Nervous System 9

Nervous System IX: Professor Diamond continues her discussion of the nervous system with an introduction of the cerebral hemisphere and it is divided into lobes with specific functions. She uses Brodmann’s numbering system as she draws the location of lobes and areas of the brain, including the precentral, postcentral, and premotor gyri, the central sulcus, motor cortex, frontal eye fields, and prefrontal lobe. She details the functions of the prefrontal lobe, noting that it is responsible for working memory, judgment, personality, and abstract reasoning before describing how a frontal lobotomy was used to treat extreme anxiety. She continues to discuss the medial orbital cortex and the amygdala in the temporal lobe, describing how it relates to fear. Professor Diamond further develops her explanation of the cerebral hemisphere, drawing the positions of the parietal lobe, parietal occipital fissure, occipital lobe, intraparietal sulcus, superior and inferior parietal lobes, and the supramarginal, angular, and postcentral gyri. She transitions to a discussion on the sensory functions of the postcentral gyrus including touch and pressure, kinesthetic sense, and taste. She concludes with a midline frontal view of the cerebral hemisphere and showing slides illustrating the concepts introduced in lecture.