# Posters SFN

On SFN Neuroscience 2015 in Chicago I presented two posters.

One was about optimizing 7T fMRI in the basal ganglia during the stop signal task, the other one about modelling the HRF as to link its shape not computational cognitive models.

# Subcortical cocktail problem paper published online

I’m delighted that our paper on the problems of disentangling the BOLD signals from the subtantia nigra and subthalamic nucleus has been published online.

You can find it here (pdf).

(Also mentioned in a Tweet by NeuroSkeptic: “Subversive”!)

# In Limbo paper accepted

My paper with EJ Wagenmakers, Lourens Waldorp and Birte Forstmann on the ‘in limbo approach’ has been accepted in PLOS ONE. You can download the latest version here.

# Fit T2* values using Python

For a project I needed T2*-values for different tissues. These can be estimated by using T2-weighted images with different echo times (TEs). Some free tools exist like the Mipav-based CBS-tools and the web-based MRI Toolbox, but the Mipav toolkit is rather unstable (Java, ...) and needs everything to be in a very specific format. And desptite that I think web-based neuroimaging analysis is very cool, the MRI toolbox is not very flexible yet (you have to manually enter the measurements). Therefore, I set out to find out what this T2(*)-fitting actually does. Basically it fits the following signal decay function: $$S(TE) = S_0 e^{-TE/T2(*)}$$   Continue reading

# In Limbo poster

Last week I presented my poster “An antidote to the imager’s fallacy, or how to identify brain areas that are in limbo” at the Organization for Human Brain Mapping conference in Hamburg. A wonderful week with many inspiring talks and meetings. You can download my poster here.

# Iron Gradient Paper in Human Brain Mapping

My paper on an iron gradient in the Subthalamic Nucleus has been published in Human Brain Mapping.

de Hollander, G., Keuken, M. C., Bazin, P.-L., Weiss, M., Neumann, J., Reimann, K., Wähnert, M., Turner, R., Forstmann, B. U. and Schäfer, A. (2014), A gradual increase of iron toward the medial-inferior tip of the subthalamic nucleus. Hum. Brain Mapp.. doi: 10.1002/hbm.22485 (pdf)

# Python in Cognitive Neuroscience workshop

I gave a workshop on using Python for data analysis in Cognitive Neuroscience.

# Talk about In Limbo at SFN 2013

I will give the talk about the In Limbo project this afternoon (11 november 2013), San Diego time, 14:15 at meeting room 7B. You can find the slides here.

Code can be found here.

# Poster about iron gradients in the Subthalamic Nucleus at SFN 2013

My poster for SFN 2013 is ready. You can find it here. I will present it on sunday 10 november at 8am in hall BH.