How does the spinoreticular tract contribute to the emotional effects of pain?

The spinoreticular tract is a primary ascending pathway that transmits pain impulses from the spinal cord to the brainstem, specifically ending in the reticular formation of the medulla oblongata and the pons.1

While the spinothalamic tract is primarily responsible for the conscious sensation of pain—including its precise spatial and temporal characteristics—the spinoreticular tract is understood to mediate the arousal and emotional components associated with painful experiences. Furthermore, this pathway contributes to the autonomic responses that often accompany pain, such as changes in blood pressure or respiration. By relaying these signals to the brainstem, the tract helps integrate the unpleasant, affective qualities of pain that trigger the body's alert and emotional reactions.123