Seep/Wake Cycles

Circadian Rhythms are ........... -hour cycles that are part of the body's internal clock, running in the background to carry out essential functions processes. One of the most important and well-known circadian rhythms is the sleep-wake cycle

Sleep varies across species, which species of animal is the only one to willingly delay sleep?

• Human

• Snake

• Opposum

• Elephant

Insufficient sleep has significant health effects such as:

• Cognitive function

• Increased immunity

• Decreased risk of disease

Other functions of sleep are:

• Helping the brain restructure and reorganize, particularly after injury

• Improving the strength and speed of synapses between neurons

• Restoring the capacity to learn

• Decreasing long-term memory

Neurons fire more slowly during sleep.

• True

• False

Sleep can not be reversed easily unlike other states of altered sleep consciousness such as coma or hibernation.

• True

• False

What is an electroencephalogram (EEG)

• A test that uses computers and rotating X-ray machines to create cross-sectional images

• A test that uses magnetic fields and radio waves to produce images of the brain

• A test that measures and records electrical activity in the brain.

In general, larger animals sleep more than smaller animals

• True

• False

Sleep depends on

• Diet

• Physiology/Immunity

• Size

• Predator/Prey

Animals that sleep less have faster metabolism and use energy more quickly than those with slower metabolism.

• True

• False