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
2020
Conference Publication
Identification and clinical characteristics of mild cognitive impairment in Parkinson’s disease
Yang, J.H., Forbes, E., Pourzinal, D., McMahon, K., Copland, D.A., Byrne, G.J., O'Sullivan, J., Mitchell, L. and Dissanayaka, N.N. (2020). Identification and clinical characteristics of mild cognitive impairment in Parkinson’s disease. MDS Virtual Congress 2020, Online, 12-16 September 2020.
2020
Conference Publication
Investigating resting state functional connectivity in sub-phenotypes of Mild Cognitive Impairment in Parkinson’s disease
Pourzinal, D., Yang, J.H.J., Byrne, G.J., O'Sullivan, J., Mitchell, L., McMahon, K.L., Copland, D.A. and Dissanayaka, N.N. (2020). Investigating resting state functional connectivity in sub-phenotypes of Mild Cognitive Impairment in Parkinson’s disease. 5th Annual NHMRC National Institute for Dementia Research (NNIDR) Australian Dementia Forum, Adelaide, Australia, 31 May - 2 June 2020.
2020
Conference Publication
Identification and clinical characteristics of mild cognitive impairment in Parkinson’s disease
Yang, Ji Hyun, Forbes, Elana, Pourzinal, Dana, McMahon, Katie, Copland, David, Byrne, Gerard, O'Sullivan, John, Mitchell, Leander and Dissanayaka, Nadeeka (2020). Identification and clinical characteristics of mild cognitive impairment in Parkinson’s disease. Australian Dementia Forum, Adelaide, SA, Australia, 31 May-2 June 2020. Canberra City, ACT, Australia: NHMRC National Institute for Dementia Research (NNIDR).
2020
Journal Article
Psychosocial factors and perceived tremor disability in essential tremor
Thangavelu, Karthick, Talk, Andrew C., Clark, Gavin I. and Dissanayaka, Nadeeka N.W. (2020). Psychosocial factors and perceived tremor disability in essential tremor. Neuroscience and Biobehavioral Reviews, 108, 246-253. doi: 10.1016/j.neubiorev.2019.10.021
2020
Conference Publication
Improving diagnosis and treatment of anxiety in Parkinson’s disease: IDATA-PD study update
Dissanayaka, N.N,, Byrne, G.J., Mitchell, L.K., O’Sullivan, J.D., Padmassini, A., White, E.X., Yang, J.H.J., Forbes, E., Thangavelu, K., Au, T., Lehn, A., Adams, R. and Pachana, N.A. (2020). Improving diagnosis and treatment of anxiety in Parkinson’s disease: IDATA-PD study update. MDS Virtual Congress 2020, Online, 12-16 September 2020.
2020
Conference Publication
Improving identification and Treatmentf depression and anxiety in dementia: an integrated approach
Dissanayaka, Nadeeka (2020). Improving identification and Treatmentf depression and anxiety in dementia: an integrated approach. 5th Annual NHMRC National Institute for Dementia Research (NNIDR) Australian Dementia Forum, Adelaide, Australia, 31 May-2 June 2020.
2020
Conference Publication
Emotional inhibition in Parkinson’s disease: a HD-EEG ERP study
Su, P., Hennessy, D., Au, T. R., Angwin, A. J., Iyer, K., Yang, J. H., Copland, D. A., O'Sullivan, J. D. and Dissanayaka, N. N. (2020). Emotional inhibition in Parkinson’s disease: a HD-EEG ERP study. Herston Health Precinct Symposium 2020, Brisbane, QLD Australia, 7-11 December 2020.
2020
Conference Publication
How do staff report and manage perceived behaviours of concern with Residential Aged Care?; An evaluation of eHealth system report logs
Brimelow, R., Byrne, G.J., Beattie, E. and Dissanayaka, N. (2020). How do staff report and manage perceived behaviours of concern with Residential Aged Care?; An evaluation of eHealth system report logs. 5th Annual NHMRC National Institute for Dementia Research (NNIDR) Australian Dementia Forum, Adelaide, Australia, 31 May - 2 June 2020.
2020
Conference Publication
Virtual Reality Assisted Psychotherapy for Anxiety in Dementia
Pacas Fronza, G. and Dissanayaka, N. (2020). Virtual Reality Assisted Psychotherapy for Anxiety in Dementia. 5th Annual NHMRC National Institute for Dementia Research (NNIDR) Australian Dementia Forum, Adelaide, Australia, 31 May - 2 June 2020.
2020
Conference Publication
Anxiety is associated with verbal memory impairment in Parkinson’s disease
Forbes, E. J., Byrne, G. J., Yang, J. H., O'Sullivan, J., Copland, D. A., McMahon, K. L., Mitchell, L. M. and Dissanayaka, N. N. (2020). Anxiety is associated with verbal memory impairment in Parkinson’s disease. Australian Dementia Forum, Adelaide, SA, Australia, 31 May – 2 June 2020. Canberra, ACT, Australia: NHMRC National Institute for Dementia Research (NNIDR).
