Seminar Computational Intelligence B (708.112)

SS 2006

Institut für Grundlagen der Informationsverarbeitung (708)
 

Lecturer: O.Univ.-Prof. Dr. Wolfgang Maass

Office hours: by appointment (via e-mail)

E-mail: maass@igi.tugraz.at
Homepage: www.igi.tugraz.at/maass/



Location: IGI-seminar room, Inffeldgasse 16b/I, 8010 Graz
Date: starting from March 15, 2006 every Wednesday, 16.15 - 18.00 p.m.


Content of the seminar:

The Computational Intelligence Seminar B will focus on new results about learning, models
for the computational function of cortical columns, and models for biological vision that are
particularly relevant for our research.

Talks will start at 16:15 in our seminar room (except for the first talk on March 31).


Talks:

31.3.2006 (friday) at 15:15 (!):
Prof. Heiner Roemer (Institut fuer Zoologie, Karl-Franzens-Universitaet Graz)

Codierung verhaltensrelevanter Signale in einem einfachen neuronalen Netzwerk bei Heuschrecken

3.5.2006
Malte Rasch:  Nonnegative matrix factorization

Material:
Learning the parts of objects by non-negative matrix factorization
DD Lee, HS Seung - Nature, 1999
http://adsabs.harvard.edu/abs/1999Natur.401..788L

Unsupervised Learning by Convex and Conic Coding
DD Lee, HS Seung - NIPS, 1996
http://hebb.mit.edu/people/seung/papers/convex.ps

Algorithms for Non-negative Matrix Factorization
DD Lee, HS Seung - NIPS, 2000
http://www.nips.snl.salk.edu/NIPS2000/00papers-pub-on-web/LeeSeung.ps.gz

10.5.2006
Gerhard Neumann: Learning crossmodal spatial transformations through STDP

Learning crossmodal spatial transformations through STDP by A. Davison and Y. Fregnac
( the paper is going to appear in the J. of Neuroscience, the file is available in our pdf archiv)

17.5.2006
Christian Hoeflechner: Gain modulation as a potential basic computational function of cortical circuits

Material:
Gain modulation in the central nervous system: where behavior, neurophysiology, and computation meet
E Salinas, TJ Sejnowski - Neuroscientist, 2001

Context-dependent selection of visuomotor maps,
E Salinas - BMC Neuroscience, 2004
http://www.biomedcentral.com/1471-2202/5/47

Gain Modulation: A Major Computational Principle of the Central Nervous System
E Salinas, P Thier - Neuron, 2000
http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WSS-417F1KY-7-5&_cdi=7054&

Coordinate transformations in the visual system: how to generate gain fields and what to compute with them,
E Salinas, LF Abbott - PROGRESS IN BRAIN RESEARCH, 200
from  http://neurotheory.columbia.edu/~larry/

Spatial Transformations in the Parietal Cortex Using Basis Functions
A Pouget, TJ Sejnowski - JOURNAL OF COGNITIVE NEUROSCIENCE, 1997

Gain modulation from background synaptic input
FS Chance, LF Abbott, AD Reyes - Neuron, 2002
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12194875&dopt=Abstract

24.5.2006

a)  Ashley Mills: Synaptic tagging and heterosynaptic plasticity

Material:
Synaptic tagging? who's it?
KC Martin, KS Kosik - Nature Reviews Neuroscience, 2002
http://www.nature.com/nrn/journal/v3/n10/abs/nrn942_fs.html;jsessionid=ECE8C36472DEC1C3B2CC8391FC484418

Homosynaptic and heterosynaptic inhibition of synaptic tagging and capture of long-term potentiation by
previous synaptic activity.
by Young JZ, Nguyen PV.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list

Competing for Memory: Hippocampal LTP under Regimes of Reduced Protein Synthesis, by Fonseca et al
http://www.neurobio.ucla.edu/~lmp/bonhoeffer04.pdf

Synapse specificity of long-term potentiation breaks down at short distances
by FLORIAN ENGERT AND TOBIAS BONHOEFFER, Nature 388, 279 - 284
(not directly related to tagging, but to transmission of plasticity)

Frey U, Morris RG. Synaptic tagging and long-term potentiation.
Nature. 1997 Feb 6;385(6616):533-6

Late-associativity, synaptic tagging, and the role of dopamine during LTP and LTD
S Sajikumar, JU Frey - Neurobiol. Learn. Mem, 2004
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WNM-4C708J7-1&

b)  Mario Hoefler: A sensorimotor account of vision

Material:
O'Regan, J. Kevin and Noe, Alva (2001) A sensorimotor account of vision and visual consciousness.
BEHAVIORAL AND BRAIN SCIENCES (2001)  24(5)
http://www.bbsonline.org/documents/a/00/00/05/06/bbs00000506-00/

31.5.2006
Dejan Pecevski:  Gradient learning in spiking neural networks by dynamic perturbation of conductances

Material:
Gradient learning in spiking neural networks by dynamic perturbation of conductances
Authors: Ila R. Fiete, H. Sebastian Seung
http://arxiv.org/abs/q-bio.NC/0601028

7.6.2006
Martin Bachler: TBA

14.6.2006
Stefan Haeusler: TBA


                                                                                                                                                                                                                        2006-03-23, daniela