OT Sensory Integration Model

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Dyspraxia

Impairment in the ability to conceive, plan, sequence, or execute action

Postural Disorder

disorder causing difficulty stabilizing while moving

Postural reactions

Changes in body position to maintain equilibrium

Praxis

Planning motor action

Sensory Discrimination Disorder

Difficulty interpreting sensory information

Sensory Integration

Neuralogical process of organizing sensation from the body and environment that allows effect use of the body in the environment

Sensory Modulation Disorder

Disorder involving difficulty responding appropriately to the degree, nature, or intensity of sensory information

Sensory Modulation disorder: Sensory Overresponsivity

-Responding with more speed, intensity, or duration than is normal for a given sensory input

Sensory Modulation disorder: Sensory Seeking/ Craving

Having an extreme desire for excessive amounts of sensory stimulation

Sensory Modulation disorder: Sensory Underresponsitivity

blunted or slow response to sensory information

Sensory-Based Motor Disorder

Disorder that is seen as difficulties with postural or voluntary movement

Sensory Integration Assumptions

-Brain has neural plasticity
-Sensory integration skills follow a developmental pattern
-The brain functions as an integrated hierarchical unit
-People have an innate drive to seek sensory motor activities
-Brain organization and adaptive behavior are adaptive

Three factors for a playful approach to intervention (SI)

-Perception of inner control
-Intrinsic motivation
-Freedom from the constraints of reality

Elements of Sensory Integration Intervention

-Provide sensory opportunities
-Provide just-right challenge
-Collaborate on activity choices
-Guide self-organization
-Create play context
-Arrange room to engage the child

Desired results of sensory integration

-concentration
-organization
-self-esteem
-academic learning ability
-capacity for abstract reasoning
-specialization of sides of the brain (lateralization)

Sensory Systems (proximal or body senses)

-Vestibular: inner ear perception of movement/speed, relation to gravity
-Tactile: epidermis and dermis, meisner's/pacinian corpuscles, touch receptors
-Proprioceptive: Muscles, tendons, and joints that provide information about body position in space, postural control

Sensory Systems (Distal)

ENVIRONMENTAL
-vision
-auditory: spacial orientation, language development

CHEMICAL
-gustatory (taste)
-olfactory (smell)

Sensory Stimuli (CNS basic response)

-Supression (inhibition)
-Divergence: ability of brain to relay sensory input to multiple parts of the brain. This can result in necessary actions (facilitation).
-Convergence: synthesizing input from many sources so the brain can create an organized response.

Sensory Diet

-providing a succession of rich an varied sensory inputs on a daily basis

Dunn' Sensory Processing Model

-Sensory processing: brain makes meaning of sensory stimuli

4 basic patterns:
-Sensation seeking (high threshold, active)
-Sensation avoiding (low threshold, active)
-Sensory sensitivity (low threshold, passive)
-Low registration (high threshold, passive)

SI Assessments

-SIPT
-Sensory processing measures
-Interview
-Observation

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