Physiological changes of autonomic nervous system occur during non-rapid-ey
e-movement (NREM) and rapid-eye-movement (REM) sleep. This changes include
typical variations in the respiratory or cardiovascular system respiratory
rate, heart rate, heart rate variability, blood pressure), electrodermal ac
tivity, sexual functions, thermoregulation, pupillomotoric and cerebral blo
od flow. Description and explanation of changes of all these autonomic func
tions in different sleep-stages permit understanding of pathophysiology of
many neurological discorders or disturbances of sleep. In every chapter the
re are examples of patients with autonomic dysfunction in sleep as sleep-ap
nea-syndrome, stroke, Parkinson's syndrome or multiple system atrophy (MSA)
.