When my own son was in preschool the school called an IEP meeting to explain to me that he had SI Dysfunction and needed to be assessed to determine whether he was eligible for treatment. They used a lot of strange words to describe his condition, but essentially ended up describing many of the problems he experienced throughout the day, from motor planning to avoid bumping into obstacle to hypersensitivity to sounds and food and hyposensitivity to movement. I was told about the book, The Out of Sync Child by Carol Stock Kranowitz, M.A. It is an excellent reference on this disorder, though written more for therapists than parents. I have provided some frequently used definition below.
Glossary:
Hyper-sensitivity - oversensitivity to sensory stimuli, characterized by a tendency to be either fearful or cautions, or negative and defiant.
Hyposensitivity- undersensitivity to sensory stimuli, characterized by a tendency either to crave intense sensations or to withdraw and be difficult to engage.
Motor Planning- the brains ability to conceive, organize and execute a sequence of complex physical actions.
Occupational Therapist- this is an individual who works with children who have impairments in fine and/or gross motor skills, Daily Living Skills or have Sensory Integration Disorder.
Proprioception- a sense that informs us of the position of our body parts.
Self-Stimulatory Behavior (Stimming) - actions used solely to stimulate one’s own senses, such as body rocking and finger flicking. Theories suggest that “self-stims” serve to reduce sensory overload and increase concentration. Sometimes self stimulatory behavior can create an arousal state. Other examples include hand flapping, toe walking, spinning and echolalia.
Sensory Integration Dysfunction- the inefficient neurological processing of information received through the senses, causing problems with learning, development, and behavior. Also called sensory integration disorder and sensory integrative dysfunction
Vestibular- pertaining to the sensory system located on the inner ear tha governs posture and balance.