prefrontal lobe definition
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prefrontal cortex Medical Definition of PREFRONTAL CORTEX. : the gray matter of the anterior part of the frontal lobe that is highly developed in humans and plays a role in the regulation of complex cognitive, emotional, and behavioral functioning.ADVERTISEMENT.noun. the gray matter of the anterior part of the frontal lobe that is highly developed in humans and plays a role in the regulation of complex cognitive, emotional, and behavioral functioning.
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What Are the Functions of the Prefrontal Cortex? Primary functions of the prefrontal cortex involve planning a person's response to complex and difficult problems. The prefrontal cortex resides at the front of the brain, and it is subdivided by the brain's right and left hemispheres.
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area postcentral area (postrolandic area) an area just posterior to the central sulcus of the cerebral hemisphere that is the primary receiving area for general sensations. precentral area primary somatomotor area. premotor area an area of the motor cortex of the frontal lobe immediately in front of the precentral gyrus.iesselbach's area an area on the anterior part of the nasal septum, richly supplied with capillaries, and a common site of epistaxis (nosebleed). language area any nerve center of the cerebral cortex, usually in the dominant hemisphere, controlling the understanding or use of language.
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What Is The Prefrontal Cortex? To define the prefrontal cortex as the projection zone of the mediodorsal nucleus of the thalamus builds on the work of Rose and Woolsey who showed that this nucleus projects to anterior and ventral parts of the brain in nonprimates.he dorsal prefrontal cortex is especially interconnected with brain regions involved with attention, cognition and action, while the ventral prefrontal cortex interconnects with brain regions involved with emotion.
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lobe parietal lobe the upper central portion of the gray matter of each cerebral hemisphere, between the frontal lobe and the occipital lobe and above the temporal lobe. It is the receptive area for fine sensory stimuli, and the highest integration and coordination of sensory information is carried on here.
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Occipital lobe Thus, the occipital lobe is defined as the part of the cerebral cortex that lies underneath the occipital bone. (See the human brain article for more information.). The lobes rest on the tentorium cerebelli, a process of dura mater that separates the cerebrum from the cerebellum.
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- The frontal cortex is a part of the brain that maintains very close ties with the limbic system. Yet the frontal cortex remains relatively calm during REM sleep. The prefrontal cortex, which is part of the frontal cortex, is heavily involved in thought and judgