Cooperation of sight and sound | Neuro-patch
As a child you were probably taught to tell how far away lightening was. When there is a flash, you count with a particular rhythm until you hear the thunder and that is how many miles the lightening is away from you. Parents are not going to stop teaching this because it is something for a nervous child to do in a thunder storm and it convinces them that they are usually a safe distance from danger. But it only works for distant events. Events that are close by are synchronized by the brain and consciously we collapse the vision and hearing clues both for time and space to make a single event. We are not conscious of a difference in the timing or of any slight difference in the placing of the event. A particular region of the brain does this aligning - "the superior colliculus, a midbrain region that functions imperatively for integrating auditory and visual signals for attending to and localizing audiovisual stimuli". But if the difference is too large between the vision and hearing,