Measuring entropy in functional neuroscience: pathophysiological and clinical applications

Chen-Chih Chung,1 Jiunn-Horng Kang,2,3 Chaur-Jong Hu,11Department of Neurology, Shuang Ho Hospital, College of Medicine, Taipei Medical University, New Taipei, 2Department of Physical Medicine and Rehabilitation, Taipei Medical University Hospital, 3Department of Physical Medicine and Rehabilitation, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, Republic of ChinaAbstract: A biological system obtains information, reacts to stimuli, and modifies its behavior to adapt to the environment via complex control systems. A healthy system is expected to adequately adapt to a variety of changes. Physiological signals obtained from a healthy individual should contain rich information and complex behaviors. Entropy-derived measures have been used to access the complexity of the physiological signals. Aging or diseased status usually shows reduced entropy values and loss of complexity within the dynamics of physiological output. In…


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