.

Methods
Data come from the Collaborative Psychiatric Epidemiologic Surveys (N = 14,497). Binge episodes and BED were assessed using the Composite International Diagnostic Inventory (CIDI). BMI was calculated from self-reported height …

Triangulating Abuse Liability Assessment For Flavoured Cigar Products Using Physiological, Behavioural Economic And Subjective Assessments: A Within-Subjects Clinical Laboratory Protocol, Catherine S. Wall, Rose S. Bono, Rebecca C. Lester, Cosima Hoetger, Thokozeni Lipato, Mignonne C. Guy, Thomas E. Eissenberg, Warren K. Bickel, Andrew J. Barnes, Caroline O. Cobb

Health Policy Publications

Introduction
In the USA, Food and Drug Administration regulations prohibit the sale of flavoured cigarettes, with menthol being the exception. However, the manufacture, advertisement and sale of flavoured cigar products are permitted. Such flavourings influence positive perceptions of tobacco products and are linked to increased use. Flavourings may mask the taste of tobacco and enhance smoke inhalation, influencing toxicant exposure and abuse liability among novice tobacco users. Using clinical laboratory methods, this study investigates how flavour availability affects measures of abuse liability in young adult cigarette smokers. The specific aims are to evaluate the effect of cigar flavours on nicotine …

Social Determinants Of Smoke Exposure During Pregnancy: Findings From Waves 1 & 2 Of The Population Assessment Of Tobacco And Health (Path) Study, Elizabeth K. Do, Tiffany L. Green, Elizabeth C. Prom-Wormley, Bernard F. Fuemmeler

Health Policy Publications

Maternal smoking during pregnancy (MSDP) and secondhand smoke (SHS) exposure are associated with a myriad of negative health effects for both mother and child. However, less is known regarding social determinants for SHS exposure, which may differ from those of maternal smoking during pregnancy (MSDP). To identify social determinants for SHS exposure only, MSDP only, and MSDP and SHS exposure, data were obtained from all pregnant women (18–54 years; N = 726) in waves 1 and 2 of the Population Assessment of Tobacco and Health Study (2014–2015). Multiple logistic regressions were conducted using SAS 9.4. Smoke exposure during pregnancy was …

Mandatory Minimum Sentencing Policies And Cocaine Use In The U.S., 1985–2013, Lauryn Saxe Walker, Briana Mezuk

Health Policy Publications

Background: As of May 2017, the United States federal government renewed its prioritization for the enforcement of mandatory minimum sentences for illicit drug offenses. While the effect of such policies on racial disparities in incarceration is well-documented, less is known about the extent to which these laws are associated with decreased drug use. This study aims to identify changes in cocaine use associated with mandatory minimum sentencing policies by examining differential sentences for powder and crack cocaine set by the Anti-Drug Abuse Act (ADAA) (100:1) and the Fair Sentencing Act (FSA), which reduced the disparate sentencing to 18:1.


Methods: Using …

Complementary Feeding Intervention On Stunted Guatemalan Children: A Randomised Controlled Trial, Boris Martinez, Meghan Farley Webb, Ana Gonzalez, Kate Douglas, Maria Del Pilar Grazioso, Peter Rohloff

2010-2019 OA Pubs

OBJECTIVE/BACKGROUND: Guatemala's indigenous Maya population has one of the highest rates of childhood stunting in the world. The goal of this study was to examine the impact of an intensive, individualised approach to complementary feeding education for caregivers on feeding practices and growth over usual care.

DESIGN: An individually randomised (1:1 allocation ratio), parallel-group superiority trial, with blinding of study staff collecting outcome data.

SETTING: Rural Maya communities in Guatemala.

