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Department of Cognitive Science

Dr Tijl Grootswagers

BSc RU, MSc RU.

Tijl Grootswagers

PhD Student

Contact Details

email : tijl.grootswagers@sydney.edu.au

External Address

School of Psychology
The University of Sydney

I also have a profile at the ARC Centre for Excellence in Cognition and its Disorders.

Profile

The focus of my research is to understand how the brain represents and processes information. I use various neuroimaging techniques, such as fMRI to examine how information is represented in brain areas, and MEG for studying the temporal dynamics of information processing. My research uses cutting edge multivariate pattern analysis (MVPA) methods to analyse neuroimaging data. I work on novel approaches for relating brain activity patterns to human behaviour and to artificial models of human cognition, such as deep neural networks. I mainly apply these methods to understand how the human brain perceives and represents visual objects and object categories, and how it uses these representations for making behavioural decisions.
I also aim to make MVPA methods broadly accessible in cognitive neuroscience research. I do this by contributing to the CoSMoMVPA toolbox, though tutorials and workshops, and by actively collaborating with Australian and international researchers to introduce MVPA to other fields of cognitive neuroscience.

Awards

  • Australian Cognitive Neuroscience Society (ACNS) Student Travel Award $250.00 (2016), Grootswagers, T.
  • CCD Annual Workshop Highly Commended Poster Award (2016), Grootswagers, T.

Grants Awarded

Selected Publications

Periodicals

  • de Wit, B., Badcock, N.A., Grootswagers, T., Hardwick, K., Teichmann, L., Wehrman, J., Williams, M., & Kaplan, D.M. (2017). Neurogaming technology meets neuroscience education: A cost-effective, scalable, and highly portable undergraduate teaching laboratory for neuroscience. Journal of Undergraduate Neuroscience Education, 15(2), A104-A109. [Link]
  • Grootswagers, T., Kennedy, B.L., Most, S.B., & Carlson, T.A. (In Press). Neural signatures of dynamic emotion constructs in the human brain. Neuropsychologia. doi:10.1101/200873
  • Grootswagers, T., Ritchie, J.B., Wardle, S.G., Heathcote, A., & Carlson, T.A. (2017). Asymmetric compression of representational space for object animacy categorization under degraded viewing conditions. Journal of Cognitive Neuroscience. doi:10.1162/jocn_a_01177
  • Grootswagers, T., Wardle, S.G., & Carlson, T.A. (2017). Decoding dynamic brain patterns from evoked responses: A tutorial on multivariate pattern analysis applied to time-series neuroimaging data. Journal of Cognitive Neuroscience, 29(4), 677-697. doi:10.1162/jocn_a_01068
  • Wardle, S., Kriegeskorte, N., Grootswagers, T., Khaligh-Razavi, S.-M., & Carlson, T. (2016). Perceptual similarity of visual patterns predicts dynamic neural activation patterns measured with MEG. NeuroImage, 132, 59-70. doi:10.1016/j.neuroimage.2016.02.019

Published Abstracts

  • Contini, E., Williams, M.A., Grootswagers, T., Goddard, E., & Carlson, T. (2016). Dichotomy versus continuum: Evidence for a more complex agency model of visual object categorisation [Abstract]. Journal of Vision, 16, 252. doi:10.1167/16.12.252

Published Conference Proceedings

  • Grootswagers, T., Dijkstra, K., ten Bosch, L., Brandmeyer, A., & Sadakata, M. (2013). Word identification using phonetic features: Towards a method to support multivariate fMRI speech decoding. In F. Bimbot, C. Cerisara, C. Fougeron, G. Gravier, L. Lamel, F. Pellegrino & P. Perrier (Eds.), Proceedings of the 14th Annual Conference of the International Speech Communication Association (Interspeech 2013) (pp. 3200-3204 ). Red Hook: Curran Associates.
  • Grootswagers, T., Wareham, T., & van Rooij, I. (2013). Closer than you think? Options for efficiently approximating optimal analogies under structure-mapping theory. In M. Knauff, M. Pauen, N. Sebanz & I. Wachsmuth (Eds.), Proceedings of the 35th Annual Meeting of the Cognitive Science Society (Cogsci 2013) (pp. 4161). Austin: Cognitive Science Society.

