Theta waves appear during learning, memory acquisition, intuition, nightmares, and during emotional display. These brainwaves are seen most often in dream sleep and also appear together with the delta waves in deep meditation. Delta waves have been shown to decrease across the lifespan and especially in the older adults by which time deep sleep and delta waves may be entirely absent. Delta wave activity is highest in infants and is the predominant brain wave in infants. Researchers note that people with health issues do better in this state, indicating the importance of deep sleep to the healing process. The presence of delta waves indicates that the individual is no longer influenced by external impressions. These brainwaves are low frequency, high amplitude, deeply penetrating, slow brainwaves that are generated during deep meditation and dreamless sleep. The list of brainwaves includes: Delta Waves
While these are broad descriptions, there are brainwaves that are far more complex and reflecting various aspects of individuality. Fast brainwave patterns are seen when an individual is alert, fast paced and generally in a hyper-moody behavior. Slower brainwave patterns indicate that the individual is tired, fatigued, sluggish, slow, or dreamy. Thus, our brainwaves change according to our behavior and the emotions that we display. Brainwaves are functionally characterized as bandwidths and range from slow to fast, loud to subtle and simple to complex. These electrochemical signals-also called brainwaves-can be detected by placing sensitive sensors on the head/scalp. Neurons communicate through electrochemical signals that are the basis for motor functions, thoughts, emotions, and behavior.
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