1The crowd erupted spontaneously into applause as the concert began.
2Does the human brain process visual information spontaneously, or is there always some degree of cognitive filtering?
3The artist's use of bold colours and abstract shapes was intended to evoke a spontaneously emotional response from the viewer.
4Researchers have long been fascinated by the ability of certain animals to learn and adapt spontaneously, without explicit training or conditioning.
5There is a profound difference between a decision made spontaneously, in the heat of the moment, and one that is the result of careful deliberation and reflection.