Final answer:
Beta waves are a type of brainwave dominant during wakefulness with a frequency of 13-30 Hz and very low amplitude. They signify alertness and are more variable in comparison to the alpha and theta waves observed during sleep. Researchers utilize the distinct properties of brainwaves like beta to study and understand sleep patterns.
Step-by-step explanation:
The beta wave is a type of brainwave characteristic during wakefulness and is reflected in EEG recordings. Beta waves have a frequency range of 13-30 Hz, indicating that there are 13 to 30 cycles of the wave per second. These waves possess a very low amplitude, which represents the height of the waves, suggesting that the electrical activity is subtle.
During periods of alert consciousness, problem-solving, and decision making, beta waves are prominent and demonstrate more variability compared to brainwaves observed in sleep stages, such as alpha and theta waves. In contrast, alpha waves, typically present during the early part of non-REM stage 1 sleep, have a frequency of 8-12 Hz and higher amplitude than beta waves.
During sleep, the brain transitions through various stages characterized by differing brainwave patterns. Stage 1 sleep can be easily disrupted, and upon waking, an individual may feel as if they had not been asleep at all. Knowing the differences between these brain waves, such as beta, alpha, and theta, is essential for researchers studying sleep patterns, especially in individuals with sleep disorders.