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
2025
Conference Publication
Developing Recommendations for Best Practice Guidelines for Cognitive Evaluation in Parkinson’s Disease: Insights from Lived Experience Experts
Sriram, Deepa, Pourzinal, Dana, Bailey, Daniel X., Brooks, Deborah, McCann, Emily and Dissanayaka, Nadeeka (2025). Developing Recommendations for Best Practice Guidelines for Cognitive Evaluation in Parkinson’s Disease: Insights from Lived Experience Experts. International Neuropsychological Society and the Australasian Society for the Study of Brain Impairment 7th Pacific Rim Conference, Brisbane, QLD Australia, 2-5 July 2025.
2025
Conference Publication
Harmonising neuropsychological assessments to identify cognitive impairment in Parkinson's disease: A systematic review and critique
McCann, Emily, Pourzinal, Dana, Brooks, Deborah, Sriram, Deepa, Mitchell, Leander K., Pachana, Nancy A., King, James and Dissanayaka, Nadeeka (2025). Harmonising neuropsychological assessments to identify cognitive impairment in Parkinson's disease: A systematic review and critique. 7th Pacific Rim Conference, Brisbane, QLD Australia, 2-5 July 2025.
2025
Journal Article
Diagnosis, evaluation, and management of cognitive disorders in Parkinson's disease: consensus recommendations from a modified Delphi process
Pourzinal, Dana, Brooks, Deborah, Sriram, Deepa, Mitchell, Leander K., Pachana, Nancy A., Shrubsole, Kirstine, Wood, Brian, O'Sullivan, John D., Marsh, Rodney, Lehn, Alexander, Liddle, Jacki, Tan, Edwin C. K., Halford, W. Kim, Page, Neil and Dissanayaka, Nadeeka N. (2025). Diagnosis, evaluation, and management of cognitive disorders in Parkinson's disease: consensus recommendations from a modified Delphi process. Alzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring, 17 (3) e70152, 1-13. doi: 10.1002/dad2.70152
2025
Journal Article
Diagnosis, evaluation and management of cognitive disorders in Parkinson’s disease: a systematic review
Pourzinal, Dana, Elgey, Charlotte, Bailey, Daniel X., Yang, Jihyun, Lehn, Alexander, Tinson, Helen, Liddle, Jacki, Brooks, Deborah, Naismith, Sharon L., Shrubsole, Kirstine, Marsh, Rodney, Mitchell, Leander K., Pachana, Nancy A., King, James and Dissanayaka, Nadeeka N. (2025). Diagnosis, evaluation and management of cognitive disorders in Parkinson’s disease: a systematic review. International Psychogeriatrics 100081, 1-10. doi: 10.1016/j.inpsyc.2025.100081
2025
Journal Article
Psychological distress and productivity loss: a longitudinal analysis of Australian working adults
Keramat, Syed Afroz, Comans, Tracy, Pearce, Alison, Basri, Rabeya, Hashmi, Rubayyat and Dissanayaka, Nadeeka N. (2025). Psychological distress and productivity loss: a longitudinal analysis of Australian working adults. The European Journal of Health Economics, 26 (8), 1-22. doi: 10.1007/s10198-025-01764-9
2025
Journal Article
Deterioration of health-related quality of life: the hidden health burden of informal caregiving
Keramat, Syed Afroz, Sarker, Prianka Maria, Comans, Tracy, Brooks, Deborah and Dissanayaka, Nadeeka N. (2025). Deterioration of health-related quality of life: the hidden health burden of informal caregiving. The European Journal of Health Economics, 26 (8), 1-24. doi: 10.1007/s10198-025-01776-5
2025
Journal Article
"We have a behaviour support plan, let's have a mental health support plan": Perspectives of staff, residents and family carers on understanding, responding to and promoting the mental health of residents within long-term care
