Severe leg pain, swelling, and tenderness after an injury can also be a sign of bone fracture. Aching or itching in the legs maybe a symptom of varicose veins, those prominent blue or purple veins on the legs or ankles. If you have the following symptoms, call your doctor: Persistent pain in your leg.
Alpha waves are one type of brain waves detected either by electroencephalography (EEG) or magnetoencephalography (MEG) and predominantly originate from the occipital lobe during wakeful relaxation with closed eyes.
So, the beta wave represents arousal of the cortex to a higher state of alertness or tension. It may also be associated with remembering or retrieving memories. Delta and Theta: Delta and theta rhythms are low-frequency EEG patterns that increase during sleep in the normal adult.