| Although alcohol can make you drowsy and is in fact a depressant, it can cause a restless sleep and actually may deprive you of needed REM sleep. |
| Sleep is fragmented by frequent arousals and awakenings, resulting in decreased or absent slow-wave and REM sleep. |
| Suppression of motor output to pharyngeal dilator muscles during non-REM and REM sleep promotes airway closure. |
| While most mammals and birds show signs of REM sleep, reptiles and other cold-blooded animals do not. |
| Thus, the model used in this study has important features similar to the neural events during natural REM sleep. |
| Most frightening dreams occur during REM sleep, and most REM-altering disorders and medications affect dreaming. |
