Compare and contrast the receptive fields of retinal cells (bipolar and ganglion cells) with cortical receptive fields. Describe the descending pathways for the control of pain, and discuss the implications of this structural organization for the management of chronic pain. The emotional quality of olfaction is evident in the distortion of this sense that occurs in some types of psychopathologies. Describe one disorder that is associated with olfactory disturbances, and comment on how such disturbances might contribute to the behavior that characterizes the disorder. Describe the sequence of events in the nervous system that occurs as we initiate a voluntary movement. Describe the role of the preoptic area of the hypothalamus in the regulation of core body temperature in endotherms. This assignment utilizes the SafeAssign originality tool.