Sentences with phrase «delta waves occur»
This period of time during which delta waves occur is often known as deep sleep.
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They also lacked a low frequency burst of brain activity (the delta brain wave) that occurs right at the start of the trial in healthy subjects.
The study also showed that, in control rats, the same delta wave activity occurred in the rat's cerebellum during the timing task and, interestingly, the cerebellar activity preceded the activity in the frontal cortex.
Delta waves (1.5 Hz to 4 Hz), for example, are produced during deep sleep, theta waves (4 Hz to 12 Hz) occur during running and deep meditation, and gamma waves (25 Hz to 100 Hz) are associated with excitement and concentration.
Similar negative effects occur with worsening air pollution — higher levels of ground - level ozone smog and other pollutants that increase with warmer temperatures have been directly linked with increased rates of respiratory and cardiovascular disease — food production and safety — warmer temperatures and varying rainfall patterns mess up staple crop yields and aid the migration and breeding of pests that can devastate crops — flooding — as rising sea levels make coastal areas and densely - populated river deltas more susceptible to storm surges and flooding that result from severe weather — and wildfires, which can be ancillary to increased heat waves and are also responsible for poor air quality (not to mention burning people's homes and crops).