Autism and Sensory Processing: Understanding and Support in Ontario

A comprehensive meta-analysis by Ben-Sasson et al. (2019) found that over 90% of autistic individuals exhibit clinically significant sensory processing differences, compared to approximately 5-15% of the general population. The most commonly affected domains are auditory processing (hypersensitivity to noise), tactile processing (aversion to textures or touch), and proprioceptive processing (difficulties with body awareness and movement planning).

Autistic individuals typically show a mixed sensory profile rather than uniform hyper- or hyposensitivity. A child might be hypersensitive to sounds (covering ears in noisy environments) while simultaneously seeking proprioceptive input (crashing into furniture, seeking deep pressure). Understanding the individual's specific sensory profile is essential for effective intervention and accommodation.

The Sensory Profile 2 (Dunn, 2014) is the most widely used assessment tool in Ontario. It maps an individual's responses across four sensory processing patterns: seeking, avoiding, sensitivity, and registration. This profile guides intervention planning and environmental modifications.

Occupational therapy may help with sensory processing differences. Ask whether the therapist uses a sensory integration approach, how goals are measured, and what evidence supports the plan.

Environmental modifications are equally important and often more immediately impactful. These include: noise-reducing headphones for auditory sensitivity, weighted blankets or vests for proprioceptive input, fidget tools for sensory seeking, modified lighting for visual sensitivity, and designated quiet spaces for sensory breaks.

In Ontario, ask about occupational therapy through the Ontario Autism Program, school boards, community clinics, and Children's Treatment Centres. Publicly funded waits vary by provider and region.