PARTICIPANTS: 324 children aged 6-24 months with a height-for-age Z score of less than or equal to -2.5 SD were randomised, 161 to the intervention and 163 to usual care. …

Factors That Reduce The Accuracy Of Seizure Identification Using Quantitative Eeg Displays, Saptharishi Lalgudi Ganesan, Craig Stewart, Eshetu Atenafu, Ayako Ochi, Hiroshi Otsubo, Cristina Go, Cecil Hahn

Data and Test Instruments

No abstract provided.

Lessons Learned In The Implementation Of Healthesteps: An Evidence-Based Healthy Lifestyle Program, P. Karen Simmavong, Loretta M. Hillier, Robert Petrella

Lifestyle Research Team

HealtheSteps is a pragmatic, evidence-based lifestyle prescription program aimed at reducing the rates of chronic disease, in particular, type 2 diabetes. A pro- cess evaluation was completed to assess the feasibility of the implementation of HealtheSteps in primary care and community-based settings across Canada. Key informant interviews (program providers and participants) were conducted to identify facilitators and barriers to implementation and opportunities for future program adaptation and improvement. Forty-three interviews were conducted across five regions in Canada (15 sites ranging from remote, rural, suburban, and urban). Transcripts were analyzed using a qualitative naturalistic inquiry approach with several facilitating factors identified: …

Interrelationships Of Functional Status And Health Conditions In Children With Cerebral Palsy: A Descriptive Study., Doreen Bartlett, Emily Dyszuk, Barbara Galuppi, Jan Willem Gorter

Physical Therapy Publications

PURPOSE: To examine the relationship among the Gross Motor Function Classification System (GMFCS), the Manual Ability Classification System (MACS), and the Communication Function Classification System (CFCS) in children with cerebral palsy (CP) and to determine the average number and effect of health conditions.

METHODS: Participants were 671 children with CP aged 2 to 12 years from Canada and the United States. Cross-tabulation of functional classifications and averages were computed for the number and impact of health conditions and comparisons among groups.

RESULTS: A total of 78 of the 125 possible classification combinations were recorded. Most frequent were GMFCS I, MACS …

Physical Rehabilitation Interventions In The Intensive Care Unit: A Scoping Review Of 117 Studies., Julie C Reid, Janelle Unger, Devin Mccaskell, Laura Childerhose, David J Zorko, Michelle E Kho

Physical Therapy Publications

BACKGROUND: Physical rehabilitation (PR) interventions in the intensive care unit (ICU) can improve patients' functional outcomes, yet systematic reviews identified discordant effects and poor reporting. We conducted a scoping review to determine the extent of ICU PR interventions and how they were reported and measured.

METHODS: We searched five databases from inception to December 2016 for prospective studies evaluating adult ICU PR interventions. Two independent reviewers screened titles, abstracts, and full texts for inclusion. We assessed completeness of reporting using the Consolidated Standards of Reporting Trials, Strengthening the Reporting of Observational Studies in Epidemiology, or Standards for Quality Improvement Reporting …

School Hours Lost Due To Acute/Unplanned Dental Care, Shillpa Naavaal, Uma Kelekar

Dental Public Health and Policy Publications

Objective: We estimated the school-hours lost for acute/unplanned dental care and examined the associated factors among children aged 5-17 years using 2008 National Health Interview Survey data.

Methods: We used bivariate and multivariate regression models to investigate the associations between school hours lost and socioeconomic and oral health factors (p < .05).

Results: Acute/unplanned dental care accounted for a loss of 34 million school-hours annually. Compared to children with very good oral health, children with fair/poor oral health were 2.8 times more likely to lose ≥1 hours. Children in high-income families had 31% less likelihood of losing any school …

All Ttg Positive Patient Do Not Have Celiac Disease, Pankaj Vohra, Kalyan Ray Parashette, Rajmohan Dharmaraj, Angela Deubel, Richardo Castillo, Jacqueline Fridge

Pediatrics Research and Scholarship

Tissue transglutaminase antibody IgA level (tTG) is an excellent screening test for celiac disease in the presence of adequate IgA levels. Most labs while screening for Celiac disease (CD) will do the IgA levels automatically. However the serological test is not a diagnostic test.

