Processing Speed
Outcome
Cns
How fast simple mental operations run. Included because it is the measure that moves with sleep debt, so it separates a genuine cognitive effect from an effect of being tired.
Relationships
2 connectionsProcessing Speed stimulates
Iron
Carries oxygen in haemoglobin and sits in the active site of several enzymes. Absorption is the bottleneck, not intake, which is why so much of the absorption layer points here.
Sleep Quality
How restorative sleep is, as opposed to how much of it there is. Deep and REM sleep are where growth hormone is released and where memory is consolidated, so this is the measure that connects a sleep effect to a memory effect. A person can sleep eight hours and get almost none of this.