2020
Conference Publication
Neural correlates of semantic fluency deficits in Parkinson's Disease with mild cognitive impairment
Yang, J., Copland, D., McMahon, K., Byrne, G., O'Sullivan, J. and Dissanayaka, N.N. (2020). Neural correlates of semantic fluency deficits in Parkinson's Disease with mild cognitive impairment. MDS Virtual Congress 2020, Online, 12-16 September 2020.
2020
Conference Publication
Anxiety is associated with verbal memory impairment in Parkinson’s disease
Forbes, E., Byrne, G.J., Yang, J.H.J., O'Sullivan, J., Copland, D.A., McMahon, K.L., Mitchell, L.K. and Dissanayaka, N.N. (2020). Anxiety is associated with verbal memory impairment in Parkinson’s disease. 53rd Australian Association of Gerontology (AAG) Conference, Online, 18-20 November 2020.
2020
Conference Publication
Tele-CBT: Telehealth videoconference assisted psychotherapy for anxiety in people with cognitive impairment
Pacas Fronza, G., Mitchell, L.K., Pachana, N.A., Byrne, G.J., Wuthrich, V. and Dissanayaka, N.N. (2020). Tele-CBT: Telehealth videoconference assisted psychotherapy for anxiety in people with cognitive impairment. Macquarie University BioNetwork 3rd Annual Research Symposium on Dementia, Online, 14-15 September 2020.
2019
Journal Article
Preliminary Research: Virtual Reality in Residential Aged Care to reduce apathy and improve mood
Brimelow, Rachel E., Dawe, Bronwyn and Dissanayaka, Nadeeka (2019). Preliminary Research: Virtual Reality in Residential Aged Care to reduce apathy and improve mood. Cyberpsychology, Behavior, and Social Networking, 23 (3), 165-170. doi: 10.1089/cyber.2019.0286
2019
Journal Article
Report from a multidisciplinary meeting on anxiety as a non-motor manifestation of Parkinson's disease
Pontone, Gregory M., Dissanayaka, Nadeeka, Apostolova, Liana, Brown, Richard G., Dobkin, Roseanne, Dujardin, Kathy, Friedman, Joseph H., Leentjens, Albert F. G., Lenze, Eric J., Marsh, Laura, Mari, Lynda, Monchi, Oury, Richard, Irene H., Schrag, Anette, Strafella, Antonio P., Vernaleo, Beth, Weintraub, Daniel and Mari, Zoltan (2019). Report from a multidisciplinary meeting on anxiety as a non-motor manifestation of Parkinson's disease. Npj Parkinsons Disease, 5 (1) 30, 30. doi: 10.1038/s41531-019-0102-8
2019
Journal Article
Factors related to sleep disturbances for individuals with Parkinson's disease: A regional perspective
Wade, Rachael, Pachana, Nancy A., Mellick, George and Dissanayaka, Nadeeka (2019). Factors related to sleep disturbances for individuals with Parkinson's disease: A regional perspective. International Psychogeriatrics, 32 (7) PII S1041610219001212, 1-12. doi: 10.1017/S1041610219001212
2019
Journal Article
Protocol: using N-of-1 tests to identify responders to melatonin for sleep disturbance in Parkinson's disease
Nikles, J., O'Sullivan, J. D., Mitchell, G. K., Smith, S. S., McGree, J. M., Senior, H., Dissanyaka, N. and Ritchie, A. (2019). Protocol: using N-of-1 tests to identify responders to melatonin for sleep disturbance in Parkinson's disease. Contemporary Clinical Trials Communications, 15 100397, 100397. doi: 10.1016/j.conctc.2019.100397
2019
Journal Article
Shaping attitudes: the association between prior contact with residential aged care and resistance to enter residential aged care
Walker, Nicole, Dissanayaka, Nadeeka N., Scott, Theresa, Manchha, Asmita and Pachana, Nancy A. (2019). Shaping attitudes: the association between prior contact with residential aged care and resistance to enter residential aged care. International Journal of Older People Nursing, 14 (4) e12268, e12268. doi: 10.1111/opn.12268
2019
Journal Article
The CuePed Trial: how does environmental complexity impact cue effectiveness? A comparison of tonic and phasic visual cueing in simple and complex environments in a Parkinson’s Disease population with freezing of gait
Marsh, Rodney, Cole, Michael H., Dissanayaka, Nadeeka N. W., Au, Tiffany R., Clewett, Sandra, O’Sullivan, John D. and Silburn, Peter A. (2019). The CuePed Trial: how does environmental complexity impact cue effectiveness? A comparison of tonic and phasic visual cueing in simple and complex environments in a Parkinson’s Disease population with freezing of gait. Parkinson's Disease, 2019 2478980, 1-6. doi: 10.1155/2019/2478980
2019
Journal Article
Source activity during emotion processing and its relationship to cognitive impairment in Parkinson's disease
Iyer, Kartik K., Au, Tiffany R., Angwin, Anthony J., Copland, David A. and Dissanayaka, Nadeeka N.W. (2019). Source activity during emotion processing and its relationship to cognitive impairment in Parkinson's disease. Journal of Affective Disorders, 253, 327-335. doi: 10.1016/j.jad.2019.05.012
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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