Brooks, Deborah, Sriram, Deepa, Burley, Claire V., Brimelow, Rachel and Dissanayaka, Nadeeka N. (2025). "We have a behaviour support plan, let's have a mental health support plan": Perspectives of staff, residents and family carers on understanding, responding to and promoting the mental health of residents within long-term care. Dementia, 25 (3) 14713012251334170, 1-19. doi: 10.1177/14713012251334170
2025
Journal Article
Development and validation of the Parkinson’s Disease Specific Anxiety Inventory (PDSAI)
Dissanayaka, Nadeeka N., Pourzinal, Dana, Byrne, Gerard, Pachana, Nancy A., O’Sullivan, John D., White, Elizabeth, Au, Tiffany, Yang, Jihyun, Interian, Alejandro, Rodriguez, Kailyn and Dobkin, Roseanne D. (2025). Development and validation of the Parkinson’s Disease Specific Anxiety Inventory (PDSAI). Journal of Geriatric Psychiatry and Neurology, 38 (5), 353-361. doi: 10.1177/08919887251332660
2025
Journal Article
Pilot implementation of an electronic diagnostic support tool (AiD‐DST) designed to identify the cause(s) of delirium
Leong, Elizabeth, Chang, Stephane, Yearwood, Kristi, Eeles, Eamonn, Yerkovich, Stephanie, Ling, Carolina, Teodorczuk, Andrew and Dissanayaka, Nadeeka (2025). Pilot implementation of an electronic diagnostic support tool (AiD‐DST) designed to identify the cause(s) of delirium. Australasian Journal on Ageing, 44 (1) e70000, 1-7. doi: 10.1111/ajag.70000
2025
Journal Article
The estimation of health state utility values for psychological distress in Australia: implications for future economic evaluations
Keramat, Syed Afroz, Comans, Tracy, Basri, Rabeya, Bailey, Daniel, Brooks, Deborah and Dissanayaka, Nadeeka N. (2025). The estimation of health state utility values for psychological distress in Australia: implications for future economic evaluations. Value in Health, 28 (3), 368-378. doi: 10.1016/j.jval.2024.12.002
2025
Journal Article
Telehealth cognitive behavior therapy to reduce anxiety in people living with cognitive impairment: a randomized feasibility pilot study
Pacas Fronza, Gabriela, Mitchell, Leander K., Pachana, Nancy A., Byrne, Gerard J., Liddle, Jacki, Yang, Jihyun, Brooks, Deborah, Au, Tiffany, Pourzinal, Dana, Worthy, Peter, Comans, Tracy, Beattie, Elizabeth, Bennett, Sally, Russell, Trevor and Dissanayaka, Nadeeka N. (2025). Telehealth cognitive behavior therapy to reduce anxiety in people living with cognitive impairment: a randomized feasibility pilot study. Clinical Gerontologist, 48 (4), 684-698. doi: 10.1080/07317115.2024.2336187
2024
Journal Article
Interhemispheric asynchrony of NREM EEG at the beginning and end of sleep describes evening vigilance performance in patients undergoing diagnostic polysomnography
McCloy, Karen, Duce, Brett, Dissanayaka, Nadeeka, Hukins, Craig and Abeyratne, Udantha (2024). Interhemispheric asynchrony of NREM EEG at the beginning and end of sleep describes evening vigilance performance in patients undergoing diagnostic polysomnography. Physiological Measurement, 45 (11) 115002, 1-17. doi: 10.1088/1361-6579/ad8f8f
2024
Journal Article
Capturing the ghost in the machine: a process for development and validation of measures of phenomenal consciousness in delirium
Eeles, Eamonn, Tran, David Duc, Ward, Sarah, Teodorczuk, Andrew, Ray, Julian, Miller, Tim and Dissanayaka, Nadeeka N. (2024). Capturing the ghost in the machine: a process for development and validation of measures of phenomenal consciousness in delirium. Age and Ageing, 53 (7) afae144. doi: 10.1093/ageing/afae144
2024
Journal Article
Profiling people with Parkinson's disease at risk of cognitive decline: Insights from PPMI and ICICLE‐PD data
Pourzinal, Dana, Lawson, Rachael A., Yarnall, Alison J., Williams‐Gray, Caroline H., Barker, Roger A., Yang, Jihyun, McMahon, Katie L., O'Sullivan, John D., Byrne, Gerard J. and Dissanayaka, Nadeeka N. (2024). Profiling people with Parkinson's disease at risk of cognitive decline: Insights from PPMI and ICICLE‐PD data. Alzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring, 16 (3) e12625, 1-11. doi: 10.1002/dad2.12625
