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Full-Text Articles in Social and Behavioral Sciences

Evaluation Of The Evidence Between Consumption Of Refined Grains And Health Outcomes, Peter G. Williams Feb 2012

Evaluation Of The Evidence Between Consumption Of Refined Grains And Health Outcomes, Peter G. Williams

Faculty of Health and Behavioural Sciences - Papers (Archive)

This review evaluates the available evidence on the relationship between consumption of refined grains and health outcomes. A total of 135 relevant articles were identified from database searches of studies published between 2000 and 2010. The great majority found no associations between the intake of refined grain foods and cardiovascular disease, diabetes, weight gain or overall mortality. A few studies found that very high intakes might be associated with some types of cancers, but at moderate levels of consumption the risks were not significant. The totality of evidence shows that consumption of up to 50% of all grain foods as …


Australian Adolescents' Compliance With Sun Protection Behaviours During Summer: The Importance Of The School Context, Melinda Williams, Sandra C. Jones, Peter Caputi, Donald Iverson Jan 2012

Australian Adolescents' Compliance With Sun Protection Behaviours During Summer: The Importance Of The School Context, Melinda Williams, Sandra C. Jones, Peter Caputi, Donald Iverson

Faculty of Health and Behavioural Sciences - Papers (Archive)

Adolescents exhibit significantly lower sun protection behaviours than adults in Australia. While many studies have assessed the sun protection behaviours of adolescents during summer, few studies have explored the differences in sun protection behaviours of adolescents across key contexts relevant to adolescents during summer—notably school time, weekends and school holidays. Greater understanding of differences in behaviours across these contexts provides more detailed explanations of the nature of adolescent ultraviolet exposure and thereby facilitates improved targeting of interventions for this segment whose behaviour is considered hard to change. In this study, we explore the differences in self-reported, habitual, sun protection behaviours …


Fish Consumption And Chd Mortality: An Updated Meta-Analysis Of Seventeen Cohort Studies, Jusheng Zheng, Tao Huang, Yinghua Yu, Xiaojie Hu, Bin Yang, Duo Li Jan 2012

Fish Consumption And Chd Mortality: An Updated Meta-Analysis Of Seventeen Cohort Studies, Jusheng Zheng, Tao Huang, Yinghua Yu, Xiaojie Hu, Bin Yang, Duo Li

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objective Results of studies on fish consumption and CHD mortality are inconsistent. The present updated meta-analysis was conducted to investigate the up-to-date pooling effects. Design A random-effects model was used to pool the risk estimates. Generalized least-squares regression and restricted cubic splines were used to assess the possible dose–response relationship. Subgroup analyses were conducted to examine the sources of heterogeneity. Setting PubMed and ISI Web of Science databases up to September 2010 were searched and secondary referencing qualified for inclusion in the study. Subjects Seventeen cohorts with 315 812 participants and average follow-up period of 15·9 years were identified. Results …


Reflection Impulsivity In Adolescent Cannabis Users: A Comparison With Alcohol-Using And Non-Substance-Using Adolescents, Nadia Solowij, Katy A. Jones, Megan E. Rozman, Sasha M. Davis, Joseph Ciarrochi, Patrick C. L Heaven, Nicole Pesa, Dan I. Lubman, Murat Yucel Jan 2012

Reflection Impulsivity In Adolescent Cannabis Users: A Comparison With Alcohol-Using And Non-Substance-Using Adolescents, Nadia Solowij, Katy A. Jones, Megan E. Rozman, Sasha M. Davis, Joseph Ciarrochi, Patrick C. L Heaven, Nicole Pesa, Dan I. Lubman, Murat Yucel

Faculty of Health and Behavioural Sciences - Papers (Archive)

