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Cultural Responses To Pain In Uk Children Of Primary School Age: A Mixed-Methods Study., Pary M. Azize, Ruth Endacott, Allegra Cattani, Ann Humphreys Jan 2014

Cultural Responses To Pain In Uk Children Of Primary School Age: A Mixed-Methods Study., Pary M. Azize, Ruth Endacott, Allegra Cattani, Ann Humphreys

School of Nursing and Midwifery

Pain-measurement tools are often criticized for not addressing the influence of culture and ethnicity on pain. This study examined how children who speak English as a primary or additional language discuss pain. Two methods were used in six focus group interviews with 34 children aged 4-7 years: (i) use of drawings from the Pediatric Pain Inventory to capture the language used by children to describe pain; and (ii) observation of the children's placing of pain drawings on red/amber/green paper to denote perceived severity of pain. The findings demonstrated that children with English as an additional language used less elaborate language …


Evaluating The Application Of Research-Based Guidance To The Design Of An Emergency Preparedness Leaflet., E. Hellier, J. Edworthy, L. Newbold, K. Titchener, M. Tucker, E. Gabe-Thomas Jan 2014

Evaluating The Application Of Research-Based Guidance To The Design Of An Emergency Preparedness Leaflet., E. Hellier, J. Edworthy, L. Newbold, K. Titchener, M. Tucker, E. Gabe-Thomas

School of Psychology

UNLABELLED: Guidelines for the design of emergency communications were derived from primary research and interrogation of the literature. The guidelines were used to re-design a nuclear emergency preparedness leaflet routinely distributed to households in the local area. Pre-test measures of memory for, and self-reported understanding of, nuclear safety information were collected. The findings revealed high levels of non-receipt of the leaflet, and among those who did receive it, memory for safety advice was poor. Subjective evaluations of the trial leaflet suggested that it was preferred and judged easier to understand than the original. Objective measures of memory for the two …


Neuronal Activity Regulates Extracellular Tau In Vivo, Kaoru Yamada, Jerrah K. Holth, Fan Liao, Floy R. Stewart, Thomas E. Mahan, Hong Jiang, John R. Cirrito, Tirth K. Patel, Katja Hochgräfe, Eva-Maria Mandelkow, David M. Holtzman Jan 2014

Neuronal Activity Regulates Extracellular Tau In Vivo, Kaoru Yamada, Jerrah K. Holth, Fan Liao, Floy R. Stewart, Thomas E. Mahan, Hong Jiang, John R. Cirrito, Tirth K. Patel, Katja Hochgräfe, Eva-Maria Mandelkow, David M. Holtzman

Open Access Publications

Tau is primarily a cytoplasmic protein that stabilizes microtubules. However, it is also found in the extracellular space of the brain at appreciable concentrations. Although its presence there may be relevant to the intercellular spread of tau pathology, the cellular mechanisms regulating tau release into the extracellular space are not well understood. To test this in the context of neuronal networks in vivo, we used in vivo microdialysis. Increasing neuronal activity rapidly increased the steady-state levels of extracellular tau in vivo. Importantly, presynaptic glutamate release is sufficient to drive tau release. Although tau release occurred within hours in response to …


Higher Breakfast Glycaemic Load Is Associated With Increased Metabolic Syndrome Risk, Including Lower Hdl-Cholesterol Concentrations And Increased Tag Concentrations, In Adolescent Girls, Analise Nicholl, Mary Du Heaume, Trevor A. Mori, Lawrence J. Beilin, Wendy H. Oddy, Alexandra P. Bremner, Therese A. O'Sullivan Jan 2014

Higher Breakfast Glycaemic Load Is Associated With Increased Metabolic Syndrome Risk, Including Lower Hdl-Cholesterol Concentrations And Increased Tag Concentrations, In Adolescent Girls, Analise Nicholl, Mary Du Heaume, Trevor A. Mori, Lawrence J. Beilin, Wendy H. Oddy, Alexandra P. Bremner, Therese A. O'Sullivan

