Research
Perception
Interpreting the world through our five senses
Perception refers to the way the brain takes raw information received by our senses and interprets it in a meaningful way. At UWA, we study the ability to detect, attend to and recognise features in the environment, and seek to understand the underlying processes that serve those abilities.
Perceptual processes studied by our research group cover a range of static and dynamic visual forms and objects, including faces. We also seek to understand how perceptual processes differ across individuals, such as those with autism, migraines or eating disorders.
Research laboratories
Researchers in perception work across the following laboratories:
- Attention and Human Behaviour Laboratory
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Our research is at the interface between key human cognitive abilities, such as attention and multitasking, and human behaviours across a variety of situations.
Over a century of 'basic' experimental research has taught us a lot about human cognition and perception, as well as their underlying neural mechanisms. However, we know much less about how these abilities differ across individuals and groups, or how these abilities influence everyday behaviours, like driving, or performance in specialised jobs, like the military or air-traffic control.
The goal of our work is to answer these questions by breaking through traditional divides between basic and applied research, and to focus on building a reciprocal relationship in which basic research can guide practical questions, and practical outcomes can give new insights into basic processes.
Attention and Human Behaviour LaboratoryContact us
- FaceLab
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Faces convey a wealth of information that guides our social interactions. At a glance we can assess a person’s identity, gender, ethnicity, age, attractiveness, emotional state and focus of attention.
This fluency is remarkable given the difficulty of the discriminations required. We are studying the perceptual, cognitive and evolutionary mechanisms underlying this face processing expertise.
The FaceLab also hosts the Person Perception Program of the ARC Centre of Excellence in Cognition and its Disorders (CCD).
Join us
If you are interested in joining the lab or taking part in an experiment, email Libby Taylor.
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Lab director:
Academic research staff:
- Human Vision Laboratory
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Vision has a central role in our relationship with the world and the way we see determines how we are able to interact with the environment. The focus of our research is on human visual performance and has concentrated on the processes involved in extracting motion, pattern and position information.
Currently the laboratory is running long-term projects examining:
- how humans perceive both the speed and direction of the type of motion produced by moving through the environment
- the processes that allow us to determine the location of objects within the environment
- the processes that allow us to determine the large-scale structure of the visual world and also how these processes are altered in migraine, glaucoma and autism
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- Person Perception Lab
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Our research program has significantly contributed to understanding which perceptual, cognitive and neural mechanisms are crucial for person perception.
This often involves studying faces, as they provide information about the identity, age, sex, race, attractiveness and mood of other people, but also involves studying the perception of bodies and voices.
Methodologically, the lab uses a variety of psychophysical, behavioural, genetic modelling, and cognitive neuroimaging techniques.
The research is interdisciplinary, linking many aspects of psychology (e.g., social, clinical) with other disciplines such as computer science (e.g., automated recognition), law (e.g., eyewitness testimony) and neurobiology (e.g., comparative models).
Research Questions:
- Why can't some children and adult recognise facial identity?
- Can training improve person perception skills?
- How do people perceive, interpret and respond to facial expressions?
- How do people respond to virtual humans?
- How does neurodiversity or brain injury affect person perception?
- How does person perception develop throughout childhood, and across the lifespan?
- How do people form facial expressions of trustworthiness and approachability and are these first impressions primarily shaped by genes or experience?
- How can we reliably measure individual differences in face perception ability, and what is this variation in ability linked with?
- What is the role of visual attention in person perception?
Prosopagnosia Research
Interested in participating in research?
Our current understanding of prosopagnosia is only limited, and further research is needed to clarify the nature of this rare condition. If you or any of your family members are experiencing face recognition difficulties, and if you're interested in participating in research, please register with us.Australian Prosopagnosia Register
For more information about prosopagnosia and our current research see below:
Participant Information and Consent Form (PDF 68KB)
- Sensory Neuroscience Attention and Perception (SNAP) Laboratory
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Research interests within the SNAP Lab involves three distinct arms – visual perception, clinical research and sensory neuroscience. Current projects in each of these areas are described below. Enquiries about any SNAP Lab projects below should be directed to head of SNAP lab Dr Jason Bell.
Perception research
Research in this area considers how the human visual system processes shapes and objects for recognition. Recognition is accomplished through the coordinated activation of distinct brain regions. Projects seek to discover what information is represented at each stage of processing.
Current research interests include:
- Studying the role of hemispheric specialisation in the processing of symmetry.
- The time course of visual perception. How fast and for how long do discrete visual mechanisms process content?
- The properties of the mechanisms processing visual number.
- Serial dependencies in visual perception. How and when is past information used in the processing of the present?
Clinical research
Dr. Jason Bell is interested in studying abnormalities of perception within particular groups. Together with associate professors Elizabeth Rieger (ANU) and Dr Susan Byrne (UWA), they are undertaking research to understand the relationship between biases in perception and or attention, and eating disorder symptomology, or obesity.
Current research interests include:
- Attentional biases to high and low calorie foods or to particular body shapes.
- Biases in the perceived healthiness of foods, or in the perceived size of female bodies.
- Attentional retraining procedures to reduce or null maladaptive processing strategies in relation to the above visual cues.
Together with Associate Professor Carmela Pestell (UWA), they are conducting studies to better our understanding of the relationship between ADHD and altered time perception.
Current research interests include:
- studies retraining timing abilities
- studies examining the role of emotional regulation in ADHD symptomology and time perception
Sensory neuroscience
Understanding functional specialisation in the brain is a fundamental goal of neuroscience and psychology. The lab currently offers opportunities to study the effects of neurosynchronisation and of non-invasive cortical stimulation on perception and behaviour.
Current research projects and collaborations are utilising:
- Neuroscience techniques such as transcranial direct current stimulation, or tDCS to investigate the correlates of attention and perception.
- Neurosynchronisation techniques to understand the role of rhythmic brain activity in various aspects of attention, perception and action, with a focus on theta and alpha bands.
- Healthcare Human Factors Laboratory
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We conduct human factors research with a focus on healthcare settings. We apply theories and methodologies from human factors psychology to understand how healthcare professionals (e.g. doctors, nurses, hospital administrators, etc.) carry out their jobs in their work environment (e.g. operating theatres, hospital wards, etc.), and identify human-centred solutions to support/enhance their work performance. The aim is to help healthcare professionals perform to their best abilities efficiently and safely.
Our research is relevant to, and draws on knowledge from, applied cognition, perception and attention, and I/O psychology. That’s why you see our Lab spanning across more than one research area in the School. We use methodology ranging from laboratory-based experiments, clinical simulations, to observational studies.
Current interests in the lab:
- Designing tools to help clinicians multitask - Clinicians often have to multitask (e.g. calculating medication dosage for Patient A and paying attention to Patient B’s decreasing heart rate), we are interested in finding out clinicians’ performance bottleneck in such situations and design appropriate technology to help them manage their attention effectively.
- Understanding clinicians’ attention - We are interested in finding out whether clinicians from different specialisation would have different attentional capabilities. If so, what would this tell us about human attention?
- Human factors training in hospitals - Hospitals in WA have started providing human factors training to their staff (including doctors, nurses, allied health, etc.) and we are interested in finding ways to measure the impact of human factors training on work performance. In this line of work, we collaborate with Dr Thy Do, Consultant Anaesthetist, at Royal Perth Hospital and Operational Director of the NEXUS Human Factors Training Program.
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- Human Factors and Applied Cognition (HUFAC) Laboratory
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The Human Factors and Applied Cognition (HUFAC) Laboratory conducts theory-driven research to understand the cognitive mechanisms that underlie human performance in safety-critical work contexts. To achieve this we conduct both basic experimental psychology research and research using simulations of air traffic control, submarine track management, unmanned vehicle control, and driving.
The core aim is to strengthen the link between psychological science and practice by publishing in world-class journals, and transferring knowledge and skills as directly as possible back to industry.
