Overview
Background
Professor Nadeeka Dissanayaka is a UQ Amplify Professorial Research Fellow. She is founder and director of the Dementia & Neuro Mental Health Research Unit at the University of Queensland Centre for Clinical Research. She is also the director of the UQ Dementia Friendly University Initiative. Her expertise include multidisciplinary areas ranging from basic science (eg: pharmacology, genetics, cognitive neuroscience, neuroimaging) to clinical science and medicine (eg: psychology, psychiatry, neurology, clinical trials and implementation science).
Ageing, Mental Health, and Neurodegenerative diseases such as Dementia and Parkinson's disease are key areas of Prof. Dissanayaka's research. Her primary research themes include:
1. Evaluation and Treatment of Behavioural and Psychological Symptoms in Dementia (BPSD), with a special focus on anxiety and depression.
2. Development of a Mental Health Benchmarking Industry Specific Tool for Residential Aged Care (MHICare Project)
3. Pychotherapeutic Interventions including artificial intelligence, virtual reality and telehealth guided by biofeedback systems for persons with cognitive impairment and Parkinson's disease
4. Neuropsychiatric Manifestations in Parkinson's disease including anxiety, depression, cognitive dysfunction, sleep and impulse control disorders.
5. Neurobiological Underpinnings of Cognitive and Emotional Impairment in Dementia and Parkinson's disease (neuroimaging studies) and drug repurposing.
Availability
- Professor Nadeeka Dissanayaka is:
- Available for supervision
- Media expert
Fields of research
Qualifications
- Bachelor (Honours) of Science (Advanced), The University of Queensland
- Doctor of Philosophy, The University of Queensland
Research interests
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New diagnostic methods to identify anxiety in dementia and Parkinson's disease
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Neuroimaging (EEG and fMRI) and psychophysiological markers
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New psychological treatments using innovative technologies such as telehealth, virtual reality and mobile phones
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Novel psychosocial interventions in residential aged care facilities
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Adverse effects of pharmacological treatment including prescription of psychotropic medication in elderly
Research impacts
Research: Professor Dissanayaka's research is delivering measurable improvements in the diagnosis, treatment, and management of cognitive and emotional health conditions in older adults. Through nationally funded research programs, she is addressing critical gaps in the early detection of dementia in Parkinson's disease and expanding access to evidence-based psychological therapies through innovative digital and technology-assisted approaches.
Her research has led to the development of novel clinical tools, including the Parkinson's Disease-Specific Anxiety Inventory (PDSAI), which supports the identification and management of anxiety in Parkinson's disease. She has also developed and evaluated new psychotherapeutic interventions and technology-enabled models of care that improve mental wellbeing, independence, and quality of life for people living with dementia and Parkinson's disease.
By working closely with consumers, health services, aged care providers, and industry partners, Professor Dissanayaka ensures that research findings are translated into practical solutions that strengthen clinical practice, enhance aged care services, and support better outcomes for patients and families. Her programs have secured substantial competitive funding (including NHMRC and MRFF grants) and continue to drive innovation in digital health, virtual reality, telehealth, and mental health care for ageing populations. Her contributions have been recognised through numerous prestigious awards for research excellence, leadership, and research training.
Training: Professor Dissanayaka has made a significant contribution to research capacity building through the supervision and mentorship of students, trainees, and early and mid- career researchers across psychology, medicine, public health, pharmacy, and biomedical sciences. Through her commitment to interdisciplinary training and research excellence, she is helping to develop the next generation of clinician-scientists, healthcare professionals, and research leaders.
Community: As a strong advocate for research translation, Professor Dissanayaka's work has influenced the development of new diagnostic pathways, psychotherapeutic interventions, and technology-enabled models of care that support patients, families, clinicians, and aged care providers. Her research informs clinical practice, health service innovation, and policy development, contributing to better mental health, cognitive health, and quality of life for older people. Through strategic partnerships and research translation initiatives, Professor Dissanayaka is advancing evidence-based innovations that influence clinical practice, healthcare policy, and service delivery, generating meaningful benefits for ageing populations, healthcare systems, and communities worldwide.
Works
Search Professor Nadeeka Dissanayaka’s works on UQ eSpace
2011
Conference Publication
Assessment methods and factors associated with depression in Parkinson's disease
Dissanayaka, Nadeeka N., O'Sullivan, John D., Silburn, Peter A. and Mellick, George D. (2011). Assessment methods and factors associated with depression in Parkinson's disease. 7th International Congress on Mental Dysfunction and other Non-Motor Features in Parkinsons Disease and Related Disorders, Barcelona, Spain, 9-12 December 2010. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.jns.2011.06.031
2011
Conference Publication
Abnormal event related brain potentials generated while processing emotional information in anxious Parkinson’s disease patients
Dissanayaka, N., Angwin A., Copland, D., O’Sullivan, J., Byrne, G., Marsh, M., Mellick, G. and Silburn, P. (2011). Abnormal event related brain potentials generated while processing emotional information in anxious Parkinson’s disease patients. The Biannual Movement Disorder Society of Australia Conference, Melbourne, Australia, 8-10 September 2011.
2011
Conference Publication
Abnormal event related brain potentials generated while processing emotional information in anxious Parkinson’s disease patients
Dissanayaka, Nadeeka, Au, Tiffany, Angwin, Anthony, Copland, David, O’Sullivan, John, Byrne, Gerard, Marsh, Rodney, Mellick, George and Silburn, Peter (2011). Abnormal event related brain potentials generated while processing emotional information in anxious Parkinson’s disease patients. 2nd Australasian Cognitive Neuroscience Conference, Sydney, Australia, 9-12 December 2011.
2011
Conference Publication
Abnormal event related brain potentials generated while processing emotional information in anxious Parkinson’s disease patients
Dissanayaka, N., Angwin, A., Copland, D., O’Sullivan, J., Byrne, G., Marsh, R., Mellick, G. and Silburn, P. (2011). Abnormal event related brain potentials generated while processing emotional information in anxious Parkinson’s disease patients. 20th RBWH Healthcare Symposium, Brisbane, Australia, 10-14 October 2011.
2010
Journal Article
Anxiety Disorders in Parkinson's Disease: Prevalence and Risk Factors
Dissanayaka, Nadeeka N. W., Sellbach, Anna, Matheson, Sally, O'Sullivan, John D., Silburn, Peter A., Byrne, Gerard J., Marsh, Rodney and Mellick, George D. (2010). Anxiety Disorders in Parkinson's Disease: Prevalence and Risk Factors. Movement Disorders, 25 (7), 838-845. doi: 10.1002/mds.22833
2010
Other Outputs
Anxiety and depression in Parkinson's disease
Dissanayaka, N. (2010). Anxiety and depression in Parkinson's disease. Springwood, QLD, Australia: Parkinson’s Queensland .
2010
Conference Publication
Factors associated with freezing of gait in Parkinson’s disease
Dissanayaka, N., O’Sullivan, J., Silburn, P. and Mellick, G. (2010). Factors associated with freezing of gait in Parkinson’s disease. 19th Annual RBWH Health Care Symposium, Brisbane, Australia, 11-15 October 2010.
2010
Other Outputs
Anxiety and depression in parkinson’s disease
Dissanayaka, N. (2010). Anxiety and depression in parkinson’s disease. Herston, QLD, Australia:
2010
Conference Publication
Risk factors for depression in Parkinson’s disease
Dissanayaka, N. N., O’Sullivan, J. D., Silburn, P. A. and Mellick, G. D. (2010). Risk factors for depression in Parkinson’s disease. 7th International Congress on Mental Dysfunctions and Other Non-motor Features in Parkinson’s Disease and Related Disorders, Barcelona, Spain, 9-12 December 2010.