An Investigation Into The Relationship Between Fundamental Movement Skill Proficiency And Markers Of Health Among A Cohort Of Irish Primary School Children, Linda Bolger

PhDs

Background: Fundamental movement skills (FMS) are basic observable patterns of movement. Although FMS are positively associated with health, FMS levels among children worldwide are low. Interventions to improve FMS and markers of health among children are warranted. Thus, the purpose of this research was to firstly evaluate the FMS proficiency and markers of health of Irish primary school children, and to design and implement a programme of interventions to improve both.

Methods: Two interventions (1 Physical Activity [PA] and 1 FMS) were implemented and evaluated using children from 3 primary schools in Cork. Children (N=217, mean age: 7.98±2.00 years) …

The Effectiveness Of School-Based Interventions On The Fundamental Movement Skill Proficiency Among A Cohort Of Irish Primary School Children, Lisa Bolger

PhDs

Background: Fundamental movement skills (FMS) are basic observable patterns of movement such as running and jumping. FMS facilitate participation in physical activity and sport. The ability to perform FMS correctly (i.e. FMS proficiency) is associated with numerous health benefits and is important for the holistic development of children. FMS proficiency among primary school children worldwide is low. Thus, interventions aimed at improving FMS levels among children are warranted. Therefore, this thesis aimed to assess the FMS proficiency among a cohort of Irish primary school children and examine the effectiveness of a physical activity (PA) (Year 1) and a multicomponent FMS …

Project Spraoi: The Effectiveness Of A Nutrition And Physical Activity Intervention On The Dietry Intake, Dietary Patterns, Nutritional Knowledge And Markers Of Health Of Irish Primary School Children, Alison Merrotsy

PhDs

Aim: To implement and evaluate the effectiveness of a nutrition and physical activity (PA) intervention (Project Spraoi) on dietary intake (DI), dietary patterns (DP), nutritional knowledge (NK), cardiorespiratory fitness (CRF), blood pressure (BP) and markers of health of Irish children in one primary school in Cork. The relationship between DP and NK, CRF, BP and anthropometric data will also be examined.

Design: Cross-sectional and longitudinal study. Food diary, NK questionnaire and 550m walk/run test were used to assess DI, DP, NK and CRF, respectively. BP, body mass index (BMI) and waist to height ratio (WHtR) were also calculated.

Setting: Two …

Socio-Economic Determinants Of Physical Activity Across The Life Course: A "Determinants Of Diet And Physical Activity" (Dedipac) Umbrella Literature Review, Grainne O’Donoghue, Aileen Kennedy, Anna Puggina, Katina Aleksovska, Christoph Buck, Con Burns, Greet Cardon, Angela Carlin, Donatella Ciarapica, Marco Colotto, Giancarlo Condello, Tara Coppinger, Cristina Cortis, Sara D’Haese, Marieke De Craemer, Andrea Di Blasio, Sylvia Hansen, Licia Iacoviello, Johann Issartel, Pascal Izzicupo, Lina Jaeschke, Martina Kanning, Fiona Ling, Agnes Luzak, Giorgio Napolitano, Julie Anne Nazare, Camille Perchoux, Caterina Pesce, Tobias Pischon, Angela Polito, Alessandra Sannella, Holger Schulz

Publications

Background To date, the scientific literature on socioeconomic correlates and determinants of physical activity behaviours has been dispersed throughout a number of systematic reviews, often focusing on one factor (e.g. education or parental income) in one specific age group (e.g. pre-school children or adults). The aim of this umbrella review is to provide a comprehensive and systematic overview of the scientific literature from previously conducted research by summarising and synthesising the importance and strength of the evidence related to socioeconomic correlates and determinants of PA behaviours across the life course. Methods Medline, Embase, ISI Web of Science, Scopus and SPORTDiscus …