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- 1. Delta (0.5-4 Hz):
- Increasing Delta Amplitude:
- Sleepiness or drowsiness.
- Potential for increased confusion in certain populations, such as individuals with dementia.
- Decreasing Delta Amplitude:
- Difficulty in achieving deep sleep or restorative sleep.
- 2. Theta (4-8 Hz):
- Increasing Theta Amplitude:
- Increased daydreaming or spaciness.
- Reduced focus and attention during waking hours.
- Decreasing Theta Amplitude:
- Potential for reduced creativity and intuition.
- Difficulty relaxing or winding down.
- 3. Alpha (8-12 Hz):
- Increasing Alpha Amplitude:
- Relaxation and calmness, which is usually desired.
- However, excessive increase may lead to a detached or disconnected feeling.
- Decreasing Alpha Amplitude:
- Potential for increased anxiety or stress.
- Difficulty in achieving a relaxed state.
- 4. Low Beta (12-15 Hz) or Sensorimotor Rhythm (SMR):
- Increasing Low Beta/SMR Amplitude:
- Improved attention and reduced hyperactivity.
- However, excessive increase may lead to a rigid or over-controlled state.
- Decreasing Low Beta/SMR Amplitude:
- Increased distractibility.
- Potential for increased hyperactivity.
- 5. Beta (15-30 Hz):
- Increasing Beta Amplitude:
- Improved alertness and cognitive processing.
- However, excessive increase may lead to anxiety, irritability, or insomnia.
- Decreasing Beta Amplitude:
- Reduced anxiety.
- However, excessive decrease may lead to cognitive sluggishness or fatigue.
- 6. High Beta (20-30 Hz) or Gamma (30-40 Hz):
- Increasing High Beta/Gamma Amplitude:
- Potential for enhanced mental clarity and perception.
- However, excessive increase may lead to over-arousal, anxiety, or insomnia.
- Decreasing High Beta/Gamma Amplitude:
- Reduced anxiety or over-arousal.
- However, excessive decrease may lead to reduced mental clarity or perception.
- 7. Mu (8-13 Hz):
- Modulating Mu Amplitude:
- Changes in Mu rhythm may impact motor neuron activity.
- Potential impacts on motor skills or coordination.
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