Notger Müller
Prof. Dr. Notger Müller
Group Leader
Leipziger Str. 44
39120  Magdeburg
 +49 391 67-24517

Areas of investigation/research focus

There is growing evidence that effective treatment of dementia should start as early as possible, that is before a large number of nerve cells have died and the patient shows significant clinical symptoms. For such an early diagnosis we today still lack unambiguous biomarkers that could serve as indicators of an impending dementia.

Therefore, our group focuses on searching for such markers. We use new behavioral tests and advanced imaging techniques such as 7 Tesla high-field MRI.

A second focus of our group is on the development of prophylactic therapies such as a combined memory and movement training. It is known that such training can at least delay the signs of dementia. We study how combined cognitive and physical training over a 12-week period affects the memory of subjects with mild cognitive impairment. Thereby, improvements in memory performance and simultaneously an increase in hippocampal volume (key brain structure for the memory) and the functional plasticity of the brain through MRI were shown.

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    In addition, we test for blood flow in vessels (perfusion MRI) and changes in biological markers (nerve growth factors). The aim of the study is to investigate how a training should optimally be set up - is an endurance training or a complex training required for a compensation of the dysfunction? Should this be combined with a cognitive training and should this be focused more on improving the disturbed functions or the compensation by other functions? How important is the social component of such training?

    An understanding of normal brain function is a prerequisite for understanding cognitive disorders. Therefore, a third focus of our group is on attention and working memory processes in healthy individuals. We intend to examine the hypothesis that the individual capacity of the more dopamine-dependent working memory is strongly correlated with the cholinergic-mediated ability to ignore irrelevant information through selective attention. To this end, behavioral (by distractors caused errors) and neurophysiological markers of selection ability (N2pc from EEG / MEG, modulation of fMRI responses in visual cortex) are set in relation to the individual capacity of working memory and its neurophysiological correlates (contralateral delay activity in the EEG / MEG, parietal activation in fMRI).

    In addition to healthy people, also patients with cholinergic and dopaminergic deficits (incipient Alzheimer's or Parkinson's disease) or lesions in brain structures critical for attention filtering and working memory are tested. We have already investigated patients with circumscribed brain damage after stroke and were able to show which brain structures are critical for filtering attention and working memory storage. We also investigate to which extent polymorphisms in genes coding for the cholinergic or dopaminergic system and the structural integrity of the cholinergic basal forebrain or the dopaminergic midbrain can influence selection or memory capacities. Moreover, we test how these capacities can be improved by medications that specifically raise the level of neurotransmitters.

    Cooperation partners of the group:

    • Prof. Dr. Stefan Pollmann, Institute for Psychology, Otto-von-Guericke-University Magdeburg
    • Dr. Dr. Bernhard Baier, Clinic and Out-Patients' Clinic for Neurology, Johannes Gutenberg-University Mainz
    • Prof.  Dr. Jens-Max Hopf, University department of Neurology, Medical Faculty, University Hospital Magdeburg
    • PD Dr. phil. Tino Zähle, University department of Neurology, Medical Faculty, University Hospital Magdeburg
    • Prof. Dr. Anita Hökelmann, Department of Movement Science at the Institute for Sport Science of the Otto-von-Guericke University in Magdeburg
    • Prof. Dr. med. Marianne Dieterich, Department of Neurology with Friedrich-Baur Institute for Nerve and Muscle Diseases hospital of the Ludwig-Maximilians-University (LMU) Munich
    • Dr. Ander Ramos Murguialday, Institute for Medical Psychology and Behavioural Neurobiology, University Tübingen
    • Prof. Dr. Agnes Flöel, Department of Neurology, University Medicine of Greifswald
    • Prof. Yael Netz, Zinman College for Physical Education and Sport Sciences at the Wingate Institute, Israel
    • Prof. Dr. med. Stefanie Schreiber, University department of Neurology, Medical Faculty, University Hospital Magdeburg

    Key Publications

    Schmicker M, Menze I, Koch D, Rumpf U, Müller P, Pelzer L, Müller NG. Decision-making deficits in elderly can be alleviated by attention training. J. Clin. Med. 2019 Jul 29; 8:1131. doi: 10.3390/jcm8081131
    Müller NG, Riemer M, Brandt L, Wolbers T. Repetitive transcranial magnetic stimulation reveals a causal role of the human precuneus in spatial updating. Scientific Reports. 2018 Jul 04; 8 doi: 10.1038/s41598-018-28487-7
    Müller P, Rehfeld K, Schmicker M, Hökelmann A, Dordevic M, Lessmann V, Brigadski T, Kaufmann J, Müller NG. Evolution of neuroplasticity in response to physical activity in old age: The case for dancing. Front Aging Neurosci. 2017 Mar 13; 9 doi: 10.3389/fnagi.2017.00056
    Dordevic M, Müller-Foti A, Müller P, Schmicker M, Kaufmann J, Müller NG. Optimal Cut-Off Value for Locus Coeruleus-to-Pons Intensity Ratio as Clinical Biomarker for Alzheimer´s Disease: A Pilot Study. Journal of Alzheimer´s Disease Reports. 2017 Nov 13; 1:159-167. doi: 10.3233/ADR-170021
    Schmicker M, Schwefel M, Vellage AK, Müller NG. Training of attentional filtering, but not of memory storage, enhances working memory efficiency by strengthening the neuronal gatekeeper network. J Cogn Neurosci. 2015 Dec 31; 28:636-42. doi: 10.1162/jocn_a_00922


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