Final answer:
In sensory systems, the three primary levels of neural integration include the receptor level, the circuit level, and the perceptual level. The effector level is not part of these levels; instead, it relates to the motor response following sensory information processing.
Step-by-step explanation:
In the context of the sensory systems, the three primary levels of neural integration are receptor level, circuit level, and perceptual level. The receptor level involves the sensory receptors which detect stimuli. Once a stimulus is detected, it is converted into an electrical signal during a process known as sensory transduction.
Following this, the circuit level comes into play, where the electrical signal travels through networks of neurons reaching the central nervous system (CNS). In the final step, the perceptual level, occurs within the brain, where integration and interpretation of the sensory data take place, leading to perception. Here, the brain distinguishes sensory stimuli and generates an appropriate response.
Therefore, among the given options, effector level is not one of the primary levels of neural integration in a sensory system. The effector level pertains to the motor response after the integration process, typically involving muscles or glands, rather than the processing of sensory information.