![]() ![]() Functionally, this area is known as the primary somatosensory cortex (Brodmann areas 1,2 and 3). The most anterior portion of the parietal lobe is the postcentral gyrus which runs parallel to the central sulcus. The parietal lobe can be divided into three regions. It plays a crucial role in the processing of intellectual and emotional information, including aggression, and facilitates judgement and decision-making. The most rostral portion of the frontal cortex is known as the prefrontal cortex, which encompasses the superior, middle and inferior frontal gyri of the frontal lobe. The inferior surface contains the olfactory tract and olfactory bulb, the straight gyrus and the four orbital gyri.įunctionally, the entire frontal cortex of the frontal lobe is divided into three parts: the prefrontal cortex, motor cortex and Broca’s area.The medial (interhemispheric) surface extends down to the cingulate sulcus and consists mainly of the paracentral lobule (an extension of the precentral and postcentral gyri), and the medial extension of the superior frontal gyrus.The lateral surface of the frontal lobe contains four principal gyri: the precentral, superior frontal, middle frontal, and the inferior frontal gyri.The frontal lobe is made up of three cortical surfaces: a lateral, medial and inferior surface. Gyri: Paraterminal, cingulate, parahippocampal gyriįunction: Modulation of emotions, modulation of visceral and autonomic functions, learning, memory Location: At the medial surface of each hemisphere and around the corpus callosum Location: Beneath the cortex where temporal, parietal and frontal lobes meetįunction: Processing and integration of taste sensation, visceral and pain sensation and vestibular functions Gyri: Superior, middle and inferior occipital gyri cuneate and lingual gyri Location: Corresponds to the occipital bone Posterior to the parietal lobe (separated by parietooccipital sulcus) and behind temporal lobe Gyri: Superior, middle, inferior temporal gyriįunction: Decoding sensory input (visual and auditory) into derived meanings for retention of visual memory and language comprehension Location: Corresponds to the temporal bone Inferior and posterior to the frontal lobe (separated by lateral sulcus) Gyri: Postcentral gyrus, superior and inferior parietal lobulesįunction: Integrates proprioceptive and mechanoceptive stimuli, involved in language processing Location: Corresponds to the parietal bone Superior to the occipital lobe (separated by parietooccipital sulcus) and posterior to the frontal lobe (separated by central sulcus) Gyri: Superior, middle and inferior frontal gyri, precentral gyrusįunction: Control of voluntary movement, involved in attention, short term memory tasks, motivation, planning, speech ![]() Location: Corresponds to the frontal bone Anterior to the parietal lobe (separated by central sulcus) and superior and anterior to the temporal lobe (separated by lateral sulcus - Sylvian fissure) This article will discuss the anatomy and function of the cerebral lobes. These lobes are not anatomically separated from one another by any barriers, but are physically continuous with each other, or interconnected via neural pathways in order to work together to process and synthesize information. Each lobe of the cerebrum exhibits characteristic surface features that each have their own functions. The cerebral cortex is divided into six lobes: the frontal, temporal, parietal, occipital, insular and limbic lobes. The lobes of the cerebrum are actually divisions of the cerebral cortex based on the locations of the major gyri and sulci. The cerebral cortex is a highly convoluted gray matter structure consisting of many gyri and sulci. Although the cerebrum appears to be a uniform structure, it can actually be broken down into separate regions based on their embryological origins, structure and function.Įach hemisphere of the cerebrum is composed of the cerebral cortex and various structures that lie beneath it, also called subcortical structures. The cerebrum is the largest part of the brain, and is divided into a left and right hemisphere. The brain is composed of the cerebrum, cerebellum and brainstem. It is the most complex organ of the body, with many layers and components that play their roles in almost every function performed by the body. The brain, along with the spinal cord, is the main organ of the central nervous system. ![]()
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