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ASI
individualized OT approach developed by A. Jean Ayres to remediate sensory integrative problems in children
NOT simply "give sensory input"
Sensory input → adaptive response → improved sensory integration → improved participation/occupation
ASI is:
Child-led
Play-based
Active
Individualized
Sensory-rich
Just-right challenge
Adaptive responses
Intrinsic motivation
Therapist-guided, but child-directed
Focuses on underlying sensory integration processes
sensory reactivity/modulation
How strongly/appropriately a person responds to sensory input.
Think: OVER or UNDER responsive.
sensory discrimination & perception
Ability to distinguish/interpret sensory information.
Think: "What am I sensing?"
praxis
motor planning
Think:Ideation → motor planning → execution
major areas of function/dysfunction
sensory reactivity/modulation
sensory discrimination and perception
praxis
sensory integration theory
organization of sensation for use
core assumptions of ASI
1. sensory experiences shape development
2. brain can change = neuroplasticity
3. Adaptive responses promote development
4. Children are intrinsically motivated
5. Just-right challenges support growth
adaptive response
appropriate action in which the individual responds successfully to an environmental demand
example:
Child is learning to ride a bike.
Vestibular + proprioceptive information comes in
Child begins to fall
Brain rapidly integrates sensory information
Child shifts weight appropriately
Maintains balance
➡️ That successful response = adaptive response
T/F: ASI is trying to create opportunities for adaptive responses.
true
just-right challenge
Activity is:
Not too easy + Not too difficult
but challenging enough that the child must exert effort and can still experience success.
**changing activity difficulty based on child's response
T/F: ASI is child-directed within therapist-guided experiences.
true
inner drive
Motivation to physically engage in challenging and therapeutic activities that facilitate an adaptive response
ASI works best when
child is:
Interested
Motivated
Actively participating
Given some choice
T/F: Balance between therapist structure and child's freedom of choice.
true
Brain learns differently when the child is ________ __________ rather than passively receiving stimulation.
actively involved
neuroplasticity
Nervous system's ability to change in response to environmental input and demands
ASI theory proposes:
Active sensory-motor experiences
→ adaptive responses
→ repeated successful experiences
→ neural changes / improved sensory integration
→ improved occupational participation
ASI environment
Large activity areas
Specialized equipment
Suspended equipment
Sensory-rich
Novel
Opportunities for movement
Challenging cognitive/sensory/motor tasks
T/F: Suspended equipment is hallmark of ASI.
true
10 process elements of ASI
Safety
Sensory opportunities
Modulation
Motor control
Praxis
Collaborate
Just-right challenge
Success
Intrinsic motivation/play
Therapeutic alliance
physical safety
safe environment
Sensory Opportunities
tactile/vestibular/prop
sensory modulation
optimal arousal
motor control
postural/ocular/oral/bilateral
praxis
motor planning/ideation
collaborates in activity choice
shared control
just-right challenge
not too easy/hard
activities are successful
experience success
intrinsic motivation
child wants to play
therapeutic alliance
positive OT-child relationship
sensory-based intervention
Modify sensory input/environment/task
⬇️
Improve regulation/attention/arousal/function
⬇️
Participation
ASI
Underlying sensory integration
⬇️
Adaptive response
⬇️
Neuroplastic change
⬇️
Occupation/participation
sensory based interventions
Therapist-directed strategy
Environmental modification
sensory support
Regulation
Attention
Arousal
participation
Predictable routines
Noise reduction
Movement breaks
Visual schedules
Sensory diet
specific sensory techniques
involve specific sensory stimuli that are controlled and delivered in a predetermined manner, often according to a protocol/schedule
Astronaut Program
Hug Machine
Therapeutic Listening
Weighted vests
Wilbarger Protocol
sensory diet
Individualized sensory experiences/activities provided throughout the day to support optimal functioning
scheduled/individualized
sensory environmental modifications
Modify the environment to help the child manage sensory input.
Examples:
Reduce noise
Change lighting
Reduce visual distractions
Modify physical contact
Change seating
Quiet space
Noise-reducing headphones
Classroom sensory supports
modulation
Sensory processing concept
➡️ How the nervous system responds to sensory input.
