How to Do a Back Handspring. Two Parts:PreparationFormCommunity Q&A. The back handspring is a basic building block for many gymnastics or cheerleading routines. To do a back handspring, you have to fall backwards, land upside-down on your hands, and push upwards to land back on your feet.
Different types of normal brain waves. An EEG records patterns of brain activity. Among the basic waveforms are the alpha, beta, theta, and delta rhythms. Alpha waves occur at a frequency of 8 to 12 cycles per second in a regular rhythm.They are present only when you are awake but have your eyes closed.he EEG is used to evaluate several types of brain disorders. When epilepsy is present, seizure activity will appear as rapid spiking waves on the EEG. Patients with lesions of the brain, which can result from tumors or stroke, may have unusually slow EEG waves, depending on the size and the location of the lesion.
Electrical activity in the brain is recorded as a âwave.â There are many types of brain waves that an EEG records. The basic brain waves are alpha, beta, theta, and delta waves. There are other more complex waves. Each type of brain wave has a normal frequency, height, shape, and location.