1 Morphology of Cutaneous Receptors.- 2 Cutaneous Mechanoreceptors and Nociceptors.- 3 Cutaneous Thermoreceptors.- 4 Joint Receptors and Kinaesthesis.- 5 The Concept of Relay Nuclei.- 6 Control of the Access of Afferent Activity to Somatosensory Pathways.- 7 Distribution and Connections of Afferent Fibres in the Spinal Cord.- 8 Dorsal Horn Electrophysiology.- 9 The Trigeminal System.- 10 Ascending and Long Spinal Pathways: Dorsal Columns, Spinocervical Tract and Spinothalamic Tract.- 11 Functional Organization of Spinocerebellar Paths.- 12 Reticular Formation.- 13 Convergent Thalamic and Cortical Projections - The Non-Specific System.- 14 Electrical Recording from the Thalamus in Human Subjects.- 15 Anatomical Organization of the Somatosensory Cortex.- 16 Functional Organization of the Somatosensory Cortex.- 17 Somatosensory Cortex: Descending Influences on Ascending Systems.- 18 Somesthetic Effects of Damage to the Central Nervous System.- 19 Electrical Stimulation of Cortex in Human Subjects, and Conscious Sensory Aspects.- Author Index.