#clarity #words matter
Sensory Integration vs Sensory Processing?
It’s both, not either or
The core distinctions
- Sensory processing is how the nervous system detects, transduces, and organises signals within a single sense. Think receptor activation, thalamic relay, primary sensory cortices, gain control, filtering, and basic feature extraction.
- Sensory integration is how the nervous system combines and weights information across senses and over time, links it with internal state and prior experience, and couples it to action. Think multisensory convergence, predictive modelling, body schema, and sensorimotor planning.
At a glance
| Term | What it is | Where it happens most prominently | Hallmark operations | Everyday example |
|---|---|---|---|---|
| Sensory processing | Encoding and modulation within a modality | Receptors, brainstem nuclei, thalamus, primary sensory cortices | Detection thresholds, adaptation, tuning, gating, gain | Hearing your name despite background noise because auditory circuits filter and amplify the signal |
| Sensory integration | Combining signals between modalities and with motor plans and memory to guide behaviour | Superior colliculus, posterior parietal cortex, superior temporal areas, insula, cerebellum, basal ganglia, prefrontal networks | Reliability weighting, temporal binding, spatial alignment, prediction and error correction, constructing body schema | Catching a ball by blending visual trajectory, vestibular sense of head movement, and proprioceptive feel of the arm while predicting where the ball will be |
How they relate
- Processing provides the inputs. Integration provides the coherent percept and action plan.
- They are continuous and reciprocal. Early circuits already mix context, and higher areas send predictions back that shape early processing.
- Development and experience tune both through plasticity.
Why this matters for function
- Perception and meaning: Processing extracts features, integration binds them into objects and scenes, and links them to goals and emotions.
- Praxis: Integration knits somatosensory, vestibular, and visual inputs with motor plans to support ideation, sequencing, and execution. When processing is weak or noisy, integration has less reliable material to work with, which can raise arousal and make planning and doing harder.
- Arousal and attention: Neuromodulators adjust processing gain; integrative networks allocate attention and set expectations, which sharpen early processing.
Processing answers “what is coming in”; integration answers “what does it mean and what should I do. here we aply this to these sensory systems…
- Vestibular: Triggered by head movement via semicircular canals and otolith organs, contributing to balance, gaze stabilisation, and spatial orientation.
- Proprioception: Arises from stretch receptors in muscles, ligaments, and tendons, contributing to body awareness, joint position sense, and force grading.
Vestibular and proprioceptive quality set the stage for a stable body map and prediction. When either is noisy or weak, planning and sequencing become effortful, arousal rises, and “avoidance” can be a sensible way to stay safe. Small, co-produced adjustments to movement, environment, and task demands often unlock comfort, confidence, and fuller participation.