Social and Behavioral Sciences Commons^™

Perspectives Of Canadian University Coaches On Integrating Sport Psychology And Mental Performance Consultants In Varsity Programs, Federico Cisneros Sánchez

Electronic Thesis and Dissertation Repository

Recently, sport psychology has become a more popular resource for athletes and coaches when looking to increase performance. It is unknown how many Canadian universities utilize sport psychology services in their athletic programs. Semi-structured interviews were conducted with coaches of Canadian university varsity teams to learn about their opinions on sport psychology and mental performance consultants (MPCs). The research was approached from a pragmatic perspective. Results showed that MPCs are important to enhance performance and provide mental health resources. MPCs provide athletes with personal and leadership development, mental skills training, and mental health support. MPCs can also be a resource …

The Role Of Haptic Expectations In Reaching To Grasp: From Pantomime To Natural Grasps And Back Again, Robert L. Whitwell, Nathan J. Katz, Melvyn A. Goodale, James T. Enns

Brain and Mind Institute Researchers' Publications

© Copyright © 2020 Whitwell, Katz, Goodale and Enns. When we reach to pick up an object, our actions are effortlessly informed by the object’s spatial information, the position of our limbs, stored knowledge of the object’s material properties, and what we want to do with the object. A substantial body of evidence suggests that grasps are under the control of “automatic, unconscious” sensorimotor modules housed in the “dorsal stream” of the posterior parietal cortex. Visual online feedback has a strong effect on the hand’s in-flight grasp aperture. Previous work of ours exploited this effect to show that grasps are …

Regional Integration: Physician Perceptions On Electronic Medical Record Use And Impact In South West Ontario, Sadiq Raji

Electronic Thesis and Dissertation Repository

Regional initiatives in the health care context in Canada are typically organized and administered along geographic boundaries or operational units. Regional integration of Electronic Medical Records (EMR) has been continuing across Canadian provinces in recent years, yet the use and impact of regionally integrated EMRs are not routinely assessed and questions remain about their impact on and use in physicians’ practices. Are stated goals of simplifying connections and sharing of electronic health information collected and managed by many health services providers being met? What are physicians’ perspectives on the use and impact of regionally integrated EMR? In this thesis, I …

A Novel Spatio-Temporal Examination Of Children's Accessibility, Exposure, And Engagement To Parks And Recreation Spaces In Middlesex-London, Ontario, Malcolm K. Little

Electronic Thesis and Dissertation Repository

Children are spending more free time engaged in activities indoors, rather than in outdoor environments such as parks and recreation spaces. Parks and recreation spaces provide amenities that promote physical, cognitive, and social health among children. As it relates to the complexities of children’s living situations, properly measuring children’s levels of interactions with these spaces is poorly understood in geography research.

By examining various attributes of children, this thesis improves on the measurement of children’s levels of interactions with parks and recreation spaces. Research herein utilized household survey data, a high-resolution GIS dataset of environmental factors, and GPS logs from …

Coexistence Of Perseveration And Apathy In The Tdp-43Q331k Knock-In Mouse Model Of Als–Ftd, Eosu Kim, Matthew A. White, Benjamin U. Phillips, Laura Lopez-Cruz, Hyunjeong Kim, Christopher J. Heath, Jong Eun Lee, Lisa M. Saksida, Jemeen Sreedharan, Timothy J. Bussey

Brain and Mind Institute Researchers' Publications

© 2020, The Author(s). Perseveration and apathy are two of the most common behavioural and psychological symptoms of dementia (BPSDs) in amyotrophic lateral sclerosis–frontotemporal dementia (ALS–FTD). Availability of a validated and behaviourally characterised animal model is crucial for translational research into BPSD in the FTD context. We behaviourally evaluated the male TDP-43Q331K mouse, an ALS–FTD model with a human-equivalent mutation (TDP-43Q331K) knocked into the endogenous Tardbp gene. We utilised a panel of behavioural tasks delivered using the rodent touchscreen apparatus, including progressive ratio (PR), extinction and visual discrimination/reversal learning (VDR) assays to examine motivation, response inhibition and cognitive flexibility, respectively. …

