All posts by steini

New publications

New publications from AG Stahn in Lancet Neurology, NeuroImage and Frontiers in Neural Circuits:

1.  Using functional magnetic resonance imaging (MRI) we investigated the effects of a high-intensity exercise program during 2 month of strict bed rest. We show that exercise increases neuronal efficiency in the hippocampus and parahippocampus during episodic memory processing after 2 months of immobilization. Our data provide further support for the modulating effects of physical exercise and adverse implications of a sedentary lifestyle and bedridden patients.

Friedl-Werner, A., Brauns, K., Gunga, H.C., Kühn, S. & A.C. Stahn. Exercise-induced changes in brain activity during memory encoding and retrieval after long-term bed rest. NeuroImage 223: 117359, 2020

Access full paper here:

2.  A commentary in Lancet Neurology on the need to understand the neurobehavioral effects for exploratory space mission.
Roberts, D., Stahn, A.C., Seidler, R., Wuyts, F. Towards understanding the effects of spaceflight on the brain. Lancet Neurology, 19(10): 808, 2020

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3.  Spatial updating is a fundamental skill underlying navigation. Spatial updating requires to continuously form and update transient sensorimotor representations about self-to-object relations during locomotion. It is critical fro situational awareness and readiness to act when vision is poor or unreliable such as in extreme situations of firefighters, divers, or astronauts performing extravehicular activities. We here show that different levels gravity other than 1 g impair the spatial updating abilities, and discuss the role of the vestibular system for maintaining this ability.

Stahn, A.C., Riemer, M., Wolbers, T., Friedl-Werner, A., Brauns, K., Besnard, S., Denise, P., Kühn, S., Gunga, H.C. Spatial Updating Depends on Gravity. Frontier in Neural Circuits, 14:20.

Access full paper here:


Podcast by Dr. Eckart von Hirschhausen regarding the danger of heat waves and climate change. (Podcast in German).


Professor Hanns-Christian Gunga – Center for Space Medicine and Extreme Environments Berlin, interviewed by Mariela Milkowa, HR-Info Radio. (Podcast in German).


We have now arrived in Carmacks. Temperatures are at an adequate level around -25°C so that it is neither too warm (so that the trail would get too soft) nor too cold for the athletes.  However, snow is being awaited, which might make the trail more difficult. Nevertheless, several athletes had to abandon the race already.  We are looking forward to see our participants arrive!


Storing all serum samples …


… into liquid Nitrogen.


Arrival in Braeburn.


Our participant Magda with her husband Uwe, resting in Braeburn.


For the fourth time, we are in the wonderful Yukon again to continue our investigation regarding physiological and psychological changes that occur during the extremes of the Yukon Arctic Ultra. This time, the team consists of Dr. Mathias Steinach, Doctoral Candidate Camilla Kienast and Dr. Lea Mascarell Maricic from the Depatment of Psychiatry of the Charité based on our cooperation with Prof. Ströhle. Currently, the baseline measurements are underway with a challenging n=20 participants. The study is again joined by Dr. Robert Coker from the “University of Alaska”, as he provides equipment to allow blood-analysis and to continue this great international scientific collaboration. We want to express our gratitude to the organizers, volunteers and of course our athletes of the Yukon Arctic Ultra 2019!


The “science-squad” of 2019: Dr. Mascarell Maricic, Mrs. Kienast, Dr. Coker and Dr. Steinach.


A “selfie” after baseline measurements are done with our participant Joel from Australia.


Pipetting the valuable serum-samples.


A morning in Whitehorse.


A selfie with our participant Laura from Italy.


Us with our participant Julio “Toto” and his teammate José.


A Social-Game-Test with our participants conducted by Dr. Mascarell Maricic.


Start of the “Yukon Arctic Ultra 2019”, February 3rd at 10:30 a.m. It was a chilling -38°C by the way!

We are looking forward to see our participants along the trail. Stay warm and safe!