The low pressure created behind the fast-moving air column produces a Bernoulli effect which causes the bottom to close, followed by the top2, 3 Column of air pressure opens bottom of vibrating layers of vocal folds; body of vocal folds stays in place10 Closure of the vocal folds cuts off the air column and releases a pulse of air4, 5 Column of air pressure continues to move upward, now towards the top of vocal folds, and opens the topNew vibratory cycle – repeat 1-10In the