Which statement best reflects the brain in Ayres' sensory integration theory?

• A. The brain works as a modular system with separate senses
• B. The brain works as an integrated whole
• C. The brain operates only in response to external stimuli
• D. The brain is not involved in sensory integration

Answer: (B)

In Ayres’ sensory integration theory, the brain is viewed as an integrated whole that dynamically combines information from multiple senses to produce adaptive, coordinated behavior. Sensory input from touch, proprioception, vestibular systems, vision, and hearing doesn’t stay in separate, isolated streams; it is processed across interconnected networks so that the child can organize movement, attention, and arousal in a task context. This integrated processing explains why a child can smoothly plan and perform a complex action—like catching a ball or dressing—by coordinating sensory input across modalities.

If the brain were modular with separate, independent senses, or if it only reacted to external stimuli without internal integration, behavior would be less coordinated and adaptive. Saying the brain is not involved or acts only in response to external input also contradicts the active, internal organization emphasized by Ayres.