Biological rhythms of life Paderewski International School 1m

What the biological rhythms of life are?

Biological rhythms of life= BioRhythms

Types of BioRhythms

Circadian Rhythm

Superchiasmatic Nucleus(SCN)

SCN - master clock

Melatonin

Melatonin

Experiment 1 Experiment 2

How Your Brain's “Internal Clock” Works?

Infradian rhythms

Occur less than once every day ex. the menstrual cycle

Or as a result of seasonal changes ex. migration and hibernation (circannual rhythms).

Ultradian rhythms

What is the Ultradian rhythm?An ultradian rhythm is any biological process that displays an

endogenous entrainable oscillation of less than 24 hours. When we use this term we are referring to the 90-120 minute brain wave frequency cycles that occur when we are both awake and asleep.

Other ultradian cyclings of the body• Blood circulation• Blinking• Pulse• Hormonal release• Heart rate• Thermoregulation• Urination• Bowel activity• Nostril dilation• Appetite• Mood states

Appetite

Corticotropin-releasing hormone Neuropeptide Y

Mood states• Bipolar disorder cycle• Four or more mood episodes in one year• Cycles shorter than 24 hours.

Ultradian Shift• Ultradian (or BRAC) Shift is a name for the phenomena where a person’s ultradian

rhythm shifts forward as they stay awake longer

• get tired after 2.25 – 2.75 hours

• more wild and unpredictable