Quantified Sleep: Measuring sleep quality with Sleep as Android
Sleep anatomy etc.
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Transcript of Sleep anatomy etc.
SLEEP
BIOLOGICAL CLOCKS Circadian rhythms – daily
cycles of ~ 24 hours Pineal gland regulation –
releases melatonin Suprachiasmatic Nucleus
(SCN) acts as a biological clock Found in the hypothalamus Just above the optic chiasm Receives info from the retina
Retinohypothalamic pathway
GABA released from the hypothalamus shuts down arousal systems
RETICULAR ACTIVATING SYSTEM
RAS is responsible for sleep/wake behavior and arousal
Sensory systems RAS Cortex
Cortex can stimulate RAS suggesting wakefulness can be consciously maintained
ANATOMY OF DREAMING During REM Sleep
ACTIVEReticular formationThalamusHypothalamusAmygdala & HippocampusVisual Cortex
INACTIVEParietal CortexPrefrontal Cortex
SLEEP IN ANIMALS
Sleep is risky! Why is sleep
important? Adaptation
Energy conservation Predator vs. prey
WHAT DOES SLEEP DO FOR US? Restoration and repair, maintaining
homeostasisSleep deprivation studies show poor
cognition and physiological consequences MEMORY!!!
Activation during REM sleep