There Are Two Basic Types of Sleep: REM Sleep and NREM

question 424

True/False

There are two basic types of sleep: REM sleep and NREM sleep.

---

Definitions:

Place Theory

A theory in hearing that suggests that our perception of sound depends on where each component frequency produces vibrations along the basilar membrane of the inner ear.

Frequency Theory

A theory in the study of hearing that suggests pitch is determined by the rate at which nerve impulses are fired in response to sound vibrations.

High Pitches

Sounds that have a high frequency, typically perceived as shrill or squeaky, easily distinguishable from lower pitch sounds.

Low-Frequency

Low-frequency pertains to events, signals, or items occurring or operating at a relatively small number of cycles or occurrences per unit of time.