Multi-sensory integration refers to how the five senses work together to achieve a certain function or outcome. This means that the various body systems such as vision, hearing, smell, taste and touch are interconnected like pieces in a puzzle. It is only when the puzzle is complete and the brain receives data from all the senses that we can see the whole picture. This concept is first developed by an eleventh century physician and philosopher known in Islamic civilization as Ibn Sina (d. 1036) and in the West as Avicenna. He argued that we have an internal sense called “common sense” (al-hiss al-mushtarak) which combines all the data received from individual external five senses. Therefore, for Ibn Sina multisensory integration is achieved by the common sense. Then, this combined data is sent to the mind where it undergoes the process of thinking.