During an EEG, the electrical signals of the brain are recorded. This electrical activity is detected by electrodes, or sensors, placed on the patient's scalp and transmitted to a polygraph that records the activity.
Mardi Gras Beads or throws are a fun part of the Carnival festivities in New Orleans, Louisiana.
Certainly, they are one of the most enduring symbols of Mardi Gras. The beads themselves have a meaning that can represent good luck or the spirit and color of Mardi Gras. Others used beads as a bartering tool for a glimpse of bare flesh. While the beads themselves do not have a specific significance, their colors do.