Social and Behavioral Sciences Commons^™

Probiotic Yoghourt For Health, Nutrition And Women's Empowerment In Kenya: A Community-Based Approach, Ellena Andoniou

Electronic Thesis and Dissertation Repository

The dissertation aims to examine the impacts of probiotic yoghourt on health, nutrition and women’s empowerment within the context of HIV/AIDS in Kenya. Mixed methods that combine quantiative and qualitative approaches are used to understand the effects of probiotic yoghourt on the health, nutrition and quality of life for men and women. Results of the quantiative analysis (n=227) demonstrated that the probiotic yoghourt confers a variety of health benefits – physiological (fewer urogenital conditions and digestive problems; reduced dependence on medical treatment), and psychological (perceived improvements with bodily appearance, felt an increased meaningfulness with life). Results of the qualitative analysis …

Staying Current In Your Field Of Interest: Tips For Aspiring Students As Researchers, Dor D. Abelman

Health Studies Publications

Undergraduate students are becoming increasingly involved in research. They already posses the skills required to make meaningful contributions to their field of interest. Some important components of their success relates to a student's ability to stay up to date in the research of their field, and to learn practical skills pertaining to the publishing process. This article hopes to help with this through presenting easy-to-follow summary tables and short paragraphs on tips for success. Topics include staying up to date in a practical way, getting involved, reaching out for help, and publication. For students, by students, this report is relatable …

Mindfulness And Mothering: Reclaiming Feminine Voice, Lisa L. Mccorquodale

Electronic Thesis and Dissertation Repository

Little is known about working mothers who practice mindfulness. This dissertation is a phenomenological investigation using body mapping as a way to understand how mindfulness works in the lives of six women who work in health and social care while parenting young children.

This dissertation is comprised of five integrated articles. Chapter 1 and 7 are included as an Introduction and Discussion/Conclusion to the five separate though related manuscript chapters. The main research questions that framed this research include, ‘What is the work of mindfulness in the lives of working professional mothers?’ and ‘In what ways might a mindfulness practice …

The Serotonin Transporter Promoter Polymorphism Moderates The Continuity Of Behavioral Inhibition In Early Childhood., Victoria C Johnson, Katie R Kryski, Haroon I Sheikh, Heather J Smith, Shiva M Singh, Elizabeth P Hayden

Brain and Mind Institute Researchers' Publications

Persistently elevated behavioral inhibition (BI) in children is a marker of vulnerability to psychopathology. However, little research has considered the joint influences of caregiver and child factors that may moderate the continuity of BI in early childhood, particularly genetic variants that may serve as markers of biological plasticity, such as the serotonin transporter linked polymorphic region (5-HTTLPR). We explored this issue in 371 preschoolers and their caregivers, examining whether parent characteristics (i.e., overinvolvement or anxiety disorder) and child 5-HTTLPR influenced the continuity of BI between ages 3 and 5. Measures were observational ratings of child BI, observational and questionnaire measures …

Resting-State Network-Specific Breakdown Of Functional Connectivity During Ketamine Alteration Of Consciousness In Volunteers., Vincent Bonhomme, Audrey Vanhaudenhuyse, Athena Demertzi, Marie-Aurélie Bruno, Oceane Jaquet, Mohamed Ali Bahri, Alain Plenevaux, Melanie Boly, Pierre Boveroux, Andrea Soddu, Jean François Brichant, Pierre Maquet, Steven Laureys

Brain and Mind Institute Researchers' Publications

BACKGROUND: Consciousness-altering anesthetic agents disturb connectivity between brain regions composing the resting-state consciousness networks (RSNs). The default mode network (DMn), executive control network, salience network (SALn), auditory network, sensorimotor network (SMn), and visual network sustain mentation. Ketamine modifies consciousness differently from other agents, producing psychedelic dreaming and no apparent interaction with the environment. The authors used functional magnetic resonance imaging to explore ketamine-induced changes in RSNs connectivity.

METHODS: Fourteen healthy volunteers received stepwise intravenous infusions of ketamine up to loss of responsiveness. Because of agitation, data from six subjects were excluded from analysis. RSNs connectivity was compared between absence of …

Usage Of Swi (Susceptibility Weighted Imaging) Acquired At 7t For Qualitative Evaluation Of Temporal Lobe Epilepsy Patients With Histopathological And Clinical Correlation: An Initial Pilot Study., Benjamin Y M Kwan, Fateme Salehi, Pavlo Ohorodnyk, Donald H Lee, Jorge G Burneo, Seyed M Mirsattari, David Steven, Robert Hammond, Terry M Peters, Ali R Khan

Brain and Mind Institute Researchers' Publications

OBJECTIVES: Ultra high field MRI at 7T is able to provide much improved spatial and contrast resolution which may aid in the diagnosis of hippocampal abnormalities. This paper presents a preliminary experience on qualitative evaluation of 7T MRI in temporal lobe epilepsy patients with a focus on comparison to histopathology.