Research outputs 2014 to 2021

Almost all previous studies examining the associations between glycaemic load (GL) and metabolic syndrome risk have used a daily GL value. The daily value does not distinguish between peaks of GL intake over the day, which may be more closely associated with the risk of the metabolic syndrome. The aim of the present study was to investigate the cross-sectional associations between daily and mealtime measures of GL and metabolic syndrome risk, including metabolic syndrome components, in adolescents. Adolescents participating in the 14-year follow-up of the Western Australian Pregnancy Cohort (Raine) Study completed 3 d food records and metabolic assessments. Breakfast …


The Reliability Of An Adolescent Dietary Pattern Identified Using Reduced-Rank Regression: Comparison Of A Ffq And 3 D Food Record, Geeta Appannah, Gerda K. Pot, Therese A. O'Sullivan, Wendy H. Oddy, Susan A. Jebb, Gina L. Ambrosini Jan 2014

The Reliability Of An Adolescent Dietary Pattern Identified Using Reduced-Rank Regression: Comparison Of A Ffq And 3 D Food Record, Geeta Appannah, Gerda K. Pot, Therese A. O'Sullivan, Wendy H. Oddy, Susan A. Jebb, Gina L. Ambrosini

Research outputs 2014 to 2021

Despite the increasing use of dietary patterns (DP) to study diet and health outcomes, relatively few studies have examined the reliability of DP using different dietary assessment methods. Reduced-rank regression (RRR) is an emerging statistical method that incorporates a priori information to characterise DP related to specific outcomes of interest. The aim of the present study was to compare DP identified using the RRR method in a FFQ with those in a 3 d food record (FR). Participants were 783 adolescents from the Western Australian Pregnancy (Raine) Cohort Study who completed both a FFQ and FR at 14 years of …


Young Australian Adults’ Reactions To Viewing Personalised Uv Photoaged Photographs, Lori L. Presti, Paul Chang, Myra F. Taylor Jan 2014

Young Australian Adults’ Reactions To Viewing Personalised Uv Photoaged Photographs, Lori L. Presti, Paul Chang, Myra F. Taylor

Research outputs 2014 to 2021

Background: Despite two nationwide sun-protection awareness campaigns, young Australian adults continue to sunbathe. Since their primary motivation for tanning is appearance enhancement, it may well be that campaigns that highlight the negative effects of tanning on appearance are more effective than campaigns that emphasise the health risks associated with sun exposure.Aims: This study aims to explore young adults’ reactions to viewing a photoaged photograph of the sun damage already visible in their facial image.Methods: Semi-structured interviews were conducted with seven females and three males aged 20-30 years. The interview transcripts were transcribed verbatim and were then subjected to Interpretive Phenomenological …


Metals In Commonly Eaten Groceries In Western Australia: A Market Basket Survey And Dietary Assessment, Anna Callan, Andrea Hinwood, Amanda Devine Jan 2014

Metals In Commonly Eaten Groceries In Western Australia: A Market Basket Survey And Dietary Assessment, Anna Callan, Andrea Hinwood, Amanda Devine

Research outputs 2014 to 2021

Children’s dietary exposure to metals has received limited attention in Australia. This study undertook a market basket survey and analysed 253 food and beverages for metals. These data were used in conjunction with recent average diet data for children in Western Australia to model dietary metals exposure, with mean metals intakes calculated for boys and girls aged 8, 12, 13 and 16 years. Results show that for some metals, including cadmium, nickel and manganese, dietary intake guidelines have been exceeded in younger children. The mean modelled cadmium intake in children aged 8 years was almost 60% of the World Health …


Risk Factors For Cerebrovascular Disease Mortality Among The Elderly In Beijing: A Competing Risk Analysis, Zhe Tang, Tao Zhou, Yanxia Luo, Changchun Xie, Da Huo, Lixin Tao, Lei Pan, Fei Sun, Huiping Zhu, Xinghua Yang, Wei Wang, Aoshuang Yan, Xia Li, Xiuhua Guo Jan 2014

Risk Factors For Cerebrovascular Disease Mortality Among The Elderly In Beijing: A Competing Risk Analysis, Zhe Tang, Tao Zhou, Yanxia Luo, Changchun Xie, Da Huo, Lixin Tao, Lei Pan, Fei Sun, Huiping Zhu, Xinghua Yang, Wei Wang, Aoshuang Yan, Xia Li, Xiuhua Guo

