Asymmetry and basic pathways in sleep-stage transitions

作者：Lo Chung Chuan^*; Bartsch Ronny P; Ivanov Plamen Ch

来源：EPL, 2013, 102(1): 10008.

DOI：10.1209/0295-5075/102/10008

We study dynamical aspects of sleep micro-architecture. We find that sleep dynamics exhibits a high degree of asymmetry, and that the entire class of sleep-stage transition pathways underlying the complexity of sleep dynamics throughout the night can I be characterized by two independent asymmetric transition paths. These basic pathways remain stable under sleep disorders, even though the degree of asymmetry is significantly reduced. Our findings demonstrate an intriguing temporal organization in sleep micro-architecture at short time scales that is typical for physical systems exhibiting self-organized criticality (SOC), and indicates nonequilibrium critical dynamics in brain activity during sleep.

• 出版日期2013-4
• 单位清华大学