Rationale Reflection impulsivity-a failure to gather and evaluate information before making a decision-is a critical component of risk-taking and substance use behaviours, which are highly prevalent during adolescence. Objectives and methods The Information Sampling Test was used to assess reflection impulsivity in 175 adolescents (mean age 18.3, range 16.5-20; 55% female)-48 cannabis users (2.3 years use, 10.8 days/month), 65 alcohol users, and 62 non-substance-using controls-recruited from a longitudinal cohort and from the general community and matched for education and IQ. Cannabis and alcohol users were matched on levels of alcohol consumption. Results Cannabis users sampled to the lowest degree of …


Online Advertising: Examining The Content And Messages Within Websites Targeted At Children, Lisa Kervin, Sandra C. Jones, Jessica Mantei Jan 2012

Online Advertising: Examining The Content And Messages Within Websites Targeted At Children, Lisa Kervin, Sandra C. Jones, Jessica Mantei

Faculty of Health and Behavioural Sciences - Papers (Archive)

It is recognised that from a young age children spend considerable portions of their leisure time on the Internet. In Australia a number of child-targeted magazines have associated websites, which have high and ever-increasing readership. We do not yet know the impact of this medium upon children. Overt advertising is evident on webpages, but so too are hidden advertisements in the written text, images and games. This material usually does not comply with existing broadcasting codes of practice for mainstream advertising. This article examines the instances of overt and covert advertisements for food within three websites monitored over a 12-month …


Using Interviews And Peer Pairs To Better Understand How School Environments Affect Young Children's Playground Physical Activity Levels: A Qualitative Study, Anne-Maree Parrish, Heather Yeatman, Donald Iverson, Ken Russell Jan 2012

Using Interviews And Peer Pairs To Better Understand How School Environments Affect Young Children's Playground Physical Activity Levels: A Qualitative Study, Anne-Maree Parrish, Heather Yeatman, Donald Iverson, Ken Russell

Faculty of Health and Behavioural Sciences - Papers (Archive)

School break times provide a daily opportunity for children to be active; however, research indicates this time is underutilized. Reasons for low children’s playground activity levels have primarily focused on physical barriers. This research aimed to contribute to physical environmental findings affecting children’s playground physical activity levels by identifying additional variables through the interview process. Thirteen public schools were included in the sample (total 2946 children). Physical activity and environmental data were collected over 3 days. Environmental variables were manually assessed at each of the 13 schools. Observational data were used to determine which three schools were the most and …


The Association Between Job Demands/Control And Health In Employed Parents: The Mediating Role Of Work-To-Family Interference And Enhancement, Christopher A. Magee, Natalie Stefanic, Peter Caputi, Donald C. Iverson Jan 2012

The Association Between Job Demands/Control And Health In Employed Parents: The Mediating Role Of Work-To-Family Interference And Enhancement, Christopher A. Magee, Natalie Stefanic, Peter Caputi, Donald C. Iverson

Faculty of Health and Behavioural Sciences - Papers (Archive)

"This paper examined whether work-to-family interference (WFI) and work-to-family enhancement (WFE) mediated the association between job demands/control and self-reported mental and physical health. Data were from the Household, Income and Labor Dynamics in Australia survey and included 1,404 Australian adults aged 18-64 years at baseline; 820 participants provided data at three time points (baseline, 12-month follow-up, and 24-month follow-up). Self-report questionnaires assessed mental and physical health, WFI and WFE, and job demands/control. Mediation analyzes performed on the longitudinal data indicated that WFI mediated the relationships between job demands/control and self-reported mental and physical health. The findings have implications for improving …


Food Toxicity And Safety, Peter Williams Jan 2012

Food Toxicity And Safety, Peter Williams

Faculty of Health and Behavioural Sciences - Papers (Archive)

Key Points

• Despite the many potential health risks associated with foods, in practice the degree of risk associated with the modern food supply is extremely low.

• By far the most important hazards of significance are those from biological agents: pathogenic bacteria, viruses, fungi and a few toxic seafoods.

• Trends to larger-scale production, longer distribution chains in the food supply, increased eating away from the home and the emergence of new pathogens means foodborne illness continues to be a significant public health issue.

