Re: [Openeeg-list] EDF to ASCII and ASCII to EDF

[Barkan, H. M.D., Ph.D. <Bar...@ma...>]

THANK YOU Nathan - great links and very inspiring. i may get the nerve =
and email B. Kemp unless Chris V. just has mercy on us and adds the =
ASCII input option to BBay.=20

> I presume you're still looking=20
  for a solution?

well,yes.  i will have some time to myself sometime next year (academic) =
meaning for research, and that is when i intend to dig into this fun =
stuff. right now i can only look and salivate.=20

>Possibly this is too obvious to mention, but does the maker of the=20
  equipment with which you captured your ESES & CSWS data offer=20
  any format conversion utility?  Or can you press another =
manufacturer's =20
  software into service for the purpose?  =20

no no no. alas. i am lucky and grateful that i can export files at all. =
some commercial software does not even allow that.

>  You probably have Grass's=20
  'TWin' software accessible to you somewhere -=20

my previous dwelling had Grass/Telefactor - BTW the Telefactor was MUCH =
BETTER before they merged with Grass and went down the drain, as far as =
quality is concerned  - so yes am intimately familiar so to speak with =
TwinLook, Twin, etc. no go for conversion there. ASCII all the way.  =
they may have EDF but they do not sell this version to us, and htey are =
very closed-source.=20

>I know the software can write both=20
  EDF and ascii.  But if it can write ascii ... does that mean it would=20
  probably be able to read back the ascii it writes, too; i.e., is there =
=20
  an ascii import utility?

not that i recall. i no longer work with Grass-Telefactor.
=20
>Or perhaps your Sleep Medicine people would=20
  know if their software has an "ascii in, EDF out" utility?

no, no. they don't. i checked already. was looking forward to BBaying.=20

>On a related note, none of your sample data came from a Nihon=20
   Kohden EEG, I suppose?  I presume you saw the just-released=20
   ( 0.43 21 march 2007 ) version of software to convert Nihon=20
   Kohden format data to EDF(+) at http://www.teuniz.net/edf/ ?

no, dunno at all the Kohden. sorry..... all of my data are either =
Grass-Tele or XLTEK-derived.


=20
>Of course you also saw the tutorial that Jesus Olivan put together=20
   "Applying PhysioNet tools to manage neurophysiological signals"
    that demonstrates how to convert an ascii EKG signal to EDF at=20
    http://www.neurotraces.com/InPractice/ECG/ECG.html, right?

i glimpsed. but am lazy and hoping for someone ( Chris) to just =
magically create the ASCII option... lazy..

>The moderated EDF group on Yahoo could be of help:

THANKS.
those groups are very quiet though. have tried a couple: quiet.=20

>A final thought, perhaps impracticable ... but w/b very simple:
Ask to borrow some sample data that comprises ESES (electrographic=20
   status epilepticus of sleep) and CSWS (continuous spike wave sleep=20
   activity) from one of your European colleagues, e.g. Kemp or Olivan,
   who are into epilepsy research too.  Olivan seemed something like=20
   eager to help others, I thought, based on my perusal of his website,=20
   and I got a similar feel from reading Kemp's site. The academic=20
   equivalent of going next door to borrow a cup of sugar?=20

YES, it is a sweet image. a cup of sugar.=20
<smile>
i have more data than i can ever process though. ESES and all. i want to =
use MY data not theirs. i KNOW those patients, i treat them, i deal with =
them, i don't want some anonymous data..... even if it identical! is =
this stupid? maybe is.

i am glad Joerg has extended the discussion a little so i don't feel =
overguilty blabbing this.

>Or perhaps ESES and CSWS aren't common enough

you hit the nail on the head there. they are common enough but not =
enough for people to get funding to study it. these poor kids don't pay. =
i hope to change that but this is way presumptious of me. on the other =
hand, there is plenty of overlap with the things you do for the very =
damaged ESES kids and the things you would do for normal adults with =
epilepsy. i sort of "see" Joerg's machine sold at the Mayo store. in the =
year 21whatever. hope he gets the credit if not the money. there are =
potential uses for "personal eeg" no less no more than for BP monitors =
or glucose meters. we just don't know how to use them best. Joerg and =
the folks here are pioneers even if they don't know it.


>I imagine I've made a few "village idiot" suggestions here, and I know
   you probably knew most or all of it, besides.=20

nopes, i did not.

>besides, it's always much    =20
   more fun to make recommendations about how someone else might=20
   do their work than to actually do one's own!=20
  =20
 tell me about it - am constantly procrastinating by watching the list. =
and it's nice. the list feeds one fresh ideas by the day, sometimes by =
the hour. i do feel like a predator a little. of a nice kind :-)

h