When the volume knob is set differently
Every one of us filters an enormous amount of sensory information without noticing: the feeling of clothes, background noise, the hum of a fan, the pressure of a chair. For some children that filter works differently. Information that others discard arrives at full volume, or does not arrive at all.
A child who is over-responsive experiences ordinary things as genuinely too much. A shirt label, a hand dryer, a crowded room, the seam of a sock. What looks like an overreaction to a small thing is an accurate reaction to a large one, because for them it was large.
A child who is under-responsive does not get enough input from ordinary activity, so they go looking for it: crashing into furniture, spinning, chewing, squeezing into tight spaces, moving constantly. This is frequently mistaken for hyperactivity or naughtiness. It is a nervous system trying to reach the level of alertness where it can function.
Many children are both, in different senses, and change from day to day. That inconsistency is exactly what makes it so confusing for families.
Why this affects everything else
A dysregulated nervous system cannot learn. Not will not. Cannot. When a child's system is flooded or is desperately seeking input, the parts of the brain that handle attention, language and reasoning are not available. This is why an hour of teaching a dysregulated child achieves less than ten minutes with a regulated one.
It is also why sensory work usually comes first in a child's timetable rather than last. Regulation is not a nice extra after the important work. It is the condition that makes the important work possible.
The sensory room and the sensory diet
Sessions happen in a space set up for it: swings, crash mats, tunnels, textures, deep-pressure equipment, and control over light and sound. Activities are chosen for what each child's system needs: calming input for an overwhelmed child, organising input for one who is seeking.
But an hour in a sensory room does not carry a child through a week. What does is a sensory diet: small, regular doses of the right input built into the ordinary day, at home and in class. Ten minutes of heavy work before school. Something to chew during a lesson. A quiet corner that is available without asking. A firmer chair. These cost almost nothing and they are what makes the difference between a good session and a good week.
In practice
What a session looks like
Reading where your child's system is today. The same child needs different things on different mornings, and the session adapts.
Vestibular and proprioceptive work (swinging, jumping, pushing, pulling, deep pressure), the two senses that do most of the regulating.
Graded exposure to whatever your child finds difficult, at a pace they can tolerate. Never flooding: forcing a child through a sensory experience they cannot cope with teaches them that the room is unsafe.
A calm, organised finish so your child leaves regulated rather than wound up.
Adjusting the sensory diet with you based on what worked, and what the week has been like at home.
What progress looks like
Every child moves at their own pace, and none of this is a timetable or a promise. These are the changes families most often notice first.
- Your child stays regulated for longer stretches of the day.
- Recovery after being overwhelmed takes minutes rather than the rest of the afternoon.
- Places that had become impossible, such as the bazaar, a wedding or a busy classroom, become manageable.
- Your child begins to notice and say what they need: a break, a quiet space, something to squeeze.
- Attention improves as a direct consequence, and so does everything that depends on attention.