Intrinsic neural timescales relate to the dynamics of infraslow neural waves

• DOI: 10.1016/j.neuroimage.2023.120482
• Publication Date: 2023-12-02T16:16:54Z
• Authors: Yujia Ao; Yasir Catal; Stephan Lechner; Jingyu Hua; Georg Northoff
• Keywords: Dynamics; Trough (economics); Neural Activity; Human brain

The human brain is a highly dynamic organ that operates across variety of timescales, the intrinsic neural timescales (INT). In addition to INT, waves featured by its phase-related processes including their cycles with peak/trough and rise/fall play key role in shaping brain's activity. However, relationship between ongoing wave dynamics INT remains yet unclear. this study, we utilized functional magnetic resonance imaging (fMRI) rest task data from Human Connectome Project (HCP) investigate infraslow [as measured terms speed changes peak frequency (PF)] INT. Our findings reveal that: (i) phase (PF) associated distinct parts cycles, namely higher PF lower rise/fall; (ii) there exists negative correlation such slower relates longer INT; (iii) exposure movie alters both different intact. Collectively, our results demonstrate during states.