[esnr] Re: Call for data

  • From: "Berrie Gerrits" <praktijkgerrits@xxxxxxxxx>
  • To: <esnr@xxxxxxxxxxxxx>
  • Date: Wed, 13 Oct 2004 18:46:03 +0200

Hi Marco,

right now I don;t have any ERP data, this weekend there will be a demonstration 
by Deymed on the ERP software. From that moment on I will collect ERP data. I'm 
willing to share it with you, PROVIDED that future clients approve of it.

I do have QEEG data, under different taskconditions (1 and 2 digit counting, 
reading luod, reading silent, listening, Strrop color/word tests, Raven 
pictures and some stimulation tasks as well: hyperventilation and 
If you need it I will ask clients for permission. But only after I fully 
checked medical -ethical matters.

Met vriendelijke groet/All the best/Ciao,

Berrie Gerrits

Psychologenpraktijk Gerrits
Sloetstraat 14
6524 AS  Nijmegen
Tel: 024-3235053

Neurofeedback en QEEG gecertificeerd (AAPB CR)
BIG geregistreerd (GZ en psychotherapie)

  ----- Original Message ----- 
  From: Marco Congedo 
  To: esnr@xxxxxxxxxxxxx 
  Sent: Wednesday, October 13, 2004 3:39 PM
  Subject: [esnr] Call for data


   I am working on a new method for studying (left/right) hemispheric 
joint-involvements. The major advantage of the approach I am following, as 
compared to usual interhemispheric asymmetry, coherence and phase measures, is 
that the WHOLE hemispheric involvements (patterns of activation) are considered 
simultaneously, and not just an electrode pair at a time.
  The method is based on Matrix Decomposition methods and, possibly, extension 
of Blind Source Separation (Independent Componenet Analysis).

  For the study, I am looking for individual subject data, where each subject 
is involved in, say, two tasks, where the two hemisphere should interact 
differently. Examples are:
  - Reading of words with emotional and non-emotional content
  - Looking at face expressing emotions vs. neutral faces
  - Analytic vs. Spatial tasks 
  - Maniac vs. Depressive phase of Bipolars.

  Preferably, I would like to start analyzing ERP data, since they are shorther 
and cleaner files.
  Also because for ERP data it is possible to extend the method to study the 
interaction of hemispheres with specific time-lags (e.g., study the 
relationship if activity at peaks).

  I cannot offer autorship to the records owner for possible methodological 
papers coming out from this study.
  However I will aknowledge and I will share any insight acquired with the data.
  If then those insights are worth, an applied paper in co-authorship would be 
more than welcome.

  Thank you very much for your attention.

  Marco Congedo, PhD
  (National Institute for Informatics and Automated Research)
  Tel: +33 4 76615409

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