• The assessment of the safety of food additives is led internationally by JECFA, but …


Noise , Beno Groothoff, Faioh Coh Jan 2012

Noise , Beno Groothoff, Faioh Coh

Faculty of Health and Behavioural Sciences - Papers (Archive)

No abstract provided.


Vection During Conflicting Multisensory Information About The Axis, Magnitude And Direction Of Self-Motion, April Ash, Stephen Palmisano Jan 2012

Vection During Conflicting Multisensory Information About The Axis, Magnitude And Direction Of Self-Motion, April Ash, Stephen Palmisano

Faculty of Health and Behavioural Sciences - Papers (Archive)

We examined the vection induced by consistent and conflicting multisensory information about self-motion. Observers viewed displays simulating constant-velocity self-motion in depth while physically oscillating their heads left ^ right or back ^ forth in time with a metronome. Their tracked head movements were either ignored or incorporated directly into the self-motion display (as an added simulated self-acceleration). When this head oscillation was updated into displays, sensory conflict was generated by simulating oscillation along: (i) an orthogonal axis to the head movement; or (ii) the same axis, but in a non-ecological direction. Simulated head oscillation always produced stronger vection than `no …


Measuring Women's Beliefs About Glass Ceilings: Development Of The Career Pathways Survey, Paul Smith, Nadia Crittenden, Peter Caputi Jan 2012

Measuring Women's Beliefs About Glass Ceilings: Development Of The Career Pathways Survey, Paul Smith, Nadia Crittenden, Peter Caputi

Faculty of Health and Behavioural Sciences - Papers (Archive)

Purpose - The purpose of this study is to develop a new measure called the Career Pathways Survey (CPS) which allows quantitative comparisons of women's beliefs about glass ceilings. Design/methodology/approach - A 34-item version of the CPS was completed by 243 women from all levels of management, mostly in Australia. An expanded 38-item CPS was administered to another sample of women (N = 307). Findings - Analyses of data from both studies yielded a four factor model of attitudes to glass ceilings: resilience, acceptance, resignation and denial. The factors demonstrated good internal consistency. Practical implications - The CPS allows a …


The Effect Of Dairy Consumption On Blood Pressure In Mid-Childhood: Caps Cohort Study, A M. Rangan, V L. Flood, G Denyer, J G. Ayer, K L. Webb, G B. Marks, D S. Celermajer, Tim Gill Jan 2012

The Effect Of Dairy Consumption On Blood Pressure In Mid-Childhood: Caps Cohort Study, A M. Rangan, V L. Flood, G Denyer, J G. Ayer, K L. Webb, G B. Marks, D S. Celermajer, Tim Gill

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background/objectives: It has been postulated that higher dairy consumption may affect blood pressure regulation. The aim of this study was to examine the association between dairy consumption and blood pressure in mid-childhood. Methods: Subjects (n=335) were participants of a birth cohort at high risk of asthma withinformation on diet at 18 months and blood pressure at 8 years. Multivariate analyses were used to assess the association of dairy consumption (serves) and micronutrient intakes (mg) at 18 m with blood pressure at 8 y. In a subgroup of children (n=201), dietary intake was measured at age 18 m and 9 y …


Comparing Attitudes To Fish Consumption Between Clinical Trial Participants And Non-Trial Individuals, Elizabeth P. Neale, Deborah Nolan-Clark, Yasmine C. Probst, Marijka J. Batterham, Linda C. Tapsell Jan 2012

Comparing Attitudes To Fish Consumption Between Clinical Trial Participants And Non-Trial Individuals, Elizabeth P. Neale, Deborah Nolan-Clark, Yasmine C. Probst, Marijka J. Batterham, Linda C. Tapsell

Faculty of Health and Behavioural Sciences - Papers (Archive)

