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Understanding Asperger Syndrome:
Sensory Integration Dysfunction

Challenges of the Central Peripheral Nervous System in receiving and processing information

Defining Sensory Processing

The way the central and peripheral nervous systems manage and interpret incoming sensory information from the seven sensory systems


Sensory Processing: Seven Point System


Tactile = Touch

Receptor: Skin Function:
  • Skin is the largest organ
    in the body
  • Provides information about the environment
  • Cell distribution varies according to body part function; greatest density is in the hands and genitals
  • Tactile quality:
  • > Pressure (light, deep)
    > Texture (hard, soft, sharp, dull)
    > Temperature (hot, cold)


The Tactile System and AS

Hypersensitivity Hyposensitivity
  • Over-reactive to tactile stimuli
  • High input registration
  • > Low pain tolerance

  • Sensory defensiveness
  • > Resistant to touch
    > Irritated by clothing tags and fabrics
    > Avoids handling messy material

  • Behavioral response
  • > Emotional/aggressive response to touch
    > Anxiety response to new tactile experiences
    > Avoidance behaviors and meltdowns

  • Under-reactive to tactile information

  • Low input registration
  • > High pain tolerance

  • Lack of tactile awareness
  • > Doesn't feel or respond to touch
    > Allows drool or food to remain on face

  • Behavioral response
  • > Poor judgement regarding personal space
    > Indiscriminate touching and handling of objects

  • Mouths and chews fingernails, pencils

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