Research outputs 2014 to 2021

Objective: To examine the associations of combined lifestyle factors and physical conditions with cerebrovascular diseases (CBVD) mortality, after accounting for competing risk events, including death from cardiovascular diseases, cancers and other diseases. Methods: Data on 2010 subjects aged over 55 years were finally analyzed using competing risk models. All the subjects were interviewed by the Beijing Longitudinal Study of Aging (BLSA), in China, between 1 January 1992 and 30 August 2009. Results: Elderly females were at a lower risk of death from CBVD than elderly males (HR = 0.639, 95% CI = 0.457-0.895). Increasing age (HR = 1.543, 95% CI …


Contourlet Textual Features: Improving The Diagnosis Of Solitary Pulmonary Nodules In Two Dimensional Ct Images, Jingjing Wang, Tao Sun, Ni Gao, Desmond D. Menon, Yanxia Luo, Qi Gao, Xia Li, Wei Wang, Huiping Zhu, Pingxin Lv, Zhigang Liang, Lixin Tao, Xiangtong Liu, Xiuhua Guo Jan 2014

Contourlet Textual Features: Improving The Diagnosis Of Solitary Pulmonary Nodules In Two Dimensional Ct Images, Jingjing Wang, Tao Sun, Ni Gao, Desmond D. Menon, Yanxia Luo, Qi Gao, Xia Li, Wei Wang, Huiping Zhu, Pingxin Lv, Zhigang Liang, Lixin Tao, Xiangtong Liu, Xiuhua Guo

Research outputs 2014 to 2021

Materials and Methods: A total of 6,299 CT images were acquired from 336 patients, with 1,454 benign pulmonary nodule images from 84 patients (50 male, 34 female) and 4,845 malignant from 252 patients (150 male, 102 female). Further to this, nineteen patient information categories, which included seven demographic parameters and twelve morphological features, were also collected. A contourlet was used to extract fourteen types of textural features. These were then used to establish three support vector machine models. One comprised a database constructed of nineteen collected patient information categories, another included contourlet textural features and the third one contained both …


Self-Regulating Smoking And Snacking Through Physical Activity., Hwajung Oh, Adrian H. Taylor Jan 2014

Self-Regulating Smoking And Snacking Through Physical Activity., Hwajung Oh, Adrian H. Taylor

Peninsula Medical School

OBJECTIVE: Emotional snacking contributes to weight gain after smoking cessation. Exercise acutely reduces cravings for cigarettes and snack food. This study examined if different exercise intensities acutely reduces snack and cigarette cravings and attentional bias (AB) to video clips of snacks and cigarettes among abstinent smokers. METHODS: Abstinent smokers (and snackers; N = 23) randomly did 15 mins of moderate and vigorous cycling and a passive control in a cross-over design. Visual initial AB (IAB) and maintained AB (MAB) were assessed pre- and after treatment while watching paired snacking/neutral or smoking/neutral video clips. Desire to snack and smoke were assessed …


Positive Correlation Between The Expression Of Heag1 And Hif-1Α In Breast Cancers: An Observational Study, Qingxuan Lai, Ting Wang, Qingqing Guo, Yuxiang Zhang, Youxin Wang, Li Yuan, Rui Ling, Yan He, Wei Wang Jan 2014

Positive Correlation Between The Expression Of Heag1 And Hif-1Α In Breast Cancers: An Observational Study, Qingxuan Lai, Ting Wang, Qingqing Guo, Yuxiang Zhang, Youxin Wang, Li Yuan, Rui Ling, Yan He, Wei Wang

Research outputs 2014 to 2021

Objectives: To explore the expression patterns of Eag1 (ether á go-go 1) and HIF-1α (hypoxia-inducible factor 1α) in a cohort of patients with breast cancer. Setting: Department of general surgery in an upper first-class hospital in Xi'an, China. Participants: A total of 112 female Han Chinese patients with a diagnosis of invasive ductal carcinoma were included. Patients with main internal diseases, such as cardiovascular, endocrine, gastroenterological, haematological, infectious diseases, etc, were excluded. Primary and secondary outcome measures: Expression profiles of Eag1 and HIF-1α. Results: Eag1 and HIF-1α were overexpressed in the tumour tissues compared with the pair-matched control tissues, p=0.002 …


