Sleep and methods for studying consciousness

1. Lesson 2: Sleep and
methods of studying
consciousness

2. sleep is a regularly occurring altered state of consciousness
that typically occurs spontaneously and is primarily
characterised by a loss of conscious awareness
sleep is a regularly occurring altered state of consciousness
that typically occurs spontaneously and is primarily
characterised by a loss of conscious awareness

3. Beta
• High frequency, and low amplitude
• Associated with normal waking
consciousness and focused attention

4. Alpha waves
• High frequency, but slower than beta
• Low amplitude, but slightly higher than
Beta
• Associated with relaxed mediative state

5. Theta waves
• Medium frequency, slower than alpha and
beta
• Mixture of high and low amplitude waves
• Associated with early or light sleep

6. Delta waves
• Lowest frequency
• Highest amplitude
• Associated with deepest stages of sleep