2010
Newspaper Article
Ex-Wallaby to Tackle Illness
Dissanayaka, N. (2010, 01 01). Ex-Wallaby to Tackle Illness Courier Mail
2009
Journal Article
Validity of a self-rated method to identify a lifetime history of depression in Parkinson's disease
Dissanayaka, Nadeeka N. W., Sellebach, Annabelle N., Matheson, Sally, Marsh, Rodney, O'Sullivan, John D., Silburn, Peter A., Byrne, Gerard J. and Mellick, George D. (2009). Validity of a self-rated method to identify a lifetime history of depression in Parkinson's disease. Movement Disorders, 24 (16), 2435-2438. doi: 10.1002/mds.22819
2009
Journal Article
Serotonin and dopamine transporter genes do not influence depression in Parkinson's disease
Dissanayaka, Nadeeka N. W., Silburn, Peter A., O'Sullivan, John D. and Mellick, George D. (2009). Serotonin and dopamine transporter genes do not influence depression in Parkinson's disease. Movement Disorders, 24 (1), 111-115. doi: 10.1002/mds.22134
2009
Conference Publication
A probabilistic approach for patient classification in Parkinson’s disease
White, N. M., Johnson, H. L., Mengersen, K. L., Mellick, G. D., Dissanayaka, N. and Silburn, P. A. (2009). A probabilistic approach for patient classification in Parkinson’s disease. MDS 13th International Congress: The Movement Disorder Society’s 13th International Congress of Parkinson’s Disease and Movement Disorder, Paris, France, 7-11 June 2009. Hoboken, NJ, United States: John Wiley & Sons. doi: 10.1002/mds.22628
2009
Conference Publication
Risk factors for depression in Parkinson’s disease
Dissanayaka, N., Sellbach, A., Matheson, S., O'Sullivan, J., Silburn, P. A., Marsh, R., Byrne, G. and Mellick, G. (2009). Risk factors for depression in Parkinson’s disease. 18th Annual RBWH Health Care Symposium, Brisbane, Australia, October 2009.
2009
Conference Publication
Risk factors for depression in Parkinson’s disease
Dissanayaka, N. N., Sellbach, A., Matheson, S., Marsh, R., Silburn, P. A., O'Sullivan, J. D., Byrne, G. J. and Mellick, G. D. (2009). Risk factors for depression in Parkinson’s disease. 1st Joint Conference of the APS Psychology and Ageing Interest Group, and the Royal Australian and New Zealand College of Psychiatrists Faculty of Psychiatry of Old Age, Gold Coast, Australia, 12-14 November 2009.
2009
Conference Publication
Assessing depression in Parkinson’s disease
Dissanayaka, N. N. W., Sellbach, A., Matheson, S., Marsh, R., Silburn, P. A., O'Sullivan, J. D., Byrne, G. J. and Mellick, G. D. (2009). Assessing depression in Parkinson’s disease. 5th National Conference on Depression in Elderly., Sydney, Australia, 2009.
2009
Conference Publication
What contributes to depression in Parkinson’s disease?
Dissanayaka, N. N. W., Silburn, P. A., O’Sullivan, J. D. and Mellick, J. D. (2009). What contributes to depression in Parkinson’s disease?. Australian Society for Medical Research Queensland Postgraduate Student Conference, Brisbane, Australia, 26 May 2009.
2008
Other Outputs
Depression in Parkinson's disease : assessment methods and risk factors
Dissanayaka, Nadeeka (2008). Depression in Parkinson's disease : assessment methods and risk factors. PhD Thesis, School of Medicine, The University of Queensland. doi: 10.14264/159583
2008
Conference Publication
Is depression in Parkinson’s disease ‘organic’ or ‘reactive’
Dissanayaka, N., Silburn, P., O’Sullivan, J. and Mellick, G. (2008). Is depression in Parkinson’s disease ‘organic’ or ‘reactive’. Australian Society for Medical Research Queensland Postgraduate Student Conference, Brisbane, Australia, 29 May 2008.
2008
Conference Publication
Risk factors for depression in Parkinson’s disease
Dissanayaka, N., O’Sullivan, J., Silburn, P. and Mellick, G. (2008). Risk factors for depression in Parkinson’s disease. 6th International Congress on Mental Dysfunctions and Other Non-motor Features in Parkinson’s Disease, Dresden, Germany, 16-19 October 2008.
