1 Introduction: Centrifugal Control of Sensory Pathways -- 1.1 General Background -- 1.2 Functional Implieations of Centrifugal Control Systems -- 1.3 Somatosensory Pathways Known to be Subject to Descending Controls -- 1.4 Plan for the Review -- 1.5 Conclusions -- 2 Behavioral Evidence for Descending Control of Nociceptive Transmission -- 2.1 Measures of Analgesia -- 2.1.1 Background -- 2.1.2 Reflex Tests -- 2.1.3 Other Behavioral Responses -- 2.1.4 Human Studies -- 2.1.5 Neural Correlates of Analgesia -- 2.1.6 Analgesia Tests in Studies of Pain Mechanisms -- 2.2 Stimulation-Produced Analgesia -- 2.3 Opiate and Opioid Analgesia -- 2.4 Analgesia from Peripheral Stimulation -- 2.5 Stress-Induced Analgesia -- 2.6 Hypnotic Analgesia -- 2.7 Conclusions -- 3 Pharmacology of Analgesia Due to Descending Control Systems -- 3.1 Overview -- 3.2 Relationship Between SPA and Opiate Analgesia -- 3.3 Role of Monoamines in SPA -- 3.4 Role of Monoamines in Opiate Analgesia -- 3.5 Other Candidate Transmitted and Modulators -- 3.6 Pharmacology of Analgesia Due to Acupuncture and Transcutaneous Nerve Stimulation -- 3.7 Conclusions -- 4 Descending Control of the Flexion Reflex -- 4.1 Organization of the Flexion Reflex -- 4.2 Descending Pathways That Control the Flexion Reflex -- 4.3 Conclusions -- 5 Descending Control of Spinal Cord Nociceptive Neurons -- 5.1 Dorsal Horn Interneurons -- 5.2 Sensory Tract Cells -- 5.2.1 FRA-Activated-Tracts -- 5.2.2 Spinothalamic Tract -- 5.2.3 SpinocervicalTract -- 5.2.4 Other Tracts -- 5.3 Conclusions -- 6 Correlations Between the Descending Control of Spinal Cord Nociceptive Pathways and the Operation of the A nalgesia Systems -- 6.1 Flexion Reflex -- 6.2 Nociceptive Dorsal Horn Neurons -- 7 References -- 8 Subject Index

1. Medicine
2. Human physiology
3. Biomedicine
4. Human Physiology