23 research outputs found
Complexity Synchronization in Emergent Intelligence
In this work, we use a simple multi-agent-based model (MABM), implementing
selfish algorithm (SA) agents, to create an adaptive environment and show,
using modified diffusion entropy analysis (MDEA), that the mutual-adaptive
interaction between the parts of such a network manifests complexity
synchronization (CS). CS has been experimentally shown to exist among
organ-networks (ONs) of the brain (neurophysiology), lungs (respiration), and
heart (cardiovascular reactivity) and to be explained theoretically as a
synchronization of the multifractal scaling parameters characterizing each time
series. Herein, we find the same kind of CS in the emergent intelligence (i.e.,
without macroscopic control and based on self-interest) between two groups of
agents playing an anti-coordination game, thereby suggesting the potential for
the same CS in real-world social phenomena and in human-machine interactions.Comment: 28 pages, 12 Figure
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Temporal complexity measure of reaction time series: Operational versus event time
Article describes how detrended fluctuation analysis (DFA) is a well-established method to evaluate scaling indices of time series, which categorize the dynamics of complex systems. The authors propose treating each reaction time as a duration time that changes the representation from operational (trial number) time n to event (temporal) time t, or X(t)
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Complexity synchronization: a measure of interaction between the brain, heart and lungs
Authors of the article address the measurable consequences of the network effect (NE) on time series generated by different parts of the brain, heart, and lung organ-networks (ONs), which are directly related to their inter-network and intra-network interactions. The authors assert that these same physiologic ONs have been shown to generate crucial event (CE) time series, and herein are shown ,using modified diffusion entropy analysis (MDEA) to have scaling indices with quasiperiodic changes in complexity, as measured by scaling indices, over time
Brain Network Changes in Fatigued Drivers: A Longitudinal Study in a Real-World Environment Based on the Effective Connectivity Analysis and Actigraphy Data
The analysis of neurophysiological changes during driving can clarify the mechanisms of fatigue, considered an important cause of vehicle accidents. The fluctuations in alertness can be investigated as changes in the brain network connections, reflected in the direction and magnitude of the information transferred. Those changes are induced not only by the time on task but also by the quality of sleep. In an unprecedented 5-month longitudinal study, daily sampling actigraphy and EEG data were collected during a sustained-attention driving task within a near-real-world environment. Using a performance index associated with the subjects' reaction times and a predictive score related to the sleep quality, we identify fatigue levels in drivers and investigate the shifts in their effective connectivity in different frequency bands, through the analysis of the dynamical coupling between brain areas. Study results support the hypothesis that combining EEG, behavioral and actigraphy data can reveal new features of the decline in alertness. In addition, the use of directed measures such as the Convergent Cross Mapping can contribute to the development of fatigue countermeasure devices