Date(s) - 25/10/2017
16:00 - 18:00
Dr. Marie-Christin Fellner (Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University of Bochum) will give a talk on the topic ‚Spectral fingerprints of memory encoding: tracking item- and material-specific processing during memory Formation‘:
In the last decade brain oscillatory activity has gained more and more popularity as a correlate of activity in neural networks during cognition. Changes of oscillatory activity in different frequency bands have been linked to various processing steps during complex cognitive tasks. In my talk, I present projects focusing on how brain oscillations are related to the Transformation of perception to a durable memory trace and how brain oscillations are involved in voluntary downregulation of item specific representations during encoding. Contrasting correlates of
successful memory formation in MEG and iEEG depending on material reveals that oscillatory power changes in the theta and gamma frequency range track memory formation irrespective of material, whereas decreases in alpha/beta power are solely tracking memory formation for semantic and conceptual material. Furthermore, studying active inhibition and rehearsal processes during memory encoding shows that alpha power increases precede the voluntary downregulation of item specific representations during memory formation and thereby lead to active forgetting of memory representations. Together these findings illustrate how oscillatory power changes index various aspects of memory encoding and might yield to a more functional understanding of memory formation.
Marie-Christin Fellner is currently a postdoc at the Institute of Cognitive Neuroscience at the Ruhr University of Bochum in the group of Nikolai Axmacher. Prior she completed her PhD at University of Konstanz under the supervision of Simon Hanslmayr. Her research focuses on the oscillatory correlates of human cognition, especially long term memory and working Memory processes, using a multi-modal approach including M/EEG, iEEG and EEG-fMRI.
The talk will take place on Wednesday, 25 October, in the lecture hall (3. OG).