Aim: The study aims to investigate attitudes and perceptions influencing fish consumption in a sample of clinical trial participants and compare these perceptions to those expressed by a sample of adults not involved in the trial. Methods: Six semi-structured focus groups were conducted; three with participants of a weight loss trial which incorporated specific and general fish consumption advice (n = 15) and three with nontrial participants from the same study population (n = 14). All data were recorded digitally and transcribed verbatim by the moderator. Data analysis was carried out using NVivo (QSR International Pty Ltd, Melbourne, Victoria, Australia). …


Effectiveness Of Home Based Early Intervention On Children's Bmi At Age 2: Randomised Controlled Trial, Li Ming Wen, Louise A. Baur, Judy M. Simpson, Chris Rissel, Karen Wardle, Victoria M. Flood Jan 2012

Effectiveness Of Home Based Early Intervention On Children's Bmi At Age 2: Randomised Controlled Trial, Li Ming Wen, Louise A. Baur, Judy M. Simpson, Chris Rissel, Karen Wardle, Victoria M. Flood

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objectives: To assess the effectiveness of a home-based early intervention on children’s BMI at age two. Design: Randomised controlled trial Setting: The Healthy Beginnings Trial was conducted in socially and economically disadvantaged areas of Sydney, Australia during 2007-2010. Participants: A total of 667 first-time mothers and their infants. Intervention: The intervention consisted of eight home visits from specially trained community nurses delivering a staged home-based intervention, one in the antenatal period, and seven at 1, 3, 5, 9, 12, 18 and 24 months after birth. Timing of the visits was designed to coincide with early childhood developmental milestones. …


Measurung Plate Waste In Hospitals, Karen L. Walton, Jacquie Krassie Jan 2012

Measurung Plate Waste In Hospitals, Karen L. Walton, Jacquie Krassie

Faculty of Health and Behavioural Sciences - Papers (Archive)

It has been suggested that the median plate wastage in hospitals is approximately 30% (range of 6–65%). The level of hospital food wastage is influenced by numerous parameters, including the menu, the setting, diet type, the type of food service distribution system used and its flexibility. Some food wastage is inevitable, as appetites are unpredictable. However, large amounts of food waste have a huge financial cost; and more importantly, it indicates that patients are not likely to be meeting their nutritional requirements. ‘Food is an integral and important part of a patient’s treatment but the food must be consumed if …


Are Parents' Working Patterns Associated With Their Child's Sleep? An Analysis Of Dual-Parent Families In Australia, Christopher A. Magee, Peter Caputi, Don C. Iverson Jan 2012

Are Parents' Working Patterns Associated With Their Child's Sleep? An Analysis Of Dual-Parent Families In Australia, Christopher A. Magee, Peter Caputi, Don C. Iverson

Faculty of Health and Behavioural Sciences - Papers (Archive)

Insufficient sleep in children predicts emotional and behavioral problems, poorer school performance, and health problems. Child sleep durations have declined in recent decades, suggesting a need to identify and understand predictors of short sleep. The present study investigated whether aspects of parental employment (i.e. parental work hours, and non-standard work hours) were associated with sleep in children. Data collected from 2477 children aged 6–7 years as part of the Longitudinal Study of Australian Children were used in this paper. Child sleep duration, bedtimes, and wake times were determined from parent self-report using time-use diaries. Parents completed a survey assessing their …


What Influences Australian Women To Not Drink During Pregnancy?, Sandra C. Jones, Joanne Telenta Jan 2012

What Influences Australian Women To Not Drink During Pregnancy?, Sandra C. Jones, Joanne Telenta

Faculty of Health and Behavioural Sciences - Papers (Archive)

There is a strong social norm against consuming alcohol during pregnancy. However, many women do not realise they are pregnant until the sixth week and are not provided with information about the risks of consuming alcohol until they visit a health professional in the second trimester. We conducted semi-structured interviews with 12 midwives and 12 pregnant women from two regions inNSWin 2008–09 to explore attitudes towards alcohol consumption during pregnancy, and the factors that may encourage or inhibit women from following the recommendation to abstain from drinking while pregnant. Both groups noted the social issues around pregnant women consuming alcohol …


