States+of+consciousness

States of Consciousness



** Three methods used to study sleep patterns  ** **Electroencephalograph (EEG) encephalo meaning brain –** as discussed in brain research methods. Used to determine brain wave activity. This led to researchers distinguishing between the 5 different stages of sleep and the brain waves associated with each. **Electromyograph (EMG) myo meaning muscles –** detects electrical activity of muscles and helps to determine muscle activity during sleep. **Electro-oculogram (EOG) oculo meaning eye –** detects eye movements and activity of eye muscles during sleep. Used to determine between rapid-eye-movement and non-rapid-eye-movement sleep.