Shared Functional Connectivity Between The Dorso-Medial And Dorso-Ventral Streams In Macaques, R. Stefan Greulich, Ramina Adam, Stefan Everling, Hansjörg Scherberger

Brain and Mind Institute Researchers' Publications

© 2020, The Author(s). Manipulation of an object requires us to transport our hand towards the object (reach) and close our digits around that object (grasp). In current models, reach-related information is propagated in the dorso-medial stream from posterior parietal area V6A to medial intraparietal area, dorsal premotor cortex, and primary motor cortex. Grasp-related information is processed in the dorso-ventral stream from the anterior intraparietal area to ventral premotor cortex and the hand area of primary motor cortex. However, recent studies have cast doubt on the validity of this separation in separate processing streams. We investigated in 10 male rhesus …

Neural Responses And Perceptual Sensitivity To Sound Depend On Sound-Level Statistics, Björn Herrmann, Thomas Augereau, Ingrid S. Johnsrude

Brain and Mind Institute Researchers' Publications

© 2020, The Author(s). Sensitivity to sound-level statistics is crucial for optimal perception, but research has focused mostly on neurophysiological recordings, whereas behavioral evidence is sparse. We use electroencephalography (EEG) and behavioral methods to investigate how sound-level statistics affect neural activity and the detection of near-threshold changes in sound amplitude. We presented noise bursts with sound levels drawn from distributions with either a low or a high modal sound level. One participant group listened to the stimulation while EEG was recorded (Experiment I). A second group performed a behavioral amplitude-modulation detection task (Experiment II). Neural activity depended on sound-level statistical …

Modeling An Auditory Stimulated Brain Under Altered States Of Consciousness Using The Generalized Ising Model, Sivayini Kandeepan, Jorge Rudas, Francisco Gomez, Bobby Stojanoski, Sree Ram Valluri, Adrian Mark Owen, Lorina Naci, Emily Sophia Nichols, Andrea Soddu

Brain and Mind Institute Researchers' Publications

Propofol is a short-acting medication that results in decreased levels of consciousness and is used for general anesthesia. Although it is the most commonly used anesthetic in the world, much remains unknown about the mechanisms by which it induces a loss of consciousness. Characterizing anesthesia-induced alterations to brain network activity might provide a powerful framework for understanding the neural mechanisms of unconsciousness. The aim of this work was to model brain activity in healthy brains during various stages of consciousness, as induced by propofol, in the auditory paradigm. We used the generalized Ising model (GIM) to fit the empirical fMRI …

Face Selective Patches In Marmoset Frontal Cortex, David J. Schaeffer, Janahan Selvanayagam, Kevin D. Johnston, Ravi S. Menon, Winrich A. Freiwald, Stefan Everling

Brain and Mind Institute Researchers' Publications

© 2020, The Author(s). In humans and macaque monkeys, socially relevant face processing is accomplished via a distributed functional network that includes specialized patches in frontal cortex. It is unclear whether a similar network exists in New World primates, who diverged ~35 million years from Old World primates. The common marmoset is a New World primate species ideally placed to address this question given their complex social repertoire. Here, we demonstrate the existence of a putative high-level face processing network in marmosets. Like Old World primates, marmosets show differential activation in anterior cingulate and lateral prefrontal cortices while they view …

Brain Metabolite Levels In Sedentary Women And Non-Contact Athletes Differ From Contact Athletes, Amy L. Schranz, Gregory A. Dekaban, Lisa Fischer, Kevin Blackney, Christy Barreira, Timothy J. Doherty, Douglas D. Fraser, Arthur Brown, Jeff Holmes, Ravi S. Menon, Robert Bartha