Dementia And Driving: An Approach For General Practice, John Carmody, Victoria Traynor, Donald C. Iverson Jan 2012

Dementia And Driving: An Approach For General Practice, John Carmody, Victoria Traynor, Donald C. Iverson

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background As our population ages, the proportion of drivers with dementia will continue to rise. Increasingly, health professionals are faced with the clinical dilemma of determining fitness to drive. Unfortunately, the management of drivers with dementia is fraught with hazards.

Objective This article attempts to provide an overview of the complex issue of driving and dementia as it relates to general practitioners in Australia. In addition, an evidence based management strategy is proposed.

Discussion When determining an individual’s fitness to drive, a clinician’s input may have legal, ethical, emotional and social ramifications. At present, a clear consistent national protocol detailing …


Deviance And Diversity In Dietetics, Peter Williams Jan 2012

Deviance And Diversity In Dietetics, Peter Williams

Faculty of Health and Behavioural Sciences - Papers (Archive)

Like all professions, dietetics is concerned with the definition, teaching and assessment of professional behaviour (Gingras, 2009; Arnold, 2002), and while diversity may be welcomed, there are limits to what is regarded as acceptable differences in professional practice. There is a dark side: when difference becomes deviance. The deviance of health professionals may seem particularly damaging, because their clients hold them in positions of trust and tend to be unable to question the professional’s judgement (Gauthier, 2001). A dietitian promising to cure cancer with vitamin supplements would be regarded as deviating from the bounds of professionally acceptable behaviour.


Comorbid Externalising Behaviour In Ad/Hd: Evidence For A Distinct Pathological Entity In Adolescence, Sharnel Perera, David Crewther, Rodney Croft, Hannah Keage, Daniel Hermens, C Richard Clark Jan 2012

Comorbid Externalising Behaviour In Ad/Hd: Evidence For A Distinct Pathological Entity In Adolescence, Sharnel Perera, David Crewther, Rodney Croft, Hannah Keage, Daniel Hermens, C Richard Clark

Faculty of Health and Behavioural Sciences - Papers (Archive)

While the profiling of subtypes of Attention Deficit Hyperactivity Disorder (AD/HD) have been the subject of considerable scrutiny, both psychometrically and psychophysiologically, little attention has been paid to the effect of diagnoses comorbid with AD/HD on such profiles. This is despite the greater than 80% prevalence of comorbidity under the DSM-IV-TR diagnostic definitions. Here we investigate the event related potential (ERP) and psychometric profiles of Controls, AD/HD, and comorbid AD/HD (particularly AD/HD+ODD/CD) groups on six neurocognitive tasks thought to probe the constructs of selective and sustained attention, response inhibition and executive function. Data from 29 parameters extracted from a child …


Translation Of Tobacco Policy Into Practice In Disadvantaged And Marginalized Subpopulations: A Study Of Challenges And Opportunities In Remote Australian Indigenous Communities, Jan A. Robertson, Katherine M. Conigrave, Rowena Ivers, Kim Usher, Alan R. Clough Jan 2012

Translation Of Tobacco Policy Into Practice In Disadvantaged And Marginalized Subpopulations: A Study Of Challenges And Opportunities In Remote Australian Indigenous Communities, Jan A. Robertson, Katherine M. Conigrave, Rowena Ivers, Kim Usher, Alan R. Clough

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background: In Australia generally, smoking prevalence more than halved after 1980 and recently commenced to decline among Australia's disadvantaged Indigenous peoples. However, in some remote Indigenous Australian communities in the Northern Territory (NT), extremely high rates of up to 83% have not changed over the past 25 years. The World Health Organisation has called for public health and political leadership to address a global tobacco epidemic. For Indigenous Australians, unprecedented policies aim to overcome disadvantage and close the 'health gap' with reducing tobacco use the top priority. This study identifies challenges and opportunities to implementing these important new tobacco initiatives …


