Sensory integration disorder or dysfunction (SID), or Sensory Processing disorder (SPD), is a neurological disorder that results from the brain’s inability to integrate, process, and respond to certain information received from the body’s five senses. These sensory systems are responsible for detecting sights, sounds, smell, tastes, temperatures, pain and the position and movements of the body. The brain then forms a combined picture of this information in order for the body to make sense of its surroundings and react to them appropriately. The ongoing relationship between behavior and brain functioning is called sensory integration (SI). Sensory integration provides a crucial foundation for later, more complex learning and behavior.