Brain and Mind Institute Researchers' Publications

White matter tracts are known to be susceptible to injury following concussion. The objective of this study was to determine whether contact play in sport could alter white matter metabolite levels in female varsity athletes independent of changes induced by long-term exercise. Metabolite levels were measured by single voxel proton magnetic resonance spectroscopy (MRS) in the prefrontal white matter at the beginning (In-Season) and end (Off-Season) of season in contact (N = 54, rugby players) and non-contact (N = 23, swimmers and rowers) varsity athletes. Sedentary women (N = 23) were scanned once, at a time equivalent to the Off-Season …

Structure Of Population Activity In Primary Motor Cortex For Single Finger Flexion And Extension, Spencer A. Arbuckle, Jeff Weiler, Eric A. Kirk, Charles L. Rice, Marc Schieber, J. Andrew Pruszynski, Naveed Ejaz, Jörn Diedrichsen

Brain and Mind Institute Researchers' Publications

Copyright © 2020 the authors How is the primary motor cortex (M1) organized to control fine finger movements? We investigated the population activity in M1 for single finger flexion and extension, using 7T functional magnetic resonance imaging (fMRI) in female and male human participants and compared these results to the neural spiking patterns recorded in two male monkeys performing the identical task. fMRI activity patterns were distinct for movements of different fingers, but were quite similar for flexion and extension of the same finger. In contrast, spiking patterns in monkeys were quite distinct for both fingers and directions, which is …

Cortico-Subcortical Functional Connectivity Profiles Of Resting-State Networks In Marmosets And Humans, Yuki Hori, David J. Schaeffer, Atsushi Yoshida, Justine C. Cléry, Lauren K. Hayrynen, Joseph S. Gati, Ravi S. Menon, Stefan Everling

Brain and Mind Institute Researchers' Publications

Copyright © 2020 the authors Understanding the similarity of cortico-subcortical networks topologies between humans and nonhuman primate species is critical to study the origin of network alternations underlying human neurologic and neuropsychiatric diseases. The New World common marmoset (Callithrix jacchus) has become popular as a nonhuman primate model for human brain function. Most marmoset connectomic research, however, has exclusively focused on cortical areas, with connectivity to subcortical networks less extensively explored. Here, we aimed to first isolate patterns of subcortical connectivity with cortical resting-state networks in awake marmosets using resting-state fMRI, then to compare these networks with those in humans …

Gender, Technology And Innovation In Health Care Panel, Melanie Katsivo

Africa-Western Collaborations Day 2020

8 graduate student/recent graduate presentations on gender, technology, and innovation in health care. Moderated by Dr. Melanie Katsivo. Reporting of panel done by current GHS students of the 2021 class. Abstracts can be found under "Africa-Western Collaborations Day 2020 Abstracts". Presenters as follows:

Florence Wullo Anfaara, "To Include or Not to Include: Men and the Liberian Women's Peace Hut Initiatives Towards Transformational Justice"

Uche Ikenyei, "Diversification of Research Methodological Approach During Model Enhancements in Health Information System Research"

Denise Kamyuka, "Female Social Entrepreneurship in Sport, in the African Context: Systemic Review"

Ebenezer Martin-Yeboah, "Through the Lens of Egocentric Design: Do …

Direct Visualization And Characterization Of The Human Zona Incerta And Surrounding Structures, Jonathan C. Lau, Yiming Xiao, Roy A.M. Haast, Greydon Gilmore, Kâmil Uludağ, Keith W. Macdougall, Ravi S. Menon, Andrew G. Parrent, Terry M. Peters, Ali R. Khan

Brain and Mind Institute Researchers' Publications

The zona incerta (ZI) is a small gray matter region of the deep brain first identified in the 19th century, yet direct in vivo visualization and characterization has remained elusive. Noninvasive detection of the ZI and surrounding region could be critical to further our understanding of this widely connected but poorly understood deep brain region and could contribute to the development and optimization of neuromodulatory therapies. We demonstrate that high resolution (submillimetric) longitudinal (T1) relaxometry measurements at high magnetic field strength (7 T) can be used to delineate the ZI from surrounding white matter structures, specifically the fasciculus cerebellothalamicus, fields …