How Are Women's Glass Ceiling Beliefs Related To Career Success?, Paul Smith, Peter Caputi, Nadia Crittenden Jan 2012

How Are Women's Glass Ceiling Beliefs Related To Career Success?, Paul Smith, Peter Caputi, Nadia Crittenden

Faculty of Health and Behavioural Sciences - Papers (Archive)

Purpose – The purpose of this study is to test the concurrent criterion validity of a new measure, the Career Pathways Survey (CPS) by exploring how women’s glass ceiling beliefs are related to five major indicators of subjective career success: career satisfaction, happiness, psychological wellbeing, physical health and work engagement (WE). Design/methodology/approach – Data from a cross-sectional study of 258 women working in Australian organizations were analyzed. The participants completed the CPS and measures of subjective career success. The CPS assesses four sets of beliefs about glass ceilings: denial, resilience, acceptance and resignation. Findings – Regression analyses showed denial was …


Validation Of The Differentiated Transformational Leadership Inventory As A Measure Of Coach Leadership In Youth Soccer, Stewart A. Vella, Lindsay G. Oades, Trevor P. Crowe Jan 2012

Validation Of The Differentiated Transformational Leadership Inventory As A Measure Of Coach Leadership In Youth Soccer, Stewart A. Vella, Lindsay G. Oades, Trevor P. Crowe

Faculty of Health and Behavioural Sciences - Papers (Archive)

This paper describes the validation of The Differentiated Transformational Leadership Inventory (DTLI) within a participation youth sports context. Three hundred and twenty-two athletes aged between 11 and 18 years completed the DTLI. Using a confirmatory factor analysis, the DTLI yielded an underlying factor structure that fell short of cut-off criteria for adjudging model fit. Subsequent theory-driven changes were made to the DTLI by removing the 'high performance expectations' subscale. Further data-driven changes were also made on the basis of high item-factor cross-loadings. The revised version of the DTLI was subjected to confirmatory factor analysis and proved to be a good …


Simulation In Dietetic Education In Australia, Peter Williams, Eleanor Beck Jan 2012

Simulation In Dietetic Education In Australia, Peter Williams, Eleanor Beck

Faculty of Health and Behavioural Sciences - Papers (Archive)

In 2011 the Dietitians Association of Australia conducted a survey of simulated learning experiences in all universities offering dietetic course in Australia. A total of 35 SLEs currently used were identified: 14 paper-based, 15 physical-based and 6 computer or video based.


Branded Food References In Children's Magazines: 'Advertisements' Are The Tip Of The Iceberg, Sandra C. Jones, Parri Gregory, Lisa K. Kervin Jan 2012

Branded Food References In Children's Magazines: 'Advertisements' Are The Tip Of The Iceberg, Sandra C. Jones, Parri Gregory, Lisa K. Kervin

Faculty of Health and Behavioural Sciences - Papers (Archive)

Objective: While children's magazines 'blur the lines' between editorial content and advertising, this medium has escaped the calls for government restrictions that are currently associated with food advertisements aired during children's television programming. The aim of this study was to address significant gaps in the evidence base in relation to commercial food messages in children's magazines by systematically investigating the nature and extent of food advertising and promotions over a 12-month period. Method: All issues of Australian children's magazines published in the calendar year 2009 were examined for references to foods or beverages. Results: Approximately 16% of the 1678 food …


Nutrition Status Of Primary Care Patients With Depression And Anxiety, Adrienne K. Forsyth, Peter G. Williams, Frank P. Deane Jan 2012

Nutrition Status Of Primary Care Patients With Depression And Anxiety, Adrienne K. Forsyth, Peter G. Williams, Frank P. Deane

Faculty of Health and Behavioural Sciences - Papers (Archive)

The objective of this study was to evaluate the nutrition status of people referred to a nutrition and physical activity program for the management of mental health in a general practice.