METHODS: 7T ultra high field MRI data, using T1-weighted, T2*-weighted and susceptibility-weighted images (SWI), were acquired for 13 patients with drug resistant temporal lobe epilepsy (TLE) during evaluation for potential epilepsy surgery. Qualitative evaluation of the imaging data for scan quality and presence of hippocampal and temporal lobe abnormalities were …

Quantifying And Comparing The Pattern Of Thalamic And Cortical Projections To The Posterior Auditory Field In Hearing And Deaf Cats., Blake E Butler, Nicole Chabot, Stephen G Lomber

Brain and Mind Institute Researchers' Publications

Following sensory loss, compensatory crossmodal reorganization occurs such that the remaining modalities are functionally enhanced. For example, behavioral evidence suggests that peripheral visual localization is better in deaf than in normal hearing animals, and that this enhancement is mediated by recruitment of the posterior auditory field (PAF), an area that is typically involved in localization of sounds in normal hearing animals. To characterize the anatomical changes that underlie this phenomenon, we identified the thalamic and cortical projections to the PAF in hearing cats and those with early- and late-onset deafness. The retrograde tracer biotinylated dextran amine was deposited in the …

Neural Measures Reveal Implicit Learning During Language Processing., Laura J Batterink, Larry Y Cheng, Ken A Paller

Brain and Mind Institute Researchers' Publications

Language input is highly variable; phonological, lexical, and syntactic features vary systematically across different speakers, geographic regions, and social contexts. Previous evidence shows that language users are sensitive to these contextual changes and that they can rapidly adapt to local regularities. For example, listeners quickly adjust to accented speech, facilitating comprehension. It has been proposed that this type of adaptation is a form of implicit learning. This study examined a similar type of adaptation, syntactic adaptation, to address two issues: (1) whether language comprehenders are sensitive to a subtle probabilistic contingency between an extraneous feature (font color) and syntactic structure …

Probing The Nature Of Deficits In The ‘Approximate Number System’ In Children With Persistent Developmental Dyscalculia, S Bugden, Daniel Ansari

Brain and Mind Institute Researchers' Publications

In the present study we examined whether children with Developmental Dyscalculia (DD) exhibit a deficit in the so-called 'Approximate Number System' (ANS). To do so, we examined a group of elementary school children who demonstrated persistent low math achievement over 4 years and compared them to typically developing (TD), aged-matched controls. The integrity of the ANS was measured using the Panamath (www.panamath.org) non-symbolic numerical discrimination test. Children with DD demonstrated imprecise ANS acuity indexed by larger Weber fraction (w) compared to TD controls. Given recent findings showing that non-symbolic numerical discrimination is affected by visual parameters, we went further and …

A Quantitative Comparison Of The Hemispheric, Areal, And Laminar Origins Of Sensory And Motor Cortical Projections To The Superior Colliculus Of The Cat., Blake E Butler, Nicole Chabot, Stephen G Lomber

Brain and Mind Institute Researchers' Publications

The superior colliculus (SC) is a midbrain structure central to orienting behaviors. The organization of descending projections from sensory cortices to the SC has garnered much attention; however, rarely have projections from multiple modalities been quantified and contrasted, allowing for meaningful conclusions within a single species. Here, we examine corticotectal projections from visual, auditory, somatosensory, motor, and limbic cortices via retrograde pathway tracers injected throughout the superficial and deep layers of the cat SC. As anticipated, the majority of cortical inputs to the SC originate in the visual cortex. In fact, each field implicated in visual orienting behavior makes a …

Linking Insight To Behaviour Change In A Life Coaching Intervention For Women, Tracy A. Robinson

Electronic Thesis and Dissertation Repository

Solving a problem with insight provokes a change of mind and concomitantly, behaviour. This mixed method study examined moments of insight during life coaching to determine whether having moments of insight led to more meaningful and sustained behavior change. Moments of insight and non-insight were tracked over nine life-coaching sessions with a population of women (N=6) and their coaches (N=6). Validated measures of problem-solving ability, psychological well-being, and mindfulness were collected before and after the intervention, along with behaviour change goals, Wheel of Life® satisfaction, and a personal strength profile. At eight weeks post intervention, sustainability was assessed via an …

