Repertoire of timescales in uni – and transmodal regions mediate working memory capacity

• DOI: 10.1016/j.neuroimage.2024.120602
• Publication Date: 2024-04-04T00:47:02Z
• Authors: Angelika Wolman; Yasir Çatal; Philipp Klar; Jason Steffener; Georg Northoff
• Keywords: Dynamics; Dorsolateral prefrontal cortex

Working memory (WM) describes the dynamic process of maintenance and manipulation information over a certain time delay. Neuronally, WM recruits distributed network cortical regions like visual dorsolateral prefrontal cortex as well subcortical hippocampus. How input dynamics subsequent neural impact remains unclear though. To answer this question, we combined analysis behavioral capacity with measuring through task-related power spectrum changes, e.g., median frequency (MF) in functional magnetic resonance imaging (fMRI). We show that processing dynamics, task structure's specific timescale, leads to changes unimodal cortex's corresponding timescale which also relates working capacity. While more transmodal hippocampus its balance across multiple timescales or frequencies. In conclusion, here relevance both different for uni - subject's performance.