ECE6325 Chap.3 Sensory Processing and Responsivity
Sensory Processing and Responsivity
Eight systems contribute to participation
The course expands vision, hearing, touch, taste, and smell with vestibular processing, proprioception, and interoception. Vestibular information supports movement and balance, proprioception supplies information about body position and force, and interoception registers internal bodily states.
These systems contribute to postural security, praxis, emotional awareness, self-care, regulation, and readiness for learning. They interact rather than operating as isolated preferences.
Threshold and response strategy
Dunn’s framework crosses neurological threshold with behavioural response strategy. A low threshold registers small input readily; a high threshold requires stronger or longer input.
A passive strategy allows input to arrive, while an active strategy changes or seeks input. This produces patterns described as over-responsivity, under-responsivity, sensitivity, or seeking. Profiles are modality-specific, so auditory over-responsivity can coexist with proprioceptive seeking and a higher tactile threshold.
Participation is the decision rule
A sensory preference is not pathological in isolation.
Concern begins when a pattern repeatedly limits access, learning, communication, comfort, or well-being. Observation should record the input, context, response, participation effect, and what happened after a voluntary environmental change. This chain avoids treating repeated movement as misconduct or every avoidance as refusal, and it points toward a support that can be tested without diagnosing from a vignette.
What this chapter covers
- 01
The eight sensory systems
- 02
Vestibular, proprioceptive, and interoceptive processing
- 03
Neurological thresholds and response strategies
- 04
Over-responsivity, under-responsivity, and seeking
- 05
Mixed sensory profiles
- 06
Tactile responsivity, consent, and participation
Worked example · free
Interpret a mixed sensory observation
- 2Sort observations by sensory modality.
- 3State threshold or strategy hypotheses with uncertainty.
- 3Choose voluntary supports and review evidence.
Key terms
- Interoception
- The sensory registration of internal bodily states that contributes to emotion, self-care, and regulation.
- Proprioception
- Sensory information about body position, movement, and force from muscles and joints.
- Vestibular System
- The sensory system supporting balance, head movement, and spatial orientation.
- Sensory Threshold
- The amount of input required before a sensory event is registered.
- Praxis
- The capacity to conceive, plan, and carry out a novel purposeful action.
Sensory Processing and Responsivity FAQ
Can one child be sensory seeking and over-responsive?
Yes, because thresholds and response strategies can differ across modalities. A child may avoid unpredictable sound while seeking deep pressure or movement. Record each system, context, and participation effect separately rather than assigning one global sensory type. Supports should be specific, voluntary, and reviewed.
When does a sensory preference need classroom action?
Action is justified when the pattern repeatedly limits access, learning, communication, comfort, or well-being. Begin with environmental observation and a low-risk voluntary adjustment. Measure whether participation improves. The adult’s belief that a tool is calming is not enough if the child avoids it or the learning barrier remains.
How should touch be included in multisensory learning?
Offer graduated routes such as observation, tools, indirect contact, and direct touch, and provide communication for stop, more, different, and finished. Preview what will happen and never guide a child’s hand solely to ensure participation. Tactile learning remains available while consent and intensity stay under learner control.
Assessment move
Memorise the eight systems by grouping five external channels with three body-centred systems. Then draw the threshold-by-strategy matrix from memory and place one original observation in each quadrant. For every case, write input, response, participation effect, and testable support. Practise mixed profiles so you do not treat auditory avoidance and movement seeking as contradictory.
End each answer with one sentence about agency: how the child can accept, refuse, or modify the support. Review interoception and tactile responsivity separately because both are easily reduced to generic emotion or touch claims. Design one mini-trial for a familiar routine.
Name the precise sensory event, write two competing hypotheses, select one controllable environmental change, and choose a participation indicator before the trial. Interpret improvement narrowly rather than claiming it proves a disorder. If nothing changes, list possible design faults such as timing, discomfort, unfamiliar equipment, or a hidden social demand.
This converts sensory vocabulary into cautious, reviewable educational reasoning.
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