At two years old, a child engaged in messy sensory play activates touch, proprioception, smell, and vestibular systems simultaneously…

Occupational therapists see four sensory systems firing at once when a toddler plays with yoghurt — tactile, proprioceptive, vestibular, and olfactory. Here's what the neuroscience actually shows.

By The Artful Parent Editorial Team · Jul 28, 2026

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