The Neural Basis Of Metacognitive Monitoring During Arithmetic In The Developing Brain, Elien Bellon, Wim Fias, Daniel Ansari, Bert De Smedt

Brain and Mind Institute Researchers' Publications

In contrast to a substantial body of research on the neural basis of cognitive performance in several academic domains, less is known about how the brain generates metacognitive (MC) awareness of such performance. The existing work on the neurobiological underpinnings of metacognition has almost exclusively been done in adults and has largely focused on lower level cognitive processing domains, such as perceptual decision-making. Extending this body of evidence, we investigated MC monitoring by asking children to solve arithmetic problems, an educationally relevant higher-order process, while providing concurrent MC reports during fMRI acquisition. Results are reported on 50 primary school children …

Understanding The Determinants Of The Cost Of Coronary Artery Bypass Graft Surgery, Hun Lee

Electronic Thesis and Dissertation Repository

Introduction: The relationship between patient demographics, clinical factors, and cost of coronary artery bypass graft (CABG) is complex. Investigation of these relationships is important to aid clinical practice and inform reimbursement models. This thesis analyzes multiple different domains in order to understand the significant factors that impact the cost of CABG at the London Health Sciences Centre (LHSC).

Methods: Model selection, construction of nested descriptive models, exploration of mediation analysis of the impact of peri-operative factors and cost through length of stay, and construction of estimative models were performed.

Results: Several baseline characteristics, socio-demographics, peri-operative variables, and post-operative variables were …

The Impact Of Levodopa Administration On Learning From Short-Term And Long-Term Action Consequences: A Paradigm Validation., Masood Rezaei

Electronic Thesis and Dissertation Repository

Behavioral and neuroimaging studies have identified two valuation systems in the human brain for controlling behavior known as model-free (MF) and model-based (MB). MF is based on immediate evaluation and MB is based on long-term evaluation of the outcome of our decisions. Previous studies suggest that dopamine baseline activity may play an important role in the balance between the two systems and determine how they compete or interact in controlling our actions. The overarching aims of this study is to investigate the impact of levodopa administration on learning from immediate and long-term action consequences, and to dissociate the role of …

Syllables In Sync Form A Link: Neural Phase-Locking Reflects Word Knowledge During Language Learning, Laura Batterink

Brain and Mind Institute Researchers' Publications

Language is composed of small building blocks, which combine to form larger meaningful structures. To understand language, we must process, track, and concatenate these building blocks into larger linguistic units as speech unfolds over time. An influential idea is that phase-locking of neural oscillations across different levels of linguistic structure provides a mechanism for this process. Building on this framework, the goal of the current study was to determine whether neural phase-locking occurs more robustly to novel linguistic items that are successfully learned and encoded into memory, compared to items that are not learned. Participants listened to a continuous speech …

Decoding Motor Imagery And Action Planning In The Early Visual Cortex: Overlapping But Distinct Neural Mechanisms, Simona Monaco, Giulia Malfatti, Jody C. Culham, Luigi Cattaneo, Luca Turella

Brain and Mind Institute Researchers' Publications

Recent evidence points to a role of the primary visual cortex that goes beyond visual processing into high-level cognitive and motor-related functions, including action planning, even in absence of feedforward visual information. It has been proposed that, at the neural level, motor imagery is a simulation based on motor representations, and neuroimaging studies have shown overlapping and shared activity patterns for motor imagery and action execution in frontal and parietal cortices. Yet, the role of the early visual cortex in motor imagery remains unclear. Here we used multivoxel pattern analyses on functional magnetic resonance imaging (fMRI) data to examine whether …

Pain In The Newborn Brain: A Neural Signature, Emma G. Duerden, Steven P. Miller

Brain and Mind Institute Researchers' Publications

No abstract provided.

