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Neurolex Group

Department of Psychology

Studying at Cambridge

 

Dr Li Su

Dr Li Su

Senior Research Associate

Developer of Spatiotemporal Searchlight

Representational Similarity Analysis (RSA)

(I am also working at the Department
of Psychiatry since 1st Oct 2013)
Department of Psychology
University of Cambridge
Downing Street

Cambridge CB2 3EB
Office Phone: +44 (0)1223 764 288

Biography:

I have a degree in computer science from Beijing University of Posts and Telecommunication, and MSc and PhD in computer science from the School of Computing and Centre for Cognitive Science and Cognitive Systems at University of Kent. I previously worked in Institute of Psychiatry, King's College London and MRC Cognition and Brain Sciences Unit, Cambridge. My research interests include language comprehension, the cognitive and affective control, human-computer interaction and cognitive neuropsychiatry. I develop and apply several cutting-edge technologies such as real-time functional MRI, multivariate pattern analysis for MEG/EEG (in particular, Spatiotemporal Searchlight RSA, c.f. Su et al., PRNI 2012), and computational modelling in systems and cognitive neuroscience.

cohort
Significant clusters showing brain areas that carry information about cohort competition over space and time.

 

Other Research Interests

Modelling Cognitive and Affective Control I model how task directed cognitive control is supported by implicational and propositional subsystems (Barnard, 1999) and how it interacts with an affective body-state subsystem, which relates to long-term goals, instincts, motivations, needs, values and preferences. The model also predicts the pattern of conscious perception during the Attentional Blink task (Raymond et al., 1992) and the changes of awareness when either affective or non-affective task irrelevant processing occurs. This provides a specific system-level account of the dynamic interaction between cognitive and affective control, and proposing a general cognitive architecture based on parallel distributed systems derived from theoretical computer science (Su et al., 2011).

    ICS

    Brain Computer Interfaces and Their Applications Recent developments in functional magnetic resonance imaging (fMRI) and computational methods allow very rapid data transfer and analysis within a few seconds of data collection. Such (near) "real time" fMRI (rt-fMRI) provides a novel brain-computer interface (BCI) which can be used for neurofeedback. This nonpharmacological therapy has already been shown to have clinical promise (DeCharms, 2008). Studies from healthy controls suggest the right anterior insula (RAI) is amenable to regulation (Caria, 2007; Lawrence and Su et al., 2013). This region is implicated in affective processing (Craig, 2009), and is hypoactive in some psychiatric conditions (Phillips et al., 2001).

    real-time-fMRI

     

    Grants Awarded

    • 2011-2012, Institute of Psychology, Chinese Academy of Sciences, Competitive (Open) Grant, “Attentional Impairments in individuals with schizotypal personality features and schizophrenia: an ERP and Attentional Blink Study”  (Principal Investigator, RMB 50,000)
    • 2012-2015, National Natural Science Foundation of China, “Neural mechanism of anhedonia, working memory and prospective memory in schizophrenia” (Co-PI with Professor Chan, RMB 800,000, success rate = 16.4%)
    • 2011- 2015, Institute of Psychology, Chinese Academy of Sciences, “Real-time fMRI intervention of anhedonia in psychosis and major depression” (Co-PI with Professor Chan, RMB 530,000)

     

     

    Previous Research Assistants: Cai Wingfield, Isma Zulfiqar

    PhD StudentAndreas Marouchos (with Professor Tyler)

     

    Key Publications

    (Peer-reviewed)

     

