Sensory integration therapy aims to help kids with sensory processing issues (which some people may refer to as "sensory integration disorder") by exposing them to sensory stimulation in a structured, repetitive way. The theory behind it is that over time, the brain will adapt and allow kids to process and react to sensations more efficiently.
Sensory integration (SI) therapy should be provided by a specially trained occupational therapist (OT). The OT determines through a thorough evaluation whether your child would benefit from SI therapy. In traditional SI therapy, the OT exposes a child to sensory stimulation through repetitive activities.
The OT gradually makes activities more challenging and complex. The idea is that through repetition, your child’s nervous system will respond in a more "organized" way to sensations and movement.