Neuroscience 2021 04 13;460:69-87. Epub 2021 Feb 13.
Institute of Cognitive Neuroscience, National Central University, Taoyuan, Taiwan; Cognitive Intelligence and Precision Healthcare Center, National Central University, Taoyuan, Taiwan; Brain Research Center, College of Health Sciences and Technology, National Central University, Taoyuan, Taiwan; Department of Psychology, Kaohsiung Medical University, Kaohsiung, Taiwan.
Visual working memory (VWM) relies on sustained neural activities that code information via various oscillatory frequencies. Previous studies, however, have emphasized time-frequency power changes, while overlooking the possibility that rhythmic amplitude variations can also code frequency-specific VWM information in a completely different dimension. Here, we employed the recently-developed Holo-Hilbert spectral analysis to characterize such nonlinear amplitude modulation(s) (AM) underlying VWM in the frontoparietal systems. Read More