General Practitioners' Experiences Of Bereavement Care And Their Educational Support Needs: A Qualitative Study, Moira O'Connor, Lauren J. Breen Jan 2014

General Practitioners' Experiences Of Bereavement Care And Their Educational Support Needs: A Qualitative Study, Moira O'Connor, Lauren J. Breen

Research outputs 2014 to 2021

Background: General Practitioners (GPs) are well-positioned to provide grief support to patients. Most GPs view the provision of bereavement care as an important aspect of their role and the GP is the health professional that many people turn to when they need support. We aimed to explore GPs' understandings of bereavement care and their education and professional development needs in relation to bereavement care. Methods. An in-depth qualitative design was adopted using a social constructionist approach as our aims were exploratory and applied. Nineteen GPs (12 women and 7 men) living in Western Australia were interviewed; 14 were based in …


Low Back Pain Beliefs Are Associated To Age, Location Of Work, Education And Pain-Related Disability In Chinese Healthcare Professionals Working In China: A Cross Sectional Survey, B K. Tan, Anne J. Smith, Peter B. O'Sullivan, Gang Chen, Angus F. Burnett, Andrew M. Briggs Jan 2014

Low Back Pain Beliefs Are Associated To Age, Location Of Work, Education And Pain-Related Disability In Chinese Healthcare Professionals Working In China: A Cross Sectional Survey, B K. Tan, Anne J. Smith, Peter B. O'Sullivan, Gang Chen, Angus F. Burnett, Andrew M. Briggs

Research outputs 2014 to 2021

Background: Low back pain (LBP) is the leading cause of disability worldwide. Evidence pointing towards a more efficacious model of care using a biopsychosocial approach for LBP management highlights the need to understand the pain-related beliefs of patients and those who treat them. The beliefs held by healthcare professionals (HCPs) are known to influence the treatment advice given to patients and consequently management outcomes. Back pain beliefs are known to be influenced by factors such as culture, education, health literacy, place of work, personal experience of LBP and the sequelae of LBP such as disability. There is currently a knowledge …


Acute Hospital-Based Services Utilisation During The Last Year Of Life In New South Wales, Australia: Methods For A Population-Based Study, Dianne L. O'Connell, David E. Goldsbury, Patricia Davidson, Afaf Girgis, Jane L. Phillips, Michael Piza, Anne Wilkinson, Jane M. Ingham Jan 2014

Acute Hospital-Based Services Utilisation During The Last Year Of Life In New South Wales, Australia: Methods For A Population-Based Study, Dianne L. O'Connell, David E. Goldsbury, Patricia Davidson, Afaf Girgis, Jane L. Phillips, Michael Piza, Anne Wilkinson, Jane M. Ingham

Research outputs 2014 to 2021

Objectives: The aim of this study is to describe healthcare utilisation in the last year of life for people in Australia, to help inform health services planning. The methods and datasets that are being used are described in this paper. Design/Setting: Linked, routinely collected administrative health data are being analysed for all people who died in New South Wales (NSW), Australia's most populous state, in 2007. The data comprised linked death records (2007), hospital admissions and emergency department presentations (2006-2007) and cancer registrations (1994-2007). Participants: There were 46 341 deaths in NSW in 2007. The initial analyses include 45 760 …


Reaching Perinatal Women Online: The Healthy You, Healthy Baby Website And App, Lydia Hearn, Margaret Miller, Leanne Lester Jan 2014

Reaching Perinatal Women Online: The Healthy You, Healthy Baby Website And App, Lydia Hearn, Margaret Miller, Leanne Lester

Research outputs 2014 to 2021

Overwhelming evidence reveals the close link between unwarranted weight gain among childbearing women and childhood adiposity. Yet current barriers limit the capacity of perinatal health care providers (PHCPs) to offer healthy lifestyle counselling. In response, today's Internet savvy women are turning to online resources to access health information, with the potential of revolutionising health services by enabling PHCPs to guide women to appropriate online resources. This paper presents the findings of a project designed to develop an online resource to promote healthy lifestyles during the perinatal period. The methodology involved focus groups and interviews with perinatal women and PHCPs to …


