Displaying 12 results from an estimated 12 matches for "neurophysiology".
2007 Mar 21
0
2 post-doctoral positions in neurophysiological data analysis with R
Two post-doctoral positions are available from the Brain Physiology
Laboratory in Paris (France).
The first position is available immediately to work on spike sorting and
spike train analysis. It consists in both data analysis and methods
development. Familiarity with neurophysiology is not required.
Familiarity with R and with some of the methodologies used: clustering,
classification, MCMC, counting processes, is a big plus. For more
information please visit:
http://www.biomedicale.univ-paris5.fr/physcerv/C_Pouzat/PostDoc1.html
The second position starting in September to...
2003 Feb 26
1
calculationg condition numbers
...<- eigen(cor(x))
> e$val
[1] 6.6653e+07 2.0907e+05 1.0536e+05 1.8040e+04 2.4557e+01 2.0151e+00
> sqrt(e$val[1]/e$val)
[1] 1.000 17.855 25.153 60.785 1647.478 5751.216
thanks
christoph
--
Christoph Lehmann Phone: ++41 31 930 93 83
Department of Psychiatric Neurophysiology Mobile: ++41 76 570 28 00
University Hospital of Clinical Psychiatry Fax: ++41 31 930 99 61
Waldau lehmann at puk.unibe.ch
CH-3000 Bern 60 http://www.puk.unibe.ch/cl/pn_ni_cv_cl.html
2002 Nov 28
3
Running R away from windows (to Linux)
...Bl? str?ket 7, v?n 3
SE 413 45 G?teborg
Sverige
Tlf. +46 (031) 34 244 14 (office) NYTT!
Tlf. +46 (031) 34 212 83 (laboratory)
Tlf. +46 0709 / 7 212 83 (mobil)
Fax. +46 (031) 82 81 63
derek.eder at neuro.gu.se
Gothenburg University
Institute of Clinical Neuroscience,
Department of Clinical Neurophysiology
Salhgrenska Hospital SU/SS
SE 413 45 G?teborg
Sweden
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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(in the "b...
2005 Apr 21
2
apply vs sapply vs loop - lm() call appl(y)ied on array
...m[2:4])))
z <- sapply(split(as.vector(Y), fac), FUN = function(x)
unlist(summary(lm(x ~ X)))$r.squared)
dim(z) <- d.dim[2:4]
date()
## ------------------------------------------------------
--
Christoph Lehmann Phone: ++41 31 930 93 83
Department of Psychiatric Neurophysiology Mobile: ++41 76 570 28 00
University Hospital of Clinical Psychiatry Fax: ++41 31 930 99 61
Waldau lehmann at puk.unibe.ch
CH-3000 Bern 60 http://www.puk.unibe.ch/cl/pn_ni_cv_cl_04.html
______________________________________________
R-help...
2003 Feb 22
4
faraway tutorial: cryptic command to newbie
...library, using the
library() command, even though I specified the path, .. do I need to put
library files into a certain directory? I always got an error: Error in
library(faraway) : There is no package called `faraway'
Thanks a lot
christoph
--
Christoph Lehmann
Department of Psychiatric Neurophysiology
University Hospital of Clinical Psychiatry
Waldau
CH-3000 Bern 60
Switzerland
Phone: ++41 31 930 93 83
Mobile: ++41 31 570 28 00
Fax: ++41 31 930 99 61
Email: lehmann at puk.unibe.ch
Web: http://www.puk.unibe.ch/cl/pn_ni_cv_cl.html
2003 Feb 26
1
plot as .ps file: where are the axes and labels gone
...quot;Fitted
Response",ylab="Studentized Residuals")
unfortunately, I cannot find the axes and labels in the .ps anymore.
where are they gone? how to fix it?
thanks a lot
christoph
--
Christoph Lehmann Phone: ++41 31 930 93 83
Department of Psychiatric Neurophysiology Mobile: ++41 31 570 28 00
University Hospital of Clinical Psychiatry Fax: ++41 31 930 99 61
Waldau lehmann at puk.unibe.ch
CH-3000 Bern 60 http://www.puk.unibe.ch/cl/pn_ni_cv_cl.html
2002 Sep 06
1
Scope problems - passing an argument from one function to another (LME) within
...et SS/SU
Bl? straket 7, v?n 3
SE 413 45 G?teborg
Sverige
Tlf. +46 (031) 34 2-6139 (office)
Tlf. +46 (031) 34 2-1283 (laboratory)
Tlf. +46 0709 / 7 2-1283 (mobil)
Fax. +46 (031) 82 81 63
derek.eder at neuro.gu.se
Gothenburg University
Institute of Clinical Neuroscience,
Department of Clinical Neurophysiology
Salhgrenska Hospital SU/SS
SE 413 45 G?teborg
Sweden
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "bo...
2004 Sep 23
0
nnet and weights: error analysis using V&R example
...Christoph
###
Coordinates:
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 1
minor 9.1
year 2004
month 06
day 21
language R
--
Christoph Lehmann Phone: ++41 31 930 93 83
Department of Psychiatric Neurophysiology Mobile: ++41 76 570 28 00
University Hospital of Clinical Psychiatry Fax: ++41 31 930 99 61
Waldau lehmann at puk.unibe.ch
CH-3000 Bern 60 http://www.puk.unibe.ch/cl/pn_ni_cv_cl_03.html
2004 Sep 23
0
nnet with weights parameter: odd error
...-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 1
minor 9.1
year 2004
month 06
day 21
language R
########
Thanks a lot
Best regards
Christoph
--
Christoph Lehmann Phone: ++41 31 930 93 83
Department of Psychiatric Neurophysiology Mobile: ++41 76 570 28 00
University Hospital of Clinical Psychiatry Fax: ++41 31 930 99 61
Waldau lehmann at puk.unibe.ch
CH-3000 Bern 60 http://www.puk.unibe.ch/cl/pn_ni_cv_cl_03.html
2002 Nov 29
2
Regular Expressionsionism
...Bl? str?ket 7, v?n 3
SE 413 45 G?teborg
Sverige
Tlf. +46 (031) 34 244 14 (office) NYTT!
Tlf. +46 (031) 34 212 83 (laboratory)
Tlf. +46 0709 / 7 212 83 (mobil)
Fax. +46 (031) 82 81 63
derek.eder at neuro.gu.se
Gothenburg University
Institute of Clinical Neuroscience,
Department of Clinical Neurophysiology
Salhgrenska Hospital SU/SS
SE 413 45 G?teborg
Sweden
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "b...
2002 Sep 27
3
? Exact pattern matching in GREP ?
...U
Bl? straket 7, v?n 3
SE 413 45 G?teborg
Sverige
Tlf. +46 (031) 34 244 14 (office) NYT!
Tlf. +46 (031) 34 212 83 (laboratory)
Tlf. +46 0709 / 7 212 83 (mobil)
Fax. +46 (031) 82 81 63
derek.eder at neuro.gu.se
Gothenburg University
Institute of Clinical Neuroscience,
Department of Clinical Neurophysiology
Salhgrenska Hospital SU/SS
SE 413 45 G?teborg
Sweden
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "b...
2004 Mar 30
1
classification with nnet: handling unequal class sizes
I hope this question is adequate for this list
I use the nnet code from V&R p. 348: The very nice and general function
CVnn2() to choose the number of hidden units and the amount of weight
decay by an inner cross-validation- with a slight modification to use it
for classification (see below).
My data has 2 classes with unequal size: 45 observations for classI and
116 obs. for classII
With