Olfactory Bulb Field Potentials and Respiration in Sleep-Wake States of Mice

Figure 1

Examples of three vigilance states: waking, nonrapid eye moving (NREM), and rapid eye moving (REM) sleep. Three signals are sufficient for vigilance staging: (1) movement (mov) detection based on accelerometer activity; (2) detection of slow waves in parietal cortex (PaC), and (3) detection of theta (4–12 Hz) oscillations in the PaC reflecting activity in the underlying hippocampus. Imm: immobile; OB: olfactory bulb; PG: plethysmography; TC: thermocouple; RR: respiration-related rhythm.