An Auditory-Perceptual And Pupillometric Study Of Vocal Strain And Listening Effort In Adductor Spasmodic Dysphonia, Mojgan Farahani, Vijay Parsa, Björn Herrmann, Mason Kadem, Ingrid Johnsrude, Philip C. Doyle

Brain and Mind Institute Researchers' Publications

© 2020 by the authors. This study evaluated ratings of vocal strain and perceived listening effort by normal hearing participants while listening to speech samples produced by talkers with adductor spasmodic dysphonia (AdSD). In addition, objective listening effort was measured through concurrent pupillometry to determine whether listening to disordered voices changed arousal as a result of emotional state or cognitive load. Recordings of the second sentence of the "Rainbow Passage" produced by talkers with varying degrees of AdSD served as speech stimuli. Twenty naïve young adult listeners perceptually evaluated these stimuli on the dimensions of vocal strain and listening effort …

Navigating The “Blind World”: The Psychosocial And Occupational Experiences Of Parents Of Adolescents With Visual Impairments, Peiwen Cao

Electronic Thesis and Dissertation Repository

Using a constructivist narrative inquiry approach, this research study sought to explore how parents of adolescents with visual impairments story their psychosocial and occupational experiences. Participants of the study consisted of four parents who were currently raising adolescents with visual impairments between the ages of 14 to 17. Participants took part in two in-depth narrative interviews, in which they answered several open-ended questions about their experiences of raising their adolescent children who were visually impaired. Participants also participated in a brief concluding interview session, in which they provided feedback on the narrative that I constructed based on their interview responses. …

Exploring Co-Occupation Between University Students And Older Adults Living Together In A Retirement Home, Rachel J. Gorjup

Electronic Thesis and Dissertation Repository

Intergenerational housing programs in which young and older adults live together have been implemented worldwide, yet research exploring these programs is sparse. An important component of intergenerational living seems to be the activities that young and older adults engage in together. Taking a lens of co-occupation, that is everyday occupations performed together by two or more people, this thesis explored how university students and older adults, living together in a retirement home, enacted co-occupations and the factors that shaped these co-occupations. A focused ethnography, involving interviews and observations, was used to gain insight into the co-occupational experiences of the students …

The Impact Of Ethnicity And Immigration On Prostate Cancer Mortality In Canada, Noah Stern

Electronic Thesis and Dissertation Repository

Despite the prevalence of prostate cancer its pathogenesis remains unclear. Marked differences in mortality rates have been observed between countries, however, it is unclear whether the source of the observed differences is driven by underlying genetics, geographic, or social factors. This thesis investigated the impact of ethnicity and immigration on prostate cancer mortality in Canada using the Canadian Census Health and Environment Cohort. South Asian and East Asian men were seen to be at decreased risk of prostate cancer mortality, while no increased risk was observed in black men. These results affirm studies showing lower risks in Asian men; however, …

Investigating Children's Experiences And Participation In A Free Community-Based Physical Activity Program: The Grade 5 Act-I-Pass, Emma E. Ostermeier

Electronic Thesis and Dissertation Repository

Physical activity is an important component of children’s health and development; however, a majority of Canadian children are not meeting the physical activity recommendations. This thesis aimed to identify the factors that influenced children’s enrollment and participation in a free community-based physical activity program, the Grade 5 ACT-i-Pass (G5AP). This thesis consisted of two individual, but interrelated studies. First, focus groups with G5AP participants were used to explore the factors that influenced children’s perceived physical activity levels and participation in the program. Second, a spatially-targeted promotional campaign was developed and implemented to help evaluate the impact of promotions on program …

Psychological Predictors Of Injury In Collegiate Cheerleaders, Alexander Marchand

Electronic Thesis and Dissertation Repository

According to the revised stress-injury model (Williams & Andersen, 1998), greater life stress predicts greater vulnerability to athletic injury, with this relationship being strongest among athletes exhibiting competitive anxiety, less social support, and non-adaptive coping skills. This study tested the validity of this model among collegiate cheerleaders, an injury-prone athlete group. Ninety-two collegiate cheerleaders recorded instances of injury over 12 weeks. Measures of life stress, competitive anxiety, coping style, social support, and previous injury were obtained. Heightened negative life stress did not coincide with greater injury. A positive stress-injury relationship was observed among cheerleaders reporting high avoidance coping. A negative …

