What is the typical range of frequency for theta waves in adults?

Theta waves are characterized by their frequency range, which is typically associated with light sleep, relaxation, and states of meditation. In adults, theta waves are primarily recognized as oscillations ranging from approximately 4 to 8 Hz. This frequency is distinct from other types of brain waves, such as delta waves, which are lower in frequency and associated with deep sleep, or alpha waves, which range between 8 to 12 Hz and are seen when the eyes are closed but the individual is awake and relaxed.

Understanding the characteristics of theta waves and their frequency range helps in various clinical settings, including the interpretation of electroencephalograms (EEGs) and the assessment of different states of consciousness. This knowledge assists healthcare professionals in identifying and differentiating normal brain functions from abnormalities that may indicate neurological disorders.