What is the difference between Sensory Integration Dysfunction & Sensory Processing Disorder?
These terms are commonly confused. Sensory Integration is mainly used to describe the theory and treatment based off of the work done by Jean Ayres. Sensory processing disorder is used to describe and define the disorder and dysfunction symptoms.
The Senses That Affect Sensory Integration:
We are all familiar with the 5 senses:
Tactile: the sense of touch
Auditory: input relating to sounds
Oral: input relating to the mouth
Olfactory: input relating to smell
Visual: input relating to sight.
There are TWO MORE SENSES that some people may be unaware of:
Vestibular: the sense of movement; input from the inner ear about equilibrium, gravitational changes, movement experiences and position in space. Your inner ear is highly coordinated with the neck and back muscles and affects balance and coordination.
Proprioception: the sense of "position"; input from the muscles and joints about body position, weight, pressure, stretch, movement and changes in position. Proprioception is where your body is in relation to space.
When the vestibular sense (gravity and movement) and proprioceptive sense (muscles and joints) are not work effectively, the child will display difficulty with eye movements, posture, balance, muscle tone, and gravitational insecurity.
Those difficulties will translate into difficulties with body perception, coordinating two sides of the body, motor planning, activity level, attention span, and emotional stability. When the tactile sense (touch) is not working effectively, the child may display difficulty with sucking and eating. Not integrating the tactile sense effectively may also impact the mother-infant bond and tactile comfort which is the ability to be hugged or touched without having a negative response.
These difficulties will also then lead to difficulties with activity level, attention span, and emotional stability, which then later leads to problems with purposeful activity. It is important to understand that if your child has difficulty integrating their senses, that these are some of the issues they may face.
Ultimately, the end result of these difficulties will lead to the inability to concentrate and organize, low self esteem, poor self control, and low self confidence. Academic learning ability is compromised, the capacity for abstract thought and reasoning may be lacking and specialization of each side of the body and brain can be affected. Remember, the more a child is motivated to participate in activities, the greater the chance that the child will persist in challenges that lead to improved function.