Final answer:
Sensory-motor integration occurs in the CNS by the process of summation, where sensory input from receptors is processed in the cerebral cortex and integrated with other cognitive functions to generate a motor response.
Step-by-step explanation:
Sensory-motor integration occurs in the CNS by the process of summation. Sensory input from receptors is processed in the cerebral cortex, where it undergoes initial perception, associative processing, and integration in multimodal areas of cortex. This integration combines sensory perceptions with other cognitive functions such as memories, learning, and emotions, leading to a motor response.