Figure 2. Cerebral activations time-locked to sleep spindles and correlation between spindle-related activation and Reasoning abilities. (A) Activations time-locked to sleep spindles during NREM sleep. (B) Spatial correlation maps between activations time-locked to sleep spindles and Reasoning abilities. (C) Overlap between A (red) and B (green), with the conjunction of A and B shown in yellow. Figure credit: Fang, Ray, Owen & Fogel. (2019). Brain activation time-locked to sleep spindles associated with human cognitive abilities. Frontiers in neuroscience, 13. doi: 10.3389/fnins.2019.00046.

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