Time-Resolved Aperiodic and Oscillatory Dynamics during Human Visual Memory Encoding
The Journal Club18 Apr 2025

Time-Resolved Aperiodic and Oscillatory Dynamics during Human Visual Memory Encoding

Journal of Neuroscience April 16, 2025

Neural oscillations have been extensively implicated in memory encoding. However, recent advances show that oscillations

are often confounded with aperiodic activity, motivating further investigation of aperiodic dynamics in memory. Here we

analyze a dataset of intracranial human EEG recordings to test the hypothesis that aperiodic activity plays a role in memory,

distinct from oscillations. By leveraging a new approach to time-resolved spectral parameterization, we find event-related

changes in both oscillations and aperiodic activity. Based on our observations, we posit a speculative role for aperiodic activity

in cognition, complementary to that of neural oscillations, in a form of neural communication through aperiodic dynamics.

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