2024
Conference Publication
Enhancing utility of neuropsychological evaluation for earlier and effective diagnosis of dementia in Parkinson’s disease: PDCogniCare project
Au, T., Bailey, D., Beattie, E., Brooks, D., Broome, A., Byrne, G., Chatfield, M., Dissanayaka, N., Keramat, S.A., Lehn, A., Liddle, J., Marsh, R., Mitchell, L., Naismith, S., Nestor, S., O’Sullivan, J., Pachana, N., Pourzinal, D., Robertson, S., Shrubsole, K., Sivakumaran, K., Spooner, D., Tinson, H., Verreynne, M.L., Worthy, P. and Yang, J. (2024). Enhancing utility of neuropsychological evaluation for earlier and effective diagnosis of dementia in Parkinson’s disease: PDCogniCare project. Australian Dementia Research Forum 2024, Gold Coast, QLD Australia, 3-5 June 2024.
2024
Conference Publication
Neuropsychological predictors of cognitive decline in Parkinson's disease: A systematic review (PDCogniCare)
Pourzinal, D., Sivakumaran, K., Yang, J., Bailey, D.X., Mitchell, L.K., Brooks, D. and Dissanayaka, N. (2024). Neuropsychological predictors of cognitive decline in Parkinson's disease: A systematic review (PDCogniCare). Australian Dementia Research Forum 2024, Gold Coast, QLD Australia, 3-5 June 2024.
2024
Conference Publication
Barriers and facilitators of cognitive behavioural therapy interventions for people living with mild cognitive impairment or dementia: a systematic review
Welsh, K., Brooks, D., Mitchell, L. and Dissanayaka, N. (2024). Barriers and facilitators of cognitive behavioural therapy interventions for people living with mild cognitive impairment or dementia: a systematic review. Australian Dementia Research Forum 2024, Gold Coast, QLD Australia, 3-5 June 2024.
2024
Conference Publication
Barriers and enablers to cognitive assessment in Parkinson’s disease: perspectives of clinicians and people living with PD
Brooks, D., Worthy, P., Shrubsole, K. and Dissanayaka, N. (2024). Barriers and enablers to cognitive assessment in Parkinson’s disease: perspectives of clinicians and people living with PD. Australian Dementia Research Forum 2024, Gold Coast, QLD Australia, 3-5 June 2024.
2024
Conference Publication
Technology assisted and remotely delivered anxiety psychotherapy intervention for people living with dementia and their care partners: Tech-CBT project
Au, T., Beattie, E., Bennett, S., Brooks, D., Broome, A., Byrne, G., Chatfield, M., Comans, T., Dissanayaka, N., Guy, R., Keramat, S.A., King, T., Lehn, A., Liddle, J., Mitchell, L., Oram, J., O’Sullivan, J., Pacas Fronza, G., Pachana, N., Pietsch, A., Tan, J., Welsh, K. and Worthy, P. (2024). Technology assisted and remotely delivered anxiety psychotherapy intervention for people living with dementia and their care partners: Tech-CBT project. Australian Dementia Research Forum 2024, Gold Coast, QLD Australia, 3-5 June 2024.
2024
Journal Article
Hippocampal resting‐state connectivity is associated with posterior‐cortical cognitive impairment in Parkinson's disease
Pourzinal, Dana, Yang, Jihyun, McMahon, Katie L., Copland, David A., Mitchell, Leander, O'Sullivan, John D., Byrne, Gerard J. and Dissanayaka, Nadeeka N. (2024). Hippocampal resting‐state connectivity is associated with posterior‐cortical cognitive impairment in Parkinson's disease. Brain and Behavior, 14 (3) e3454, 1-12. doi: 10.1002/brb3.3454
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
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
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
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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