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.
The Mu wave is a brain frequency which has been observed and studied since the 1930âs. Mu waves are in the range of 8-13 Hz and arise from large groups of neurons in the brain.Recently Mu brain waves have been associated with the âmirror neuronâ system that activates when we watch another personâs activity.lpha Waves: 8-13 Hz. Alpha is the brain wave associated with relaxed, daydreaming states of mind; itâs a state of relaxed, detached awareness. Many people are âin alphaâ while watching TV. Alpha is often called a âhypnogogicâ state because you may experience spontaneous mental imagery.