A Comparison Of Treatment Outcomes For Individuals With Substance Use Disorder Alone And Individuals With Probable Dual Diagnosis, Elizabeth K. Cridland, Frank P. Deane, Ching-I Hsu, Peter J. Kelly Jan 2012

A Comparison Of Treatment Outcomes For Individuals With Substance Use Disorder Alone And Individuals With Probable Dual Diagnosis, Elizabeth K. Cridland, Frank P. Deane, Ching-I Hsu, Peter J. Kelly

Faculty of Health and Behavioural Sciences - Papers (Archive)

The co-occurrence of substance use and mental health problems, often referred to as dual diagnosis (DD), is increasingly recognised as commonplace within substance abuse treatment programs. Two-hundred and thirty-four individuals from 9 Australian Salvation Army drug and alcohol rehabilitation programs completed a 3-month post-discharge telephone follow-up. Using a cut-off score from the Psychiatric Subscale of the Addiction Severity Index (5th ed.), 66.7% were classified as likely to have DD and 33.3% as substance use disorder only (SUD). Both groups reported comparable and decreased substance use levels at follow-up, yet DD individuals perceived less improvement in substance use problems. Comparable improvements …


Influence Of Head Orientation And Viewpoint Oscillation On Linear Vection, Pearl S. Guterman, Robert S. Allison, Stephen Palmisano, James E. Zacher Jan 2012

Influence Of Head Orientation And Viewpoint Oscillation On Linear Vection, Pearl S. Guterman, Robert S. Allison, Stephen Palmisano, James E. Zacher

Faculty of Health and Behavioural Sciences - Papers (Archive)

Sensory conRict !.heories predict thai adding simulatcd viewpoint oscillUlion to sclf-motion displays should generate significant and sustained visual-vestibul ar conniet and reduce !.he likelihood of itlusory self· motion (vccl ion). However. research sh.ows th.at viewpoinl oscillation enhances vectioil in uprigh.t observers. This study examined whclh.cr the oscil lation advantage for veclion depends on head orientalion with respect to gravily. Displays that simulated forwardlbackward self-motion wi th/Without horizontal and vertical viewpoint oscillation were presented to observers in uprigh.t (sealed and standing) and lying (supine. prone. and len side down) body postures. Viewpoint oscillation was found to enhance vection for 0111 oflhe …


Perceived Display Speed Helps Account For The 'Jitter Advantage' In Vection, D Apthorp, S Palmisano Jan 2012

Perceived Display Speed Helps Account For The 'Jitter Advantage' In Vection, D Apthorp, S Palmisano

Faculty of Health and Behavioural Sciences - Papers (Archive)

Illusions of self-motion in depth ('vection') are strongly enhanced when coherent viewpoint oscillation or jitter is added to the inducing optic flow displays (Palmisano et al, 2010 Perception2957-67). The underlying cause of this "jitter advantage" is still unknown. Here we investigate the possibility that perceived speed plays a role, since other manipulations that increase perceived speed (adding stereo, using contracting rather than expanding flow) also increase vection in depth, and reducing perceived speed reduces vection. First, in a 2AFC procedure, we measured PSEs for smooth and vertically oscillating motion-in-depth displays; oscillating displays were uniformly perceived as faster. Then we used …


Directionless Vection: A New Illusory Self-Motion Perception, Takeharu Seno, Y Yamada, Stephen A. Palmisano Jan 2012

Directionless Vection: A New Illusory Self-Motion Perception, Takeharu Seno, Y Yamada, Stephen A. Palmisano

Faculty of Health and Behavioural Sciences - Papers (Archive)

We report a new visual illusion, "directionless vection." When expanding and contracting optic flows are simultaneously presented in the same depth plane, observers can perceive illusory self-motion (vection) without direction