    • Su, L., Gomez, R. and Bowman, H. (accepted) Analysing Neurobiological Learning Using Communicating Automata. Formal Aspects of Computing, Springer
    • Lawrence*, E.J., Su*, L., Barker, G.J., Medford, N., Dalton, J, Williams, S.C.R., Birbaumer, N., Veit, R., Sitaram, R., Bodurka, J., Brammer, M., Giampietro, V. and David, A.S. (accepted) The Modulation of Anterior Insula: Reinforcement Learning using Real-time fMRI Neurofeedback, Neuroimage. (*shared 1st authorship)
    • Wang, Y., Yang, T.X., Su, L., Yan, C., Wang, Y., Huang, J., Fan, M.X., Yin, D.Z., Jin, Z., Zeng, Y.W., Shum, D.H.K. and Chan, R.C.K. (accepted) Neural correlates of prospective memory in individuals with schizotypal personality features, Neuropsychology
    • Bozic, M., Tyler, L.K., Su, L., Wingfield, C., and Marslen-Wilson, W.D. (2013) Neurobiological systems for lexical representation and analysis in English, Journal of Cognitive Neuroscience
    •  Su, L., Fonteneau, E., Marslen-Wilson, W. and Kriegeskorte, N. (2012) Spatiotemporal Searchlight Representational Similarity Analysis in EMEG Source Space. 2nd International Workshop on Pattern Recognition in NeuroImaging (PRNI 2012), IEEE Xplore, 97-100, doi:10.1109/PRNI.2012.26 [PDF]
    • Bowman, H., Filetti, M., Janssen, D., Su, L., Alsufyani, A. and Wyble, B. (2012) Subliminal Salient Search Illustrated: Deception Detected on the Fringe of Awareness, PLoS One 8(1): e54258. doi:10.1371/journal.pone.0054258 [HTML]
    • Bowman, H. and Su, L. (2012) Cognition, Concurrency Theory and Reverberations in the Brain: in Search of a Calculus of Communicating (Recurrent) Neural Systems. In Proceedings of HOWARD-60: higher-order workshop on automated runtime verification and debugging [ PDF]
    • Su, L., Bowman, H. and Barnard, P.J. (2011) Glancing and then looking: on the role of body, affect and meaning in cognitive control. Frontiers in Psychology, 2:348 [HTML]
    • Bowman, H., Su, L., Wyble, B. and Barnard, P.J. (2011). Salience sensitive control, temporal attention and stimulus-rich reactive interfaces. Human Attention in Digital Environments. Cambridge University Press [PDF]
    • Su, L., Barnard, P.J. and Bowman, H. (2010) On the Fringe of Awareness, Attention and Emotion, Lecture Notes in Computer Science, 6354, 504-509, Springer [PDF]
    • Su, L., Bowman, H., Barnard, P.J. and Wyble, B. (2009). Process Algebraic Modelling of Attentional Capture and Human Electrophysiology in Reactive Systems. Formal Aspects of Computing, 21, 513-539, Springer [HTML]
    • Su, L., H. Bowman, and P.J. Barnard (2008). Performance of reactive interfaces in stimulus rich environments, applying formal methods and cognitive frameworks, Electronic Notes in Theoretical Computer Science, 208, 95-111, Elsevier [PDF] [HTML]
    • Su, L., H. Bowman, and P.J. Barnard (2007). Attentional capture by meaning: A multi-level modelling study. In Proceedings of the 29th Annual Cognitive Science Society, 1521-1526, Austin, TX: Cognitive Science Society [PDF]
    • Su, L., H. Bowman, and B. Wyble (2005). Symbolic encoding of neural networks using communicating automata with applications to verification of neural network based controllers. In Proceedings of the IJCAI-05 Workshop on Neural-Symbolic Learning and Reasoning, NeSy’05, Edinburgh, UK [PDF]
    • Bowman, H., Gomez, R. and Su, L. (2005). A tool for the syntactic detection of zeno-timelocks in timed automata, Electronic Notes in Theoretical Computer Science, 139(1):25-47, Elsevier [PDF] [HTML]

     

    Under Review/Revision

    • Zhang, J. and Su, L. (under review) Temporal Autocorrelation-Based Beamforming, Journal of Royal Statistical Society
    • Bowman, H., Filetti, M., Alsufyani, A., Janssen, D., Su, L. and Wyble, B. (under review) Countering countermeasures: detecting identity lies by detecting conscious breakthrough, PLoS One
    • Zou, L.Q., Wang, K., Su, L., Shum, D.H.K., Lui, S.S.Y., Cheung, E.F.C. and Chan R.C.K (under revision) Verbal self-monitoring in individuals with schizotypal personality disorder trait proneness: An exploratory ERP study
    • Nili, H., Wingfield, C., Walther, A., Su, L. and Kriegeskorte, N. (under revision) A MATLAB Toolbox for Representational SimilarityAnalysis, PLoS Computational Biology

     

