Fig. 3: Effect size (Pearson’s r) between change (Post1 – Pre) in regional brain volume and average sleep, exercise, self-reported arousal measures, and cognitive performance during the winter-over.
From: Transient gray matter decline during antarctic isolation: Roles of sleep, exercise, and cognition

Cells in the table are labeled by positive (green) and negative (red) associations between change in brain volume and average behavior/performance. Positive correlation coefficients indicate that high values in the behavior/performance domain were associated with gray matter volume preservation, whereas negative correlation coefficients indicate high values in the behavior/performance domain were associated with gray matter volume loss. Cognition Tasks: PVT Psychomotor Vigilance Test, BART Balloon Analog Risk Test, DSST Digit Symbol Substitution Test, MRT Matrix Reasoning Test, ERT Emotion Recognition Test, LOT Line Orientation Test, AM Abstract Matching Test, NBCK N-back Working Memory Test, VOLT Visual Object Learning Test, MP Motor Praxis Test.