Social Connectedness, Social Support And The Health Of Older Adults: A Comparison Of Immigrant And Native-Born Canadians, Natalie Iciaszczyk

Electronic Thesis and Dissertation Repository

Considerable research exists on the influence of social relationships for health in old age. However, few studies have compared the associations of social connectedness and social support with the health of older adults. Using data from the CCHS-Healthy Aging, this study examines how these constructs are related to the self-reported health status of immigrant and native-born adults aged 65+. Results show that social connectedness and social support are differently associated with health in later life; whereas connectedness is linked to better health, social support is negatively related with health once levels of social connectedness are considered. Furthermore, these associations hold …

A Trial-By-Trial Window Into Sensorimotor Transformations In The Human Motor Periphery., Chao Gu, Daniel K Wood, Paul L Gribble, Brian D Corneil

Brain and Mind Institute Researchers' Publications

UNLABELLED: The appearance of a novel visual stimulus generates a rapid stimulus-locked response (SLR) in the motor periphery within 100 ms of stimulus onset. Here, we recorded SLRs from an upper limb muscle while humans reached toward (pro-reach) or away (anti-reach) from a visual stimulus. The SLR on anti-reaches encoded the location of the visual stimulus rather than the movement goal. Further, SLR magnitude was attenuated when subjects reached away from rather than toward the visual stimulus. Remarkably, SLR magnitudes also correlated with reaction times on both pro-reaches and anti-reaches, but did so in opposite ways: larger SLRs preceded shorter …

Effects Of Material Properties And Object Orientation On Precision Grip Kinematics., Vivian C Paulun, Karl R Gegenfurtner, Melvyn A Goodale, Roland W Fleming

Brain and Mind Institute Researchers' Publications

Successfully picking up and handling objects requires taking into account their physical properties (e.g., material) and position relative to the body. Such features are often inferred by sight, but it remains unclear to what extent observers vary their actions depending on the perceived properties. To investigate this, we asked participants to grasp, lift and carry cylinders to a goal location with a precision grip. The cylinders were made of four different materials (Styrofoam, wood, brass and an additional brass cylinder covered with Vaseline) and were presented at six different orientations with respect to the participant (0°, 30°, 60°, 90°, 120°, …

Rapid Decrement In The Effects Of The Ponzo Display Dissociates Action And Perception., Robert L Whitwell, Gavin Buckingham, James T Enns, Philippe A Chouinard, Melvyn A Goodale

Brain and Mind Institute Researchers' Publications

It has been demonstrated that pictorial illusions have a smaller influence on grasping than they do on perceptual judgments. Yet to date this work has not considered the reduced influence of an illusion as it is measured repeatedly. Here we studied this decrement in the context of a Ponzo illusion to further characterize the dissociation between vision for perception and for action. Participants first manually estimated the lengths of single targets in a Ponzo display with their thumb and index finger, then actually grasped these targets in another series of trials, and then manually estimated the target lengths again in …

A Longitudinal Investigation Of Predictors Of The Association Between Age 3 And Age 6 Behavioural Inhibition., Victoria C Johnson, Thomas M Olino, Daniel N Klein, Margaret W Dyson, Sara J Bufferd, C Emily Durbin, Lea R Dougherty, Elizabeth P Hayden

Brain and Mind Institute Researchers' Publications

Children who exhibit elevated levels of the temperament trait behavioural inhibition (BI) across time may be at greatest risk for anxiety. However, little research has investigated the influence of other temperamental traits, particularly positive emotionality (PE), on the continuity of BI in childhood, nor whether parental overprotection influences associations between early and later child BI. To explore whether PE and overprotection shape associations between early and later BI, this longitudinal study of three-year-olds (

Why Numerical Symbols Count In The Development Of Mathematical Skills: Evidence From Brain And Behaviour, Rebecca Merkley, Daniel Ansari

Brain and Mind Institute Researchers' Publications

Numerical skills measured prior to school entry are predictive of mathematics achievement longitudinally. It is therefore important that young children start school with strong mathematical foundations. Here we review evidence from behavior and neuroimaging that highlights numerical symbol knowledge as a key mediator between informal and formal mathematical competencies. We argue that future research should aim to elucidate cognitive and neuronal mechanisms underpinning the acquisition of symbolic knowledge. Furthermore, multiple aspects of numerical symbol knowledge, such as identification, cardinality, and ordinality, should be emphasized in preschool childcare environments

