ABSTRACT
This chapter outlines some of the organizational features of sensorimotor cortices and the basis for response modulation of neurons within the areas. A somewhat extensive reference list is provided as a point of departure for investigation into the general topic of modulation of somatosensory responsiveness. The availability and utilization of sensory information may be altered by attention and expectation of successful behavioral outcome. The somatosensory system conveys information to the central nervous system about the external and internal sensory environments. Examining vibratory stimulus-related activity can indicate the fidelity with which sensorimotor cortical neurons respond to task-related peripheral sensory events. Model makers suggest that there are basic principles that should be considered when demonstrating the influences of behavioral context upon sensory responsiveness, movement-related activity, and ultimately upon sensorimotor integration. Changes in neuronal activity are related to whether monkeys make movements in response to sensory inputs that are delivered to the same body part that is subsequently moved.
