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Paper: PS-1B.29
Session: Poster Session 1B
Location: H Fl├Ąche 1.OG
Session Time: Saturday, September 14, 16:30 - 19:30
Presentation Time:Saturday, September 14, 16:30 - 19:30
Presentation: Poster
Publication: 2019 Conference on Cognitive Computational Neuroscience, 13-16 September 2019, Berlin, Germany
Paper Title: Oscillatory Patterns in Behavioral Responses during a Memory Task
Manuscript:  Click here to view manuscript
License: Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 Unported License.
DOI: https://doi.org/10.32470/CCN.2019.1067-0
Authors: Marije ter Wal, Juan Linde Domingo, Julia Lifanov, Frederic Roux, Luca Kolibius, University of Birmingham, United Kingdom; David Rollings, Vijay Sawlani, Ramesh Chelvarajah, Queen Elizabeth Hospital, United Kingdom; Bernhard Staresina, Simon Hanslmayr, Maria Wimber, University of Birmingham, United Kingdom
Abstract: Computational models propose that memory formation (encoding) and memory retrieval occur at opposite phases of the hippocampal theta rhythm. Such phase locking would predict that memory processes are, effectively, rhythmic themselves. Here, we ask whether rhythmicity of encoding and retrieval is detectable at the level of behavior. We analyzed the behavioral response times from different phases of a memory task and compared them to responses from a visual task. We report that memory-dependent task phases produced detectable oscillations in responses across trials, while memory-independent responses were not oscillatory. Oscillation frequencies centered in the theta frequency range (2-5Hz), in line with previous findings in humans. In addition, we show that the memory task induced phase locking in the same frequency range in hippocampal (intracranial) EEG recordings, providing a mechanistic underpinning for the oscillation in behavioral responses.