Figure 3From: Evaluation of mental stress by physiological indices derived from finger plethysmographyConceptual scheme of the reconstruction phase from observed nonlinear data using Taken’s embedding method. (A) υ(t) is the dimensional state vector, X, Y and Z represent original data, and T is the time delay. (B) Hypothetical reconstructed attractor in embedding υ(t) into three dimensions.Back to article page