    Conference Abstracts

    • Su, L., Fonteneau, E., Wingfield, C., Bozic, M. and Marslen-Wilson, W. (2012) Dynamic morpho-lexical processing revealed by time-resolved MVPA. British Association for Cognitive Neuroscience Conference and Annual Meeting
    • Bozic, M., Woolgar, A., Fonteneau, E., Whiting, C., Su, L., Wingfield, C. and Marslen-Wilson, W.D. (2012) Modulation of speech processing following item repetition. 18th Annual meeting of the Organization for Human Brain Mapping
    • Woolgar, A., Bozic, M., Whiting, C., Fonteneau, E., Su, L., Wingfield, C. and Marslen-Wilson, W.D. (2012) More repetitions or more items? The effects of repeating stimuli on MVPA for fMRI and E/MEG. 18th Annual meeting of the Organization for Human Brain Mapping
    • Su, L., Woolgar, A., Caroline Whiting, C., Fonteneau, E., Bozic, M. and Marslen-Wilson, W. (2012) Optimising Searchlight Representational Similarity Analysis (RSA) for EMEG. 18th Annual Meeting of the Organization for Human Brain Mapping
    • Su, L., Fonteneau, E., Wingfield, C., Bozic, M. and Marslen-Wilson, W.D. (2012) Searchlight representational similarity analysis of complex morpho-lexical processes. Experimental Psychology Society Meeting
    • Bozic, M., Fonteneau, E., Su, L., and Marslen-Wilson, W.D. (2012) Computational processes in the fronto-temporal language network. Experimental Psychology Society Meeting
    • Fonteneau, E., Su, L., Bozic, M. and Marslen-Wilson, W.D. (2012) Phase synchrony network underlying morpho-syntactic processing: an MEG/EEG study. Experimental Psychology Society Meeting
    • Su, L., Fonteneau, E., Wingfield, C. and Marslen-Wilson, W (2011) The dynamics of complex morpholexical processes revealed by searchlight representational similarity analysis of MEG/EEG data, Neurobiology of Language Conference
    • Su, L. Fonteneau, E., and Marslen-Wilson, W. (2011) Searchlight Representational Similarity Analysis of Inflectional Morpho-phonological processing, Cognitive Neuroscience Society Annual Meeting
    • Bozic, M., Su. L., Wingfield, C. and Marslen-Wilson, W.D. (2010) Characterizing lexical complexity computations in the fronto-temporal language network. Neurobiology of Language Conference
    • Fonteneau, E., Bozic, M., Su, L., Wingfield, C., Randall, B. and Marslen-Wilson, W. D. (2010) Spatiotemporal dynamics of morphological processing: an MEG/EEG investigation. 40th Annual Meeting of the Society for Neuroscience
    • Su, L., Wingfield, C., Bozic, M., Fonteneau, E., Marslen-Wilson, W. and Kriegeskorte, N. (2010) A Multimodal Approach to Representational Similarity Analysis, 16th Annual Meeting of the Organization for Human Brain Mapping
    • Lawrence, E.J., Su, L., Giampietro, V., Barker, G, Medford, N., Dalton, J, Birbaumer, N., Veit, R., Sitaram, R. and David, A.S. (2010) Modulation of the Anterior Insula Using Real-time fMRI Neural Feedback, 16th Annual Meeting of the Organization for Human Brain Mapping
    • Fonteneau, E., Bozic, M., Su, L., Wingfield, C., Randall, B. and Marslen-Wilson, M. (2010) Spatiotemporal dynamics of morphological processing: an MEG/EEG investigation, 40th Annual Meeting of Society for Neuroscience
    • Bozic, M., Su, L., Wingfield, C. and Marslen-Wilson, W. (2010) Characterizing lexical complexity computations in the fronto-temporal language network, 17th Cognitive Neuroscience Society Annual Meeting
    • Su, L., Giampietro, V., Barker, G., Medford, N., Dalton, J., Birbaumer, N., Veit, R., Sitaram, R., Brammer, M., David, A.S., & Lawrence, E.J. (2009). Modulation of the Anterior Insula using Real-time Functional MRI Neural Feedback. 18th British Chapter ISMRM Annual Symposium, Imperial College London
    • Lawrence, E.J., Su, L., Giampietro, V., Medford, N., Dalton, J, Birbaumer, N., Veit, R., Sitaram, R., Brammer, M., Barker, G., & David, A.S. (2009). Self-Regulation of the Anterior Insula using Neural Feedback: Pilot Data and Future Directions. 2009 Mind and Life Summer Research Institute.