Fig. 3.

Young-adult studies. (A) Wutte et al. (2011): Lower psychophysical thresholds covaried with greater increases (i.e., SDdiff) in BOLD signal variability from rest (SDrest) to task (SDstim). (B) He et al. (2011): BOLD signal variance positively associated with power-law exponents, indicating that higher levels of signal variance closely approximated 1/f signal properties (i.e., when the power-law exponent is ~1). Scatter points represent sample averages for 21 specific regions of brain. The lone outlier represents the hippocampal formation (HC). (C) Heisz et al. (2012): Multi-scale entropy (EEG) increased with greater contextual familiarity with novel face stimuli (top panel), across various time scales and electrodes (bottom panels).