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.
Mask Construction. Mardi Gras masks are traditionally built on a wire or plastic frame; the materials vary greatly from plastic to cardboard to feathers. More decorative Mardi Gras masks are usually made of ceramic or porcelain. Leigh Kelley is a freelance writer who provides SEO Web copy to industry leading companies.