Pareidolia is the physiological phenomenon that cause people to see or hear something in or on an object/sound and give it another object/sound's propities. For example, seeing the a face face on the surface of Mars. An example of a auditoriy pareidolia is hearing hidden messages on songs called backmasking.A 2009 MEG study found that objects incidentally perceived as faces (Like the face to the left) evoke an early (165 ms) activation in the ventral fusiform cortex a time and location similar to that evoked by faces, whereas other common objects do not evoke such activation. This activation is similar to a slightly earlier peak at 130 ms seen for images of real faces. This could show that brains automatically perceive these objects as faces but on later inspection the human brain can see the difference. Carl Sagan hypothesised that humans were "hard-wired" from birth to identify the human face. This allows people to use only minimal details to recognize faces from a distance and could allow for mistakes to be made when recognising faces.