Measuring Engagement Of The Executive Control Network From 3 Months Of Age, Michelle Tran

Electronic Thesis and Dissertation Repository

The executive control network (ECN) is critical for higher cognition and executive function (EF). Despite its importance, no scientific consensus has been reached on how and when it begins to function. In the present study, we assessed the development of the ECN in awake infants less than a year old by employing functional magnetic resonance imaging (fMRI) and naturalistic stimuli. First, we identified evocative movies that engaged infant attention. We then transferred them into adult imaging to test for which movie evoked the highest ECN response. Strong ECN responses were evoked while viewing Despicable Me, therefore we implemented this …

Disentangling Representations Of Object And Grasp Properties In The Human Brain, Sara Fabbri, Kevin M. Stubbs, Rhodri Cusack, Jody C. Culham

Brain and Mind Institute Researchers' Publications

No abstract provided.

Assessing Decision-Making Capacity After Severe Brain Injury, Andrew Peterson

Electronic Thesis and Dissertation Repository

Severe brain injury is a leading cause of death and disability. Following severe brain injury diagnosis is difficult and errors frequently occur. Recent findings in clinical neuroscience may offer a solution. Neuroimaging has been used to detect preserved cognitive function and awareness in some patients clinically diagnosed as being in a vegetative state. Remarkably, neuroimaging has also been used to communicate with some vegetative patients through a series of yes/no questions. Some have speculated that, one day, this method may allow severely brain-injured patients to make medical decisions. Yet, skepticism is rife, due in part to the inherent difficulty of …

A Review Of The Relation Between Dissociation, Memory, Executive Functioning And Social Cognition In Military Members And Civilians With Neuropsychiatric Conditions, Margaret C. Mckinnon, Jenna E. Boyd, Paul A. Frewen, Ulrich F. Lanius, Rakesh Jetly, Don Richardson, Ruth A. Lanius

MacDonald Franklin OSI Research Centre

Dissociative experiences, involving altered states of consciousness, have long been understood as a consequence or response to traumatic experiences, where a reduced level of consciousness may aid in survival during and after a traumatic event. Indeed, the dissociative subtype of post-traumatic stress disorder (PTSD-DS) was added recently to the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5). Dissociative symptoms are present across a host of neuropsychiatric conditions, including PTSD, psychotic spectrum illnesses, anxiety and mood disorders. Transdiagnostically, the presence of dissociative symptoms is associated with a greater illness burden and reduced treatment outcomes. Critically, dissociative symptoms are related …

Cerebral Functional Connectivity Periodically (De)Synchronizes With Anatomical Constraints., Raphaël Liégeois, Erik Ziegler, Christophe Phillips, Pierre Geurts, Francisco Gómez, Mohamed Ali Bahri, B T Thomas Yeo, Andrea Soddu, Audrey Vanhaudenhuyse, Steven Laureys, Rodolphe Sepulchre

Brain and Mind Institute Researchers' Publications

This paper studies the link between resting-state functional connectivity (FC), measured by the correlations of fMRI BOLD time courses, and structural connectivity (SC), estimated through fiber tractography. Instead of a static analysis based on the correlation between SC and FC averaged over the entire fMRI time series, we propose a dynamic analysis, based on the time evolution of the correlation between SC and a suitably windowed FC. Assessing the statistical significance of the time series against random phase permutations, our data show a pronounced peak of significance for time window widths around 20-30 TR (40-60 s). Using the appropriate window …

Visualizing And Interacting With Social Determinants Of Health, Moutasem Zakkar

Electronic Thesis and Dissertation Repository

Purpose: The purpose of this study is to examine the use of information visualization to represent specific social determinants of health, and to examine the benefits of such representation for health policymaking. Methods: The study developed a prototype for a visualization tool (www.healthvisualization.ca), which represents the conceptual framework for the social determinants of health (CSDH) and new ways to represent related health equity indicators. This tool was used by study participants. The experience of these participants and the usability of the tool were evaluated using qualitative semi-structured interviews. Results: Visualizing the CSDH framework helps to present the social …

Insights Into Quasar Uv Spectra Using Unsupervised Clustering Analysis, A Tammour, S.C. Gallagher, M Daley, G.T. Richards