Core questions addressed in the HUFAC Laboratory include:
- How can task automation be designed to maximise operator and system efficiency/safety?
- How do individuals remember to perform delayed intentions when multi-tasking (prospective memory), and how can the negative impact of task interruptions be minimised?
- What are the mechanisms by which individuals develop understanding the current state of their tasks and anticipate the future (situation awareness), and to what extent can this be trained?
Funding
The HUFAC Laboratory has received a significant amount of funding from bodies such as:
- Australian Research Council
- Air Services Australia
- Defence Science and Technology Group
- Defence Research and Development (Canada)
- Neurotrauma Research Program
- Department of Airforce (Asian Office of Aerospace Research and Development)
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- PECAN Lab
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In the PECAN lab, we investigate questions at the intersection of Perception, Emotion, Cognition, Ageing, and Neuroscience (PECAN). And we’re “nuts” for science!
At any given moment, the amount of information bombarding our senses is more than we can possibly process. This means that we can only pay attention to and remember small slices of our environment. How do we decide what to prioritise?
Our emotional reactions are one piece of the puzzle. We often prioritise emotionally powerful information so much that it can keep us from seeing and remembering other things (even other things that we look right at).
Age is another piece of the puzzle. As we grow older, our attention and memory processes change, as does the role of our emotions.
We use behavioural, eye tracking, and neuroscience techniques to study emotion-cognition interactions, and how these are altered by individual differences such as age.
Major research questions in our lab include:
How are emotional stimuli prioritised in our attention and memory and how does this affect our processing of other stimuli in the environment?
Are there ways to heighten or diminish emotion’s influence on cognitive processing?
What drives the age-related positivity effect, in which older adults prioritise more positive and less negative information compared to younger adults?
How do arousal and selective attention change with age and Alzheimer’s disease?
Why and how do certain individuals attend and remember certain stimuli more than others?
Do ways that we interact with information alter how we attend and remember it?
Lab director
- Learning, Individual Development, and Life (LIDL) Lab
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LIDL Lab investigates individual differences in human potential and achievement. We use behaviour, psychophysics, and neurophysiology to understand why some people are more efficient learners, and how this relates to mental health and life outcomes.
We investigation low- and high-level learning (low-level = perceptual or statistical learning, and attention; high-level = reading and academic achievement). For example, dyslexia—a specific developmental learning difficulty with reading acquisition—is linked with a different cognitive and perceptual capacities, e.g., for recognising repeated tones, as well as atypical cerebral lateralisation (e.g., the right hemisphere of the brain is more likely to be involved in language processing, whereas this is the left in most people). Dyslexia is also linked with poorer academic achievement, as well as anxiety and poorer self-esteem (i.e., social and emotional challenges).
Here are some example research questions we pursue:
- Why does attention and perception relate to reading abilities? For this we use paradigms like the attentional blink and perceptual anchoring (behavioural psychophysics)
- How does cerebral lateralisation of verbal and non-verbal information processing relate to real-world behaviours like reading and educational outcomes? For this we use EEG and functional transcranial Doppler ultrasound.
- Do mental health traits and coping-strategies influence educational engagement (e.g., university retention) for poor readers? For this we use mixed methods: surveys, behavioural tasks, and interviews.
These projects inform our theoretical understanding of how the mind and brain adapt to the environment, which in turn has implications for education and clinical practice.
The aim of LIDL Lab is to understand individual differences with the goal to improve outcomes, so we can all pursue our potential, living healthy and fulfilling lives.
Researchers in LIDL Lab can be involved in INDiKids, a research program with a central goal of understanding Individual Neurocognitive Development in Kids and how this contributes to developmental change in cognitive, socioemotional, and educational abilities. INDiKids brings together a group of researchers from the School of Psychological Science interested in the neurocognitive basis of typical development and developmental disorders. INDiKids hosts a children’s research program each year in which children attend UWA to take part in a range of research studies embedded within an action-packed day of games and activities! If you are interested in your child being involved, please contact us.
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