The Human Cerebellum Has Almost 80% Of The Surface Area Of The Neocortex, Martin I. Sereno, J. Rn Diedrichsen, Mohamed Tachrount, Guilherme Testa-Silva, Helen D Arceuil, Chris De Zeeuw

Brain and Mind Institute Researchers' Publications

© 2020 National Academy of Sciences. All rights reserved. The surface of the human cerebellar cortex is much more tightly folded than the cerebral cortex. It was computationally reconstructed for the first time to the level of all individual folia from multicontrast high-resolution postmortem MRI scans. Its total shrinkage-corrected surface area (1,590 cm2) was larger than expected or previously reported, equal to 78% of the total surface area of the human neocortex. The unfolded and flattened surface comprised a narrow strip 10 cm wide but almost 1 m long. By applying the same methods to the neocortex and cerebellum of …

Pupil Size Is Modulated By The Size Of Equal-Luminance Gratings, Jie Gao, Athena Ko, Yoshiko Yabe, Melvyn A. Goodale, Juan Chen

Brain and Mind Institute Researchers' Publications

© 2020 The Authors. Pupil size changes with light. For this reason, researchers studying the effect of attention, contextual processing, and arousal on the pupillary response have matched the mean luminance of their stimuli across conditions to eliminate the contribution of differences in light levels. Here, we argue that the match of mean luminance is not enough. In Experiment 1, we presented a circular sinewave grating on a gray background for 2 seconds. The area of the grating could be 3°, 6°, or 9°. The mean luminance of each grating was equal to the luminance of the gray background, such …

Longitudinal Changes Of Brain Microstructure And Function In Nonconcussed Female Rugby Players, Kathryn Y. Manning, Jeffrey S. Brooks, James P. Dickey, Alexandra Harriss, Lisa Fischer, Tatiana Jevremovic, Kevin Blackney, Christy Barreira, Arthur Brown, Robert Bartha, Tim Doherty, Douglas Fraser, Jeff Holmes, Gregory A. Dekaban, Ravi S. Menon

Brain and Mind Institute Researchers' Publications

ObjectiveTo longitudinally assess brain microstructure and function in female varsity athletes participating in contact and noncontact sports.MethodsConcussion-free female rugby players (n = 73) were compared to age-matched (ages 18-23) female swimmers and rowers (n = 31) during the in- and off-season. Diffusion and resting-state fMRI (rs-fMRI) measures were the primary outcomes. The Sports Concussion Assessment Tool and head impact accelerometers were used to monitor symptoms and impacts, respectively.ResultsWe found cross-sectional (contact vs noncontact) and longitudinal (in- vs off-season) changes in white matter diffusion measures and rs-fMRI network connectivity in concussion-free contact athletes relative to noncontact athletes. In particular, mean, axial, …

Looming And Receding Visual Networks In Awake Marmosets Investigated With Fmri, Justine C. Cléry, David J. Schaeffer, Yuki Hori, Kyle M. Gilbert, Lauren K. Hayrynen, Joseph S. Gati, Ravi S. Menon, Stefan Everling

Brain and Mind Institute Researchers' Publications

© 2020 The Author(s) An object that is looming toward a subject or receding away contains important information for determining if this object is dangerous, beneficial or harmless. This information (motion, direction, identity, time-to-collision, size, velocity) is analyzed by the brain in order to execute the appropriate behavioral responses depending on the context: fleeing, freezing, grasping, eating, exploring. In the current study, we performed ultra-high-field functional MRI (fMRI) at 9.4T in awake marmosets to explore the patterns of brain activation elicited by visual stimuli looming toward or receding away from the monkey. We found that looming and receding visual stimuli …