2.1. 1 Brain Waves
| Frequency band | Frequency | Brain states |
|---|---|---|
| Beta (β) | 12–35 Hz | Anxiety dominant, active, external attention, relaxed |
| Alpha (α) | 8–12 Hz | Very relaxed, passive attention |
| Theta (θ) | 4–8 Hz | Deeply relaxed, inward focused |
| Delta (δ) | 0.5–4 Hz | Sleep |
Likewise, can you have delta waves while awake?
Delta. These brain waves are the slowest brainwaves and are present primarily during sleep or when in a non-aroused state. They should not be excessive during an awake state. If seen in an awake state, theses waves may suggest issues related to depression, closed-head injury and learning disorders.
In respect to this, what are alpha and beta waves?
Alpha waves, which measure between 8 and 12 Hz, occur when people feel relaxed and when the brain is in an idle state without concentrating on anything. Beta waves, which measure between 12 and 30 Hz, are the waves that occur during most conscious, waking states.
What are alpha beta and theta brain waves?
The raw EEG has usually been described in terms of frequency bands: Gamma greater than 30(Hz) BETA (13-30Hz), ALPHA (8-12 Hz), THETA (4-8 Hz), and DELTA(less than 4 Hz). For example: Our brain uses 13Hz (high alpha or low beta) for “active” intelligence.
What are the 4 types of brain waves?
The classic names of these EEG bands are delta, theta, alpha, beta, and gamma. They are measured in cycles per second or hertz (Hz). Delta brainwaves (1-3 Hz) are the slowest, highest amplitude brain waves, and are what we experience when we are asleep.
What is gamma waves in the brain?
Gamma brain waves have the highest frequency among all brain waves. They are associated with high levels of thought and focus. They can have different effects depending on their levels in your brain: If your brain produces high levels of gamma waves, you tend to be happier and more receptive.
What type of brain waves are present when we are awake quizlet?
A stage when a person is awake, EEG patterns exhibit two types of waves: beta and alpha.