[FieldTrip] Post-Doc Position (2 years) at MPIB Berlin - Personalized Cognitive Neuroscience

[Werkle, Markus]

Dear Colleagues,

within the research area "Cognitive and Neural Dynamics of Memory Across the Lifespan", headed by Myriam Sander and myself, at the Max Planck Institute for Human Development, Berlin, we are looking for a post-doc to work in our group. Please check the attached advertisement for additional information.

The successful candidate will work on a unique data set with intense micro-longitudinal within-person EEG measurements (up to 12 repeated sessions) conducted in the context of a working memory training study. The goal of the project is to develop novel analytical approaches to link cognitive and neural process models on the within-person level.

Please spread the news!

Best,
Markus

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Dr. Markus Werkle-Bergner, Dipl. Psych.
Senior Research Scientist (W2)

Jacobs Foundation Research Fellow 2017-2019

Max Planck Institute for Human Development
Center for Lifespan Psychology

Lentzeallee 94, 14195 Berlin

Tel.: 0049 (0)30 82406 447 Fax.: 0049 (0)30 824 99 39
Mail: werkle at mpib-berlin.mpg.de
http://www.mpib-berlin.mpg.de/en/staff/markus-werkle-bergner
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________________________________________
Von: fieldtrip-bounces at science.ru.nl [fieldtrip-bounces at science.ru.nl]" im Auftrag von "Ta Dinh, Son [son.ta.dinh at tum.de]
Gesendet: Dienstag, 10. Januar 2017 08:20
An: fieldtrip at science.ru.nl
Betreff: [FieldTrip] LCMV beamforming, source.avg.pow is not the power?

Hi Fieldtrippers,

I have been trying to do a source analysis on my (resting-state) data using LCMV beamforming and as part of a sanity check, I wanted to plot the alpha power.

Using ft_sourceanalysis I get a source structure containing avg.pow and intuitively I expected this field to contain the averaged power of the time series. Therefore, I band-passed the data on the sensor level before doing the LCMV source reconstruction.

Surprisingly however, when I used the resulting LCMV spatial filter to construct virtual channels and calculated the alpha power spectrum of the resulting time series using ft_freqanalysis, the average power between these 2 approaches differed by several orders of magnitude over many voxels.

Did I make some conceptual misunderstanding? Are the 2 approaches I used not equivalent? Or does source.avg.pow not contain the average power at all?

Any comments would be greatly appreciated!

Best regards,
Son

Son Ta Dinh, M.Sc.
PhD student in Human Pain Research
Klinikum rechts der Isar
Technische Universität München
Munich, Germany
Phone: +49 89 4140 7664<tel:%2B49%2089%204140%207664>
http://www.painlabmunich.de/

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