Think:
OVER-responsive / UNDER-responsive
regulation
Functional state/ability to manage arousal and behavior
Think:
Can the child stay in an appropriate state for the activity?
astronaut program
Rotatory vestibular + sound + proprioceptive input
hug machine
deep pressure
therapeutic listening
Sound/music + sensory-integrative activities
weighted vest
Tactile + proprioceptive input
willbarger protocol
Brushing + joint compression
EASI
evaluation in ASI
SIPT
sensory integration and praxis test
➡️ Most closely aligned with ASI➡️ Specialized training required
SPM-2
Sensory Processing Measure-2
Provides broader information including:
sensory reactivity
praxis
planning/ideas
participation
Sensory profile 2
Provides valuable information about:
sensory reactivity
modulation patterns
But does NOT comprehensively assess all SI constructs.
participation/performance measures
PDMS
BOT
M-FUN
T/F: ASI targets underlying sensory integration processes.
true
ASI outcomes
Occupational participation
Goal attainment
Adaptive responses
Praxis/motor planning
Sensory integration/processing
Functional performance
Confidence
Competence in everyday activities
ASI dosing
18-30 sessions
2-3× per week
45-60 minutes/session
6-10 weeks
fidelity
Extent to which intervention is implemented as intended
Appropriate practitioner/training
Appropriate evaluation
Clinical reasoning grounded in SI
Individualized intervention
Adaptive responses
Participation-focused outcomes
Appropriate environment
Appropriate process
fidelity: structural
ROOM + DOCUMENTATION + SAFETY
Variety of SI equipment
Safe equipment procedures
Adequate space
Documentation
Goals connected to intervention
fidelity: process
WHAT THE THERAPIST DOES DURING THE SESSION
T/F: ASI has highest evidence for children with autism ages 4-12.
true
continue/supported interventions
Environmental modifications/supports
Parent/teacher education & coaching
Consultation embedded in routines
Occupation-based interventions with strong sensory input
Qigong massage — strongest support among specific sensory techniques
Alert Program for self-regulation
Individualized sensory supports tied to participation goals
Sensory diets
Therapy balls/active seating
Weighted vests for select children with ADHD
Therapeutic Listening
Classroom sensory supports
Strategic vestibular activities
use clinical judgement interventions
Wilbarger Protocol
Astronaut Program
Swinging as a stand-alone intervention
reconsider interventions
Weighted vests as a routine intervention for autism
Reflex integration programs with limited supporting evidence
Sensory techniques used without monitoring outcomes
overactivity
Response is too intense or lasts too long
May be defensive/aversive
Touch, movement, sound, visual input, etc. may interfere with participation
underreactivity
Response is less than expected
May not notice sensory information others detect
Can affect engagement/participation
discrimination
accurately interpreting sensory information so it can be USED
tactile
localization + discrimination of touch
proprioceptive
body position/movement; force, timing, direction
vestibular
movement, gravity, head position; balance/postural control
visual
form, space, figure-ground, visual-motor
auditory
discrimination + interpretation of sound
praxis
IDEATION → PLANNING → EXECUTION → MODIFICATION
praxis: ideation
generating ideas
what could i do?
praxis: planning
organize + sequence actions
how will i do it?
praxis: execution
carry out motor plan
try it
praxis: modification
adapt plan based on results
did it work? what should change?
T/F: Repetition equals praxis.
false
low praxis demand
OT telling child exactly how to complete a task
high praxis demand
OT setting up obstacle course and asking the child to tell them how to get through it
praxis demand
"Don't plan all the movement for a child whose goal is to learn to plan movement."
sensory-specific techniques
controlled, predetermined sensory stimuli
delivered according to:
schedule
protocol
sequence
Expected outcomes:
adaptive behavior
attention
arousal
regulation
FUNCTIONAL STATE
Vestibular/tactile input can cause
Strong autonomic responses
Changes in arousal
Hyperactive/distractible states
Lethargic/drowsy states
tactile defensiveness
Forcing tactile stimulation ≠ automatically improving tolerance.
It may actually:
➡️ increase sensitization
➡️ increase defensiveness
sensory intervention categories
1. specific sensory techniques
2. sensory environmental modifications
3. education & coaching
4. cognitive interventions
5. occupation-based interventions with strong sensory input
cognitive interventions
best used with older clients
alert program
CO-OP
alert program
cognitive intervention
Uses sensory integration concepts to teach children to:
Self-manage their arousal levels
goal: better participation
occupation-based interventions with strong sensory input
use meaningful occupations/activities that naturally provide sensory input
sensory goals
connect the sensory problem to FUNCTION
dosage: scientific clinical reasoning
research dosage
dosage: pragmatic clinical reasoning
time, space, finances, availability
dosage: narrative/interactive clinical reasoning
family priorities
dosage: conditional clinical reasoning
monitor progress + adapt