Brain and Mind Institute Researchers' Publications

Machine learning techniques can provide powerful tools to detect patterns in multidimensional parameter space. We use K-means - a simple yet powerful unsupervised clustering algorithm which picks out structure in unlabelled data - to study a sample of quasar UV spectra from the Quasar Catalog of the 10th Data Release of the Sloan Digital Sky Survey (SDSS-DR10) of Paris et al. Detecting patterns in large data sets helps us gain insights into the physical conditions and processes giving rise to the observed properties of quasars. We use K-means to find clusters in the parameter space of the equivalent width (EW), …

Nurses' Workplace Social Capital: Development And Validation Of A Self-Report Questionnaire, Emily A. Read

Electronic Thesis and Dissertation Repository

Background: Social capital refers to resources created by and embedded in social relationships and has been identified as an important aspect of nurses’ work life. There is limited empirical evidence regarding its role and currently no valid and reliable self-report instruments to measure workplace social capital comprehensively.

Purpose: This study aimed to develop and test a self-report questionnaire to measure nurses’ workplace social capital and examine the nomologicial network of the concept including authentic leadership and structural empowerment as precursors of social capital and team effectiveness and patient care quality as outcomes.

Methods: A cross-sectional survey of 1,000 Registered Nurses …

Rural Men’S Health, Health Information Seeking, And Gender Identities: A Conceptual Theoretical Review Of The Literature, Bradley C. Hiebert, Beverly Leipert, Sandra Regan, Jacquelyn A. Burkell

FIMS Publications

Beginning as early as 2009, recent shifts in Canadian health care delivery indicate that access to health information is essential to promote and maintain a healthy population. It is important to understand how and where various populations, such as underresourced rural populations, access health information so that public health agencies can develop and deliver appropriate information with, for, and in these contexts. There is a paucity of research that specifically examines how rural Canadian men seek health information; therefore, this review aimed to conceptualize this process based on three dynamic key constructs: health patterns of rural Canadians, health information–seeking behaviors, …

The Neural Roots Of Mathematical Expertise, Daniel Ansari

Brain and Mind Institute Researchers' Publications

No abstract provided.

Challenges In Mathematical Cognition: A Collaboratively-Derived Research Agenda, Lara Alcock, Daniel Ansari, Sophie Batchelor, Marie-Josee Bisson, Bert De Smedt, Camilla Gilmore, Silke M. Gobel, Minna Hannula-Sormunen, Jeremy Hodgen, Matthew Inglis, Ian Jones, Michele Mazzocco, Nicole Mcneil, Michael Schneider, Victoria Simms, Keith Weber

Brain and Mind Institute Researchers' Publications

This paper reports on a collaborative exercise designed to generate a coherent agenda for research on mathematical cognition. Following an established method, the exercise brought together 16 mathematical cognition researchers from across the fields of mathematics education, psychology and neuroscience. These participants engaged in a process in which they generated an initial list of research questions with the potential to significantly advance understanding of mathematical cognition, winnowed this list to a smaller set of priority questions, and refined the eventual questions to meet criteria related to clarity, specificity and practicability. The resulting list comprises 26 questions divided into six broad …

First-Responders And Emergency Department Healthcare Provider Interactions During Emergency Situations: A Grounded Theory Study, Jennifer A. Mohaupt

Electronic Thesis and Dissertation Repository

Interactions between and among first-responders and emergency department (ED) healthcare providers impact the way in which patients are managed during emergency situations. The purpose of this study was to develop a grounded theory to explain the interactions between and among first-responders and ED healthcare providers during emergency situations. Interprofessional collaboration and teamwork has been extensively studied, however little is known about interactions that include first-responders. This study was guided by Strauss and Corbin’s (1990) approach to grounded theory. Data were collected through 256 hours of first-responder and ED observational opportunities and informal interviews with accompanying detailed field notes. As well, …

The Euthanasia Debate: International Experience And Canadian Policy Proposals, Lorna M. Fratschko

Electronic Thesis and Dissertation Repository

This thesis examines the problematic prospect of the introduction of euthanasia and physician-assisted suicide into Canadian society. The thesis argues that euthanasia is too simplistic an approach to address the complexities of end of life issues. The policy proposal under active discussion is profoundly mistaken. The language of euthanasia is examined in relation to the choice of words used, drawing attention to how words, when used loosely, can distort reality in this matter. Historical experience from other jurisdictions is presented to provide a context for this discussion. A "slippery slope" argument emerges via the claim that, in practice and in …