I am currently Principal Investigator for the DFG-funded project (GEPRIS) looking at the way memory is processed in people with PTSD, using EEG and tACS to examine the neurophysiological correlates of contextual memory processing. Memory dysfunction is a cardinal impairment in PTSD. Memory tests of people with PTSD typically show fragmentation and overgeneralization of autobiographical memory content, as well as impairments in working memory and intrusions, where the sensory aspect of a memory is not integrated into the overall autobiographical narrative. EEG studies indicate a role of neuronal oscillations in synchronizing different elements of memory in order to create complex engrams, and a noisier or less coordinated signal could drive these contextual impairments in memory formation and recall. To test this, we not only test aspects of memory performance and their relation to EEG oscillations, but also use rhythmic external stimulation (transcranial alternating current stimulation, tACS) to test whether memory function can be improved by the areas with dysfunctional oscillatory activity. We also implement multivariate pattern analysis (MVPA) in order to provide a more detailed picture of the effects of stress-related information on the individual.