Brain dynamics, psychophysiological uncertainty and behavioral learning.

The present paper takes a first step toward the integration of recent findings on brain dynamics and learning into established fields of psychophysiological science. Leading-edge studies of brain dynamics have shown that the brain manifests an inherent variability and that, when new stimuli (i.e., "problems") are presented to the organism, brain chaos increases. Similarly, many previous studies using a wide variety of physiological and behavioral measures have shown that "psychophysiological uncertainty" is associated with novel stimuli, novice behavioral performance, and new stimulus-stimulus and response-stimulus contingencies. Such uncertainty may ultimately be resolved through some form of learning. Along with the general changes in physiological and behavioral activity, increases in brain chaos may usher the organism into an exploratory mode which serves as a catalyst for learning.