Mark van Rossum 's Webpage

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Lecturer at the School of Informatics, University of Edinburgh

Institute for Adaptive and Neural Computation

Contact me: mvanross <at> inf.ed.ac.uk
Public PGP key
phone: 44-131-6511211
Room 2.52, 10 Crichton Street,
Edinburgh EH8 9AB
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News

Research Summary 

My research area is computational neuroscience. I use computational and mathematical techniques to understand the working of the brain. I hope that, like in physics, it will be possible to find simple underlying principles of the brain's functioning.
My particular interests are:

  • Synaptic plasticity: [ref. 15,17,20,24]. Synaptic plasticity is thought to underly memory formation in the nervous system. I'm researching the computational consequences of realistic, spike timing dependent plasticity rules. In particular, the stability of memory and homeostasis [13,18] have my current interest.
    One particular project is about synaptic tagging and capture.
  • Noise in neural systems: The nervous system has  extrinsic and intrinsic noise sources. From an engineering point of view this leads to the question, how does the nervous system deal with this noise. It turns out that the noise might be beneficial in some cases. More precisely, noise prevent synchronization (which reduces information content) and allows for fast and accurate propagation of signals [ref.16,19,22,26]
  • The early visual system: The COLAMN project is a major UK project that tries to create a full computer model of primary visual cortex using detailed information about its anatomy and physiology, leading us towards the principles of neural computation and ultra efficient hardware implementations.
    The retina: Together with Rob Smith, I made a model of the rod-rodbipolar synapse [ref. 12]. This is the first synapse in the visual pathway and is important at very low light levels. In order to preserve signal quality, a special thresholding is required at this synapse. Some very good data on this system were recently measured. Together with Paul Clark I have extended the theory [ref 23]. We have also created a very realistic model of a ganglion cell with takes all known noise sources explicitly into account [21].
Former labs
Teaching
Here you find the official webpages of the Neural Computation (NC) course (these pages are local access only).
The Lecture notes for Neural Computation are available here to all.

The Lecture notes Formal Modelling Cognitive Science are for a first year course.
They also serve as a maths refresher for NC students.

Old pages Distributed Computation for Cognition (DCFC) course. (03/04)

Postdocs
We have currently an opening for a postdoc.

Self-funded possiblities:
- Many funding councils (MRC, EPSRC) have options for fellowships, in particular for people wanting to shift careers.
- Also check this interdisplinary fellowship from HFSP

Students

Students looking for a PhD position are  best served by our own Doctoral Training Centre (DTC).
The Independent has a article on Doctoral Training Centres: article
Unfortunately, only UK (and a few EU) students can be fully paid through this; EU students can receive part funding; non-UK/non-EU will have to provide their own funding.
We are mainly looking for people with an excellent background in physics, mathematics, or computer science.

Here is a brief FAQ about switching to neural computation from physics or math (based on own experiences).
Please check the follow links for general policies and funding: Informatics , ANC.

List of possible projects (local access only)

Group

Post-docs

Judith Law works on contextual interaction and synaptic depression.
Matthias Hennig works on synaptic tagging models.

Phd-Students (in our program all students have 2 supervisors)

Steve Huang works on head direction cells (supervision with Emma Wood).
Lawrence York works on contrast dependent latencies (supervision with Mike Oram).
Cian O'Donnell works on stochastic ion channels (supervision with Matt Nolan).

MSc students/ UG students / visitors

Maia Janowitz (MSc, summer 2003) has worked on models of the role of excitability changes for learning (paper 24).
Paul Clark (UG 2004) has worked on information transmission in the retina (paper 23)
Hinnerk Feldwisch (summer 2004) has worked on a novel noise analysis method (paper under construnction).
Hannes Wiesner (MSc, summer 2005) worked on noise in retinal ganglion cells.
Lars Feuerbach (summer 05) worked on STDP models.
Georg Zeissner and Parnil Mhatre (MSc, summer 06) worked on contextual interaction in V1, and retinal noise, respectively.
Anna Lewis (summer 06) worked on STDP models.

Former members

Matthijs van der Meer (PhD 2007) worked on the head-direction system in rats (supervision with Emma Wood); now postdoc with Dave Redish at the University of Minnesota.
Andrea Greve (PhD 2008) worked on ERPs and models related to memory and familiarity (supervision with David Donaldson); now research fellow at Wales Institute of Cognitive Neuroscience in Cardiff.
Guy Billings (PhD 2008) worked on STDP and stability; now works on cerebellum with Angus Silver at UCL.
Tim O'Leary (PhD 2009) worked on homeostasis (supervision with David Wyllie).
Adam Barrett (postdoc 2007-2008) now in Sussex
Jesus Cortes (postdoc 2005-2008) Now Ramon-y-Cahal fellow in Granada

Publications:

Regular articles

Other publications

  • A Roth and MvR, Modeling Synapses. Chapter
  • N Brunel and MvR, Lapicque’s 1907 paper: from frogs to integrate-and-fire, Biological Cybernetics (2007 and translation of Lapicque 1907
  • MvR and R.G. Smith, Noise removal by nonlinear synapses, Computational Neuroscience: Trends in research 1998.J. Bower ed., 297-303 (1998)  (conference proceedings),
  • MvR Measuring font legibility (unpublished manuscript)
  • MvR, Mesoscopische verschijnselen in veelvoudige lichtverstrooiing, J. Dutch Phys. Soc. 18, 307-311 (1995). Prize winning article in contest to popularize physics  
  • MvR, Mesoscopic phenomena in multiple light scattering, PhD thesis, 132 pp. (1995)  
  • P.N. den Outer, MvR, Th.M. Nieuwenhuizen and A. Lagendijk, Locating objects with diffuse light in 'OSA proceedings on Advances in optical imaging and photon migration', R.R. Alfano ed. (1994)  
  • MvR, Th.M. Nieuwenhuizen, E. Hofstetter and M. Schreiber, Band tails in a disordered system in 'Photonic band gaps and localization', C. M. Soukoulis ed., 509-513, Plenum Press (1993)  
  • MvR, Anyons and Bosonization in 2+1 dimensions, MSc thesis (1991) 

More stuff:

I am happy to send code of finished projects to colleagues. However, the code will be messy and largely uncommented.

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