Fig. 2: U-shape/quadratic associations between sleep duration and cognitive performance.
From: The interplay between genomic copy number variants, sleep, and cognition in the general population
Fitted curves of the Quadratic model associating cognition and sleep duration (dark line). The light line represents the GAM model. The dotted vertical line indicates the vertex of the parabola. a Relationship between general cognition aggregated across visits and sleep duration (self-reported on the left and accelerometer on the right). b Relationship between executive functioning measured by the trail-making task administered in person and online and self-reported sleep duration (self-reported on the left and accelerometer on the right). c Relationship between executive functioning measured by the tower rearranging task administered in person and self-reported sleep duration (Note: this relationship was not significant with accelerometer-derived sleep duration). Blue = General cognitive ability, Green = Trail making task, Purple = Tower task. X-axis: durations are in hours (first line) and z-scored duration (second line). Y-axis: z-scored cognitive ability.
