The Brain's Dark Energy

This is the authors' abstract. We don't add key points for this paper.

Since the 19th century, and possibly longer, two perspectives on brain functions have existed (1). One view posits that the brain is primarily reflexive, driven by the momentary demands of the environment; the other, that the brain's operations are mainly intrinsic, involving the maintenance of information for interpreting, responding to, and even predicting environmental demands. While neither view is dominant, the former has motivated most neuroscience research. But technological advances, particularly in neuroimaging, have provoked a reassessment of these two perspectives.