Dr Sharna Jamadar
Research Fellow, Monash Biomedical Imaging
B Psychology (Hons) University of Newcastle, Australia
PhD (2010) University of Newcastle, Australia
Tel: +61 3 9902 9751
Fax: +61 3 9902 9817
Sharna Jamadar is an ARC Discovery Early Career Research (DECRA) Fellow at Monash Biomedical Imaging and School of Psychological Sciences. Her research is focused on understanding the neural bases of cognitive control and its disruption in a number of conditions, including the healthy ageing process, psychosis (schizophrenia, bipolar disorder) and substance abuse. She is especially interested in the cognitive control domains of cognitive flexibility (task switching) and response inhibition. She uses a range of cognitive neuroscience techniques to study cognitive control, including behavioural (response time, oculomotor measures), electrophysiological (electroencephalography, event-related potentials) and magnetic resonance imaging (functional and structural MRI) measures.
Sharna's current research focus is on healthy cognitive ageing. Decline in cognitive control can have devastating effects on an individual's capacity to live a high quality and safe independent life. Many studies into cognitive ageing assume that older adults can compensate for age-related changes in cognitive control function to perform at the same level as younger adults. This is an untested assumption and Sharna's work will be the first to test this widely-held assumption and examine changes in cognitive control and the emergence of compensation over the adult lifespan (20-90yrs). The results will establish whether cognitive compensation is an effective mechanism to maintain cognitive control function into old age and will inform future strategies to help older individuals live more successful and productive independent lives for longer.
In her short career, Sharna has published over twenty peer-reviewed papers, over forty conference presentations and has received numerous awards for the quality of her work, including awards from Society for Neuroscience, American College of Neuropsychopharmacology, Allen Brain Institute (competitive entry to course), Schizophrenia Research Institute, Australian Society for Psychophysiology and Australasian Society for Psychiatric Research. In 2016 she will be an Australian Research Council delegate to the Global Young Scientists Summit in Singapore, and will be a participant in the inaugural Dattner-Grant Homeward Bound Projects expedition to Antarctica.
- Monash Biomedical Imaging
- ARC Centre of Excellence for Integrative Brain Function
- School of Psychological Sciences
- Monash Institute of Cognitive and Clinical Neurosciences
- Australian Cognitive Neuroscience Society
- Society for Neuroscience
- Organisation for Human Brain Mapping
- Cognitive ageing
- Psychosis – schizophrenia, bipolar disorder
- Cognitive control
- Cognitive compensation
1. Jamadar, Thienel, Karayanidis (2015). Task Switching. In A. Toga & R.A. Poldrack (Eds). Brain Mapping: An Encyclopaedic Reference. Amsterdam: Elsevier
2. Jamadar, Johnson, Clough, Egan, Fielding (2015). ). Behavioural and neural plasticity of ocular motor control: changes in performance and fMRI activity following antisaccade training. Frontiers in Human Neuroscience, doi: 10.3389/fnhum.2015.00653
3. Smith, Mattick, Jamadar, Iredale (2014). Deficits in behavioural inhibition in substance abuse and addiction: a meta-analysis. Drug and Alcohol Dependence, 145, 1-33.
4. Corben, Kashuk, Akhlaghi, Jamadar, Delatyicki et al. (2014). Myelin paucity of the superior cerebellar peduncle in individuals with Friedreich ataxia: an MRI magnetization transfer imaging study. Journal of Neurological Sciences, 343, 138-143.
5. Karayanidis, Sanday, Jamadar (2013). Intact advance preparation but greater post-stimulus interference when switching tasks in middle childhood. Frontiers in Human Neuroscience, doi:10.3389/fnhum.2013.00841
6. Dager, Jamadar, Stevens, Rosen, Jiantonio-Kelly et al. (2014) fMRI response during figural memory task performance in college drinkers. Psychopharmacology, 23, 167-179.
7. Karayanidis, Jamadar (2014). Event-related potentials reveal multiple components of proactive and reactive control in task-switching. In J.A. Grange & G. Houghton, Task Switching and Cognitive Control, Oxford University Press, New York.
8. Jamadar, Fielding, Egan (2013) Quantitative meta-analysis of fMRI and PET studies reveals consistent activation in fronto-striatal-parietal regions and cerebellum during antisaccades and prosaccades. Frontiers in Psychology; doi: 10.3389/fpsyg.2013.00749
9. Smith, Jamadar, Provost, Michie (2013). Motor and non-motor inhibition in the Go/NoGo task: an ERP and fMRI study. International Journal of Psychophysiology, 87, 244-253.
10. Jamadar, Pearlson, O'Neil, Assaf (2013). Semantic association fMRI impairments represent a potential schizophrenia biomarker. Schizophrenia Research, 145, 20-26
11. Jamadar, O'Neil, Pearlson, Ansari, Gill, Jagannathan, Assaf (2013). Impairment in semantic retrieval is associated with symptoms in schizophrenia but not bipolar disorder. Biological Psychiatry: Special Issue Genome and Phenome in Schizophrenia, 73, 555-564 [Commentary in Redpath et al., Biological Psychiatry, 73, 495-796].
12. Jamadar, Powers, Meda, Calhoun, Gruen, Gelernter, Gruen & Pearlson (2013). Genetic influences of resting state fMRI activity in language-related brain regions in healthy controls and schizophrenia. Brain Imaging & Behavior, 7, 15-27.
13. Ruge, Jamadar, Zimmerman, Karayanidis (2013). The many faces of preparatory control in task switching: reviewing a decade of fMRI research. Human Brain Mapping, 34, 12-35.
14. Jamadar, Asssaf, Jagannathan, Anderson, Pearlson (2012). Figural memory performance and fMRI activity across the adult lifespan. Neurobiology of Aging, 34, 110-127
15. Jamadar, DeVito, Meda, Stevens, Potenza, Krystal & Pearlson (2012). Memantine, an NMDA-receptor antagonist, differentially affects response inhibition related fMRI response in individuals with and without a family history of alcoholism. Psychopharmacology 222, 129-140.
16. Mansfield, Karayanidis, Jamadar, Heathcote & Forstmann (2011). Preparatory adjustments of response threshold during task switching: a model-based fMRI study. Journal of Neuroscience, 31, 14688-14692.
17. Jamadar, Powers, Meda, Gelernter, Gruen & Pearlson (2011). Genetic influences of cortical grey matter in language-related regions in healthy controls and schizophrenia. Schizophrenia Research, 129, 141-148
18. Jamadar, Nicholson, Michie, Karayanidis (2010). Sequence effects in cued task switching modulate response preparedness and repetition priming processes. Psychophysiology, 47(2), 365-386.
19. Jamadar, Provost, Fulham, Michie & Karayanidis (2010). Multiple sources underlie ERP indices of task-switching. In W. Christensen, E Schier & J Sutton (Eds). Proceedings of the 9th Conference of the Australiasian Society for Cognitive Science (pp. 154-161). Sydney: Macquarie Centre for Cognitive Science.
20. Jamadar, Hughes, Fulham, Michie, Karayanidis (2010). The spatial and temporal dynamics of anticipatory preparation and response inhibition in task-switching. NeuroImage, 51, 432-449.
21. Jamadar, Michie, Karayanidis (2010). Compensatory mechanisms result in intact task-switching performance in schizophrenia. Neuropsychologia, 48(5), 1305-1323.
22. Karayanidis, Jamadar, Ruge, Phillips, Heathcote & Forstmann (2010). Advance preparation in task-switching: converging evidence from behavioural, brain activation and model-based approaches. Frontiers in Cognition, 1, 1-13.
23. Michie, Budd, Fulham, Hughes, Jamadar, Johnson, et al. (2008). The potential for new understandings of normal and abnormal cognition by integration of neuroimaging and behavioral data: Not an exercise in carrying coals to Newcastle. Brain Imaging and Behavior, 2, 318.
1. 2015 Jamadar Platform Access Grant Monash University
2. 2015 Jamadar Advancing Women's Research Success Monash University
3. 2015 Jamadar Cognitive Compensation in Ageing. Australian Research Council Discovery Early Career Researcher Award (DECRA)
4. 2013 Jamadar Does the Compensation-Related Utilisation of Neural Circuits Hypothesis (CRUNCH) account for compensatory brain activity during cognitive control in healthy aging? Monash University
5. 2012 Jamadar. A pilot study for the investigation of the genetic determinants of age-related changes in brain structure, function and connectivity. Monash University.
6. 2011 Jamadar, Oberlin, Wilber, Blank, Seamon, Pearlson. Using SenseCam for neurocognitive rehabilitation with memory-impaired patients. Hartford Hospital.
7. 2009 Karayanidis, Parsons, Michie, Levi, Jamadar, Hughes, Schofield, Bateman. A structural and functional brain imaging study of the effect of white matter lesions on cognitive and motor processes. Hunter Medical Research Institute and Hunter Children's Research Foundation.