Title :
Discovery and Application of New Index for Cognitive Psychology
Author :
Oyama-Higa, Mayumi ; Miao, Tiejun
Author_Institution :
Kwansei Gakuin Univ., Nishinomiya
Abstract :
Fingertip pulsations (plethysmograms) were found to obey chaotic dynamics [1]. We applied chaos theory to analysis of the time series of plethysmograms under various human physio-psychological conditions. It found out that the largest Lyapunov exponent of the time series could be used to characterize physio-psychological status. In addition, the Lyapunov index can use as an index of the cognitive psychology. A visual representation method based on constellation graphs was developed to indexing the changes in the largest Lyapunov exponent.
Keywords :
Lyapunov methods; chaos; cognition; graph theory; medical computing; physiology; plethysmography; psychology; time series; Lyapunov exponent index; chaos theory; chaotic dynamics; cognitive psychology; constellation graphs; fingertip pulsations; human physio-psychological condition; plethysmograms; time series; Chaotic communication; Delay effects; Fingers; Humans; Indexing; Plethysmography; Psychology; Pulse measurements; Radiofrequency interference; Time series analysis;
Conference_Titel :
Systems, Man and Cybernetics, 2006. SMC '06. IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
1-4244-0099-6
Electronic_ISBN :
1-4244-0100-3
DOI :
10.1109/ICSMC.2006.385031