Funding
Current funding
Supervision
Availability
- Professor Nadeeka Dissanayaka is:
- Available for supervision
Looking for a supervisor? Read our advice on how to choose a supervisor.
Available projects
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1. PhD Scholarship available: Understanding the barriers and facilitators of delivering a technology-assisted telehealth psychotherapy intervention to people with dementia
As part of the study, we will undertake a process evaluation to assess treatment fidelity, dose and contextual factors that may influence effectiveness, to inform future implementation in community and memory clinic settings. The PhD project will focus on developing the future implementation framework for Tech-CBT. This project would suit someone with a background in psychology or health sciences.
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2. Neurobiology of Anxiety in Older Persons: fMRI study
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3. Virtual Reality based Psychological Interventions for Parkinson's disease and Dementia
Supervision history
Current supervision
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Doctor Philosophy
Business models and implementation roadmap for rapid translation of PDCogniCare Intervention into healthcare
Principal Advisor
Other advisors: Professor Martie-Louise Verreynne, Associate Professor Sam MacAulay
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Doctor Philosophy
Development and implementation of a standardised toolkit to improve evaluation of cognitive impairment in Parkinsons disease
Principal Advisor
Other advisors: Dr Leander Mitchell, Dr Deborah Brooks
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Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Principal Advisor
Other advisors: Dr Peter Worthy
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Doctor Philosophy
Technology-assisted telehealth psychotherapy intervention for people with dementia
Principal Advisor
Other advisors: Dr Leander Mitchell, Dr Deborah Brooks
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Doctor Philosophy
Assistive technologies for integrated cognitive and motor rehabilitation of stroke survivors in India
Associate Advisor
Other advisors: Associate Professor Devi Mohan
Completed supervision
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2024
Doctor Philosophy
Development and feasibility evaluation of a psychotherapy intervention for anxiety in persons living with cognitive impairment delivered via videoconferencing
Principal Advisor
Other advisors: Associate Professor Jacki Liddle, Dr Leander Mitchell
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2023
Doctor Philosophy
Cognitive subtypes in Parkinson's disease: exploring phenotypes, neuroimaging targets, and therapeutics
Principal Advisor
Other advisors: Associate Professor John O'Sullivan, Dr Ji Hyun Julia Yang
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2023
Doctor Philosophy
Towards Better Mental Health Care: Management of Behavioural and Psychological Symptoms within Residential Aged Care Facilities
Principal Advisor
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2020
Doctor Philosophy
Markers and Mechanisms of Mild Cognitive Impairment in Parkinson's disease
Principal Advisor
Other advisors: Professor David Copland
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2026
Doctor Philosophy
Dopamine and new word learning
Associate Advisor
Other advisors: Professor David Copland, Associate Professor Anthony Angwin
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2025
Doctor Philosophy
DEVELOPMENT OF A PICTURE-BASED QUALITY-OF-LIFE ASSESSMENT TOOL FOR PEOPLE LIVING WITH DEMENTIA
Associate Advisor
Other advisors: Associate Professor Anthony Angwin
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2025
Doctor Philosophy
Physiologic Signal Correlates of Vigilance Related Cognitive Decline in Patients with Obstructive Sleep Apnoea
Associate Advisor
Other advisors: Hon Assoc Professor Udantha Abeyratne
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2019
Doctor Philosophy
Twillight or dimlight? Attitudes towards residential aged care and implementation of an learning integrated intervention designed to shift attitudes.
Associate Advisor
Other advisors: Associate Professor Theresa Scott, Professor Nancy Pachana
Media
Enquiries
Contact Professor Nadeeka Dissanayaka directly for media enquiries about:
- Anxiety
- Cognitive Behaviour Therapy
- Dementia
- Depression
- Mindfulness
- Parkinson's diisease
- Psychotropic Prescriptions
- Residential Aged Care
- Virtual Reality
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