Iron Status And The Acute Post-Exercise Hepcidin Response In Athletes, Peter Peeling, Marc Sim, Claire E. Badenhorst, Brian Dawson, Andrew D. Govus, Chris R. Abbiss, Dorine W. Swinkels, Debbie Trinder Jan 2014

Iron Status And The Acute Post-Exercise Hepcidin Response In Athletes, Peter Peeling, Marc Sim, Claire E. Badenhorst, Brian Dawson, Andrew D. Govus, Chris R. Abbiss, Dorine W. Swinkels, Debbie Trinder

Research outputs 2014 to 2021

This study explored the relationship between serum ferritin and hepcidin in athletes. Baseline serum ferritin levels of 54 athletes from the control trial of five investigations conducted in our laboratory were considered; athletes were grouped according to values 100 mg/L (SF>100). Data pooling resulted in each athlete completing one of five running sessions: (1) 8x3 min at 85% vVO2peak; (2) 5x4 min at 90% vVO2peak; (3) 90 min continuous at 75% vVO2peak; (4) 40 min continuous at 75% vVO 2peak; (5) 40 min continuous at 65% vVO2peak. Athletes from each running session were represented amongst all four groups; hence, …


Pulmonary Function In Patients With Huntington's Disease, Alvaro Reyes, Travis Cruickshank, Mel Ziman, Ken Nosaka Jan 2014

Pulmonary Function In Patients With Huntington's Disease, Alvaro Reyes, Travis Cruickshank, Mel Ziman, Ken Nosaka

Research outputs 2014 to 2021

Background: Huntington's disease (HD) is a neurodegenerative disorder characterized by progressive motor, cognitive and psychiatric disturbances. Chest muscle rigidity, respiratory muscle weakness, difficulty in clearing airway secretions and swallowing abnormalities have been described in patients with neurodegenerative disorders including HD. However limited information is available regarding respiratory function in HD patients. The purpose of this study was to investigate pulmonary function of patients with HD in comparison to healthy volunteers, and its association with motor severity.Methods: Pulmonary function measures were taken from 18 (11 male, 7 female) manifest HD patients (53 ± 10 years), and 18 (10 male, 8 female) …


Predictors Of Grandparental Investment Decisions In Contemporary Europe: Biological Relatedness And Beyond, David A. Coall, Sonja Hilbrand, Ralph Hertwig Jan 2014

Predictors Of Grandparental Investment Decisions In Contemporary Europe: Biological Relatedness And Beyond, David A. Coall, Sonja Hilbrand, Ralph Hertwig

Research outputs 2014 to 2021

Across human cultures, grandparents make a valued contribution to the health of their families and communities. Moreover, evidence is gathering that grandparents have a positive impact on the development of grandchildren in contemporary industrialized societies. A broad range of factors that influence the likelihood grandparents will invest in their grandchildren has been explored by disciplines as diverse as sociology, economics, psychology and evolutionary biology. To progress toward an encompassing framework, this study will include biological relatedness between grandparents and grandchildren, a factor central to some discipline's theoretical frameworks (e.g., evolutionary biology), next to a wide range of other factors in …


Effect Of Head And Limb Orientation On Trunk Muscle Activation During Abdominal Hollowing In Chronic Low Back Pain, Kevin Parfrey, Sean G. Gibbons, Eric J. Drinkwater, David G. Behm Jan 2014

Effect Of Head And Limb Orientation On Trunk Muscle Activation During Abdominal Hollowing In Chronic Low Back Pain, Kevin Parfrey, Sean G. Gibbons, Eric J. Drinkwater, David G. Behm

Research outputs 2014 to 2021

Background: Individuals with chronic low back pain (CLBP) have altered activations patterns of the anterior trunk musculature when performing the abdominal hollowing manœuvre (attempt to pull umbilicus inward and upward towards the spine). There is a subgroup of individuals with CLBP who have high neurocognitive and sensory motor deficits with associated primitive reflexes (PR). The objective of the study was to determine if orienting the head and extremities to positions, which mimic PR patterns would alter anterior trunk musculature activation during the hollowing manoeuvre. Methods. This study compared surface electromyography (EMG) of bilateral rectus abdominis (RA), external oblique (EO), and …


