Zeitgeber- The stimulus that resets the circadian rhythm, “time-givers.”
Jetlag- A disruption of circadian rhythms due to crossing time zones
Evening people: owls: : morning people: larks
Melatonin-Hormone produces by pineal gland and regulates sleep.
Locus Coerulus-It is a small structure in the pons, is usually inactive, especially during sleep, but it emits bursts of impulses in response to meaningful events, especially those that produce emotional arousal
Pontomesencephalon- Releases neurotransmitters like GABA for sleep and acetylcholine, glutamate, or dopamine for wakefulness, situated within the brainstem encompassing both the midbrain and pons. Increases cortical arousal. Maintains arousal during wakefulness and increases it in response to new or challenging tasks
Basal Forebrain- An area near the hypothalamus that regulates wakefulness. Cells in this structure release acetylcholine, which stimulates wakefulness-promoting cells and influences the thalamus and cerebral cortex.
Relaxed/ awake- Stage of sleep with fast brain waves.
Temperature Regulation- body’s ability to maintain a stable internal temperature through processes like sweating or shivering
Homeostasis-Maintain stable conditions within the body.
Chronic Stress- A consistent sense of feeling pressured and overwhelmed over a long-period of time.
Poikilothermic- from greek root meaning "varied heat"
Vasopressin- It is also known as Antidiuretic Hormone
OVLT- receives input from receptors in the brain itself and from receptors in the digestive tract, enabling the brain to anticipate an osmotic need before the rest of the body experiences it.
Supraoptic Nucleus & PVN- Control the rate at which the posterior pituitary releases vasopressin.