Conference Presentations, Colloquia, and other presentations

  • Carlson, T., Grootswagers, T., Leopold, D., & McMahon, D. (2016, November). Seeing the trees through the forest: Characterising selectivity in neural population codes. Paper presented at the 6th Australian Cognitive Neuroscience Society Conference (ACNS), Shoal Bay.
  • Grootswagers, T., & Radlow, C., & Carlson, T. (2016, November). Beyond brain decoding: Searching for information in the brain that also predicts behaviour. Paper presented at the 6th Australian Cognitive Neuroscience Society Conference (ACNS), Shoal Bay.
  • de Wit, B., & Grootswagers, T., & Teichmann, L. (2016, September). Cognitive and brain sciences: Using a gaming headset to measure brain activity. Presentation given at the Taster Day for Health and Medical Sciences, Macquarie University.
  • Grootswagers, T., Cichy, R., & Carlson, T. (2016, August). Predicting behaviour from decoded searchlight representations shows where decodable information relates to behaviour. Poster session presented at the ARC Centre of Excellence in Cognition and its Disorders Annual Workshop, The Fairmont Resort, Leura.
  • Contini, E., Williams, M.A., Grootswagers, T., Goddard, E., & Carlson, T. (2016, May). Dichotomy versus continuum: Evidence for a more complex agency model of visual object categorisation. Poster session presented at the 16th Annual Meeting of the Vision Sciences Society, St Pete Beach, USA. [Link]
  • Contini, E., Carlson, T., Goddard, E., Grootswagers, T., & Williams, M. (2015, November). Dichotomy versus continuum: A pilot study evaluating the representational space of object categories in the brain. Poster session presented at the ARC Centre of Excellence in Cognition and its Disorders Annual Workshop, Macquarie University, Sydney.
  • Contini, E., Williams, M., Goddard, E., Grootswagers, T., & Carlson, T. (2015, November). Evaluating subcategory representations in visual object recognition using magnetoencephalography. Poster session presented at the 5th Australasian Cognitive Neuroscience Society Conference, Auckland, NZ.
  • Grootswagers, T., & Carlson, T. (2015, November). Decoding human minds from monkey brains. Poster session presented at the ARC Centre of Excellence in Cognition and its Disorders Annual Workshop, Macquarie University, Sydney.
  • Grootswagers, T., McMahon, D.B.T., Leopold, D.A., Carlson, T.A. (2015, October). Not all that glitters is gold: predicting behavior from brain representations suggests that only a subset of decodable information is used by the brain. Presentation given at the Annual Meeting of the Society for Neuroscience (SFN), Chicago, USA. [Link]
  • Contini, E., Carlson, T., Goddard, E., Grootswagers, T., & Williams, M. (2015, July). Dichotomy versus continuum: A pilot study evaluating the representational space of object categories in the brain. Poster session presented at the Swinburne Brain Imaging Symposium 2015, Swinburne University of Technology, Melbourne.
  • Grootswagers, T., Ritchie, B., Heathcote, A., & Carlson, T. (2015, May). Decoding the emerging representation of degraded visual objects in the human brain. Poster session presented at the 15th Annual Meeting of the Vision Sciences Society (VSS), St. Pete Beach, USA.
  • Grootswagers, T., & Carlson, T. (2015, April). Decoding human minds from monkey brains. Poster session presented at the 42nd Annual Australasian Experimental Psychology Conference (EPC), Sydney.
  • Grootswagers, T. (2013, November). Having your cake and eating it too: Towards a fast and optimal method for analogy derivation. Colloquium at the Institute of Cognitive Science, University of Osnabrück, Osnabrück, Germany.
  • Grootswagers, T., Wareham, T., & van Rooij, I. (2013, August). Closer than you think? Options for efficiently approximating optimal analogies under structure-mapping theory. Poster session presented at the 35th Annual Meeting of the Cognitive Science Society (Cogsci 2013), Berlin, Germany.
  • Grootswagers, T., & Wareham, T. (2013, May). Closer than you think? Viable options for approximating optimal analogies under structure mapping theory. Colloquium at the Good AIfternoon, Faculty of Social Sciences: Artificial Intelligence, Radboud University, Nijmegen.

Further Information

Seminars

Who is Visiting

Contact Details

Telephone: (02) 9850 9599
Fax : (02) 9850 6059
Email : cogsci@mq.edu.au
Web : www.cogsci.mq.edu.au