Monitoring Changes In Circulating Tumour Cells As A Prognostic Indicator Of Overall Survival And Treatment Response In Patients With Metastatic Melanoma, Dragana Klinac, Elin S. Gray, James B. Freeman, Anna Reid, Samantha Bowyer, Michael Millward, Mel Ziman Jan 2014

Monitoring Changes In Circulating Tumour Cells As A Prognostic Indicator Of Overall Survival And Treatment Response In Patients With Metastatic Melanoma, Dragana Klinac, Elin S. Gray, James B. Freeman, Anna Reid, Samantha Bowyer, Michael Millward, Mel Ziman

Research outputs 2014 to 2021

Background: New effective treatments for metastatic melanoma greatly improve survival in a proportion of patients. However biomarkers to identify patients that are more likely to benefit from a particular treatment are needed. We previously reported on a multimarker approach for the detection of heterogenous melanoma circulating tumour cells (CTCs). Here we evaluated the prognostic value of this multimarker quantification of CTCs and investigated whether changes in CTC levels during therapy can be used as a biomarker of treatment response and survival outcomes.Methods: CTCs were captured by targeting the melanoma associated markers MCSP and MCAM as well as the melanoma stem …


Reducing Depression During The Menopausal Transition: Study Protocol For A Randomised Controlled Trial, Osvaldo P. Almeida, Kylie Marsh, Leon Flicker, Martha Hickey, Andrew Ford, Moira Sim Jan 2014

Reducing Depression During The Menopausal Transition: Study Protocol For A Randomised Controlled Trial, Osvaldo P. Almeida, Kylie Marsh, Leon Flicker, Martha Hickey, Andrew Ford, Moira Sim

Research outputs 2014 to 2021

Background: The menopausal transition (MT) is a biological inevitability for all ageing women that can be associated with changes in mood, including depressive symptoms. There is tentative evidence that women who develop depression during the MT have greater risk of subsequent depressive episodes, as well as increased health morbidity and mortality. Thus, preventing depression during the MT could enhance both current and the future health and well-being of women. This study aims to test the efficacy of a client-centred health promotion intervention to decrease the 12-month incidence of clinically significant symptoms of depression among women undergoing the MT.Methods/Design: This randomised …


Positive Patient Experiences In An Australian Integrative Oncology Centre, Bonnie J. Furzer, Anna S. Petterson, Kemi E. Wright, Karen E. Wallman, Timothy R. Ackland, David J. Joske Jan 2014

Positive Patient Experiences In An Australian Integrative Oncology Centre, Bonnie J. Furzer, Anna S. Petterson, Kemi E. Wright, Karen E. Wallman, Timothy R. Ackland, David J. Joske

Research outputs 2014 to 2021

Background: The purpose of this study was to explore the experiences of cancer patients' utilising complementary and integrative therapies (CIT) within integrative oncology centres across Western Australia.Methods: Across four locations 135 patients accessed CIT services whilst undergoing outpatient medical treatment for cancer. Of the 135 patients, 66 (61 ± 12 y; female n = 45; male n = 21) agreed to complete a personal accounts questionnaire consisting of open-ended questions designed to explore patients' perceptions of CIT. All results were transcribed into nVivo (v9) and using thematic analysis, key themes were identified.Results: Of the 66 participants, 100% indicated they would …


Day Occupation Is Associated With Psychopathology For Adolescents And Young Adults With Down Syndrome, Kitty-Rose R. Foley, Peter Jacoby, Stewart Einfeld, Sonya Girdler, Jenny Bourke, Vivienne Riches, Helen Leonard Jan 2014

Day Occupation Is Associated With Psychopathology For Adolescents And Young Adults With Down Syndrome, Kitty-Rose R. Foley, Peter Jacoby, Stewart Einfeld, Sonya Girdler, Jenny Bourke, Vivienne Riches, Helen Leonard

Research outputs 2014 to 2021

Background: Young adults with Down syndrome experience increased rates of emotional and behavioural problems compared with the general population. Most adolescents with Down syndrome living in Western Australia participate in sheltered employment as their main day occupation. Relationship between day occupation and changes in behaviour has not been examined. Therefore, the aim of this research was to explore any relationship between post school day occupations and changes in the young person's behaviour.Methods: The Down syndrome Needs Opinion Wishes database was used for case ascertainment of young adults aged 15 to 32 years with Down syndrome. Families of 118 young people …


Effect Of Bdnf Val66met On Memory Decline And Hippocampal Atrophy In Prodromal Alzheimer's Disease: A Preliminary Study, Yen Y. Lim, Victor L. Villemagne, Simon M. Laws, David Ames, Robert H. Pietrzak, Kathryn A. Ellis, Karra Harrington, Pierrick Bourgeat, Ashley I. Bush, Ralph N. Martins, Colin L. Masters, Christopher C. Rowe, Paul Maruff Jan 2014

Effect Of Bdnf Val66met On Memory Decline And Hippocampal Atrophy In Prodromal Alzheimer's Disease: A Preliminary Study, Yen Y. Lim, Victor L. Villemagne, Simon M. Laws, David Ames, Robert H. Pietrzak, Kathryn A. Ellis, Karra Harrington, Pierrick Bourgeat, Ashley I. Bush, Ralph N. Martins, Colin L. Masters, Christopher C. Rowe, Paul Maruff

Research outputs 2014 to 2021

Objective: Cross-sectional genetic association studies have reported equivocal results on the relationship between the brain-derived neurotrophic factor (BDNF) Val66Met and risk of Alzheimer's disease (AD). As AD is a neurodegenerative disease, genetic influences may become clearer from prospective study. We aimed to determine whether BDNF Val66Met polymorphism influences changes in memory performance, hippocampal volume, and Aβ accumulation in adults with amnestic mild cognitive impairment (aMCI) and high Aβ. Methods: Thirty-four adults with aMCI were recruited from the Australian, Imaging, Biomarkers and Lifestyle (AIBL) Study. Participants underwent PiB-PET and structural MRI neuroimaging, neuropsychological assessments and BDNF genotyping at baseline, 18 month, …


An Anemia Of Alzheimer's Disease, N G. Faux, A Rembach, J Wiley, K A. Ellis, D Ames, C J. Fowler, Ralph N. Martins, K K. Pertile, R L. Rumble, B Trounson, C L. Masters, A I. Bush Jan 2014

An Anemia Of Alzheimer's Disease, N G. Faux, A Rembach, J Wiley, K A. Ellis, D Ames, C J. Fowler, Ralph N. Martins, K K. Pertile, R L. Rumble, B Trounson, C L. Masters, A I. Bush

Research outputs 2014 to 2021

Lower hemoglobin is associated with cognitive impairment and Alzheimer's disease (AD). Since brain iron homeostasis is perturbed in AD, we investigated whether this is peripherally reflected in the hematological and related blood chemistry values from the Australian Imaging Biomarker and Lifestyle (AIBL) study (a community-based, cross-sectional cohort comprising 768 healthy controls (HC), 133 participants with mild cognitive impairment (MCI) and 211 participants with AD). We found that individuals with AD had significantly lower hemoglobin, mean cell hemoglobin concentrations, packed cell volume and higher erythrocyte sedimentation rates (adjusted for age, gender, APOE-ε4 and site). In AD, plasma iron, transferrin, transferrin saturation …


A Comparison Of Aphasia Therapy Outcomes Before And After A Very Early Rehabilitation Programme Following Stroke, Erin Godecke, Natalie A. Ciccone, Andrew S. Granger, Tapan Rai, Deborah West, Angela Cream, Jade Cartwright, Graeme J. Hankey Jan 2014

A Comparison Of Aphasia Therapy Outcomes Before And After A Very Early Rehabilitation Programme Following Stroke, Erin Godecke, Natalie A. Ciccone, Andrew S. Granger, Tapan Rai, Deborah West, Angela Cream, Jade Cartwright, Graeme J. Hankey

Research outputs 2014 to 2021

Background Very early aphasia rehabilitation studies have shown mixed results. Differences in therapy intensity and therapy type contribute significantly to the equivocal results. Aims To compare a standardized, prescribed very early aphasia therapy regimen with a historical usual care control group at therapy completion (4-5 weeks post-stroke) and again at follow-up (6 months). Methods & Procedures This study compared two cohorts from successive studies conducted in four Australian acute/sub-acute hospitals. The studies had near identical recruitment, blinded assessment and data-collection protocols. The Very Early Rehabilitation (VER) cohort (N = 20) had mild-severe aphasia and received up to 20 1-h sessions …


Learning To Pronounce First Words In Three Languages: An Investigation Of Caregiver And Infant Behavior Using A Computational Model Of An Infant., Ian S. Howard, Piers Messum Jan 2014

Learning To Pronounce First Words In Three Languages: An Investigation Of Caregiver And Infant Behavior Using A Computational Model Of An Infant., Ian S. Howard, Piers Messum

School of Engineering, Computing and Mathematics

Words are made up of speech sounds. Almost all accounts of child speech development assume that children learn the pronunciation of first language (L1) speech sounds by imitation, most claiming that the child performs some kind of auditory matching to the elements of ambient speech. However, there is evidence to support an alternative account and we investigate the non-imitative child behavior and well-attested caregiver behavior that this account posits using Elija, a computational model of an infant. Through unsupervised active learning, Elija began by discovering motor patterns, which produced sounds. In separate interaction experiments, native speakers of English, French and …


English-Learning One- To Two-Year-Olds Do Not Show A Consonant Bias In Word Learning., Caroline Floccia, Thierry Nazzi, Luche C Delle, Silvana Poltrock, Jeremy Goslin Jan 2014

English-Learning One- To Two-Year-Olds Do Not Show A Consonant Bias In Word Learning., Caroline Floccia, Thierry Nazzi, Luche C Delle, Silvana Poltrock, Jeremy Goslin

School of Psychology

Following the proposal that consonants are more involved than vowels in coding the lexicon (Nespor, Peña & Mehler, 2003), an early lexical consonant bias was found from age 1;2 in French but an equal sensitivity to consonants and vowels from 1;0 to 2;0 in English. As different tasks were used in French and English, we sought to clarify this ambiguity by using an interactive word-learning study similar to that used in French, with British-English-learning toddlers aged 1;4 and 1;11. Children were taught two CVC labels differing on either a consonant or vowel and tested on their pairing of a third …


Mediofrontal Event-Related Potentials In Response To Positive, Negative And Unsigned Prediction Errors., Thomas D. Sambrook, Jeremy Goslin Jan 2014

Mediofrontal Event-Related Potentials In Response To Positive, Negative And Unsigned Prediction Errors., Thomas D. Sambrook, Jeremy Goslin

School of Psychology

Reinforcement learning models make use of reward prediction errors (RPEs), the difference between an expected and obtained reward. There is evidence that the brain computes RPEs, but an outstanding question is whether positive RPEs ("better than expected") and negative RPEs ("worse than expected") are represented in a single integrated system. An electrophysiological component, feedback related negativity, has been claimed to encode an RPE but its relative sensitivity to the utility of positive and negative RPEs remains unclear. This study explored the question by varying the utility of positive and negative RPEs in a design that controlled for other closely related …


Using Forced Choice To Test Belief Bias In Syllogistic Reasoning., Dries Trippas, Michael F. Verde, Simon J. Handley Jan 2014

Using Forced Choice To Test Belief Bias In Syllogistic Reasoning., Dries Trippas, Michael F. Verde, Simon J. Handley

School of Psychology

In deductive reasoning, believable conclusions are more likely to be accepted regardless of their validity. Although many theories argue that this belief bias reflects a change in the quality of reasoning, distinguishing qualitative changes from simple response biases can be difficult (Dube, Rotello, & Heit, 2010). We introduced a novel procedure that controls for response bias. In Experiments 1 and 2, the task required judging which of two simultaneously presented syllogisms was valid. Surprisingly, there was no evidence for belief bias with this forced choice procedure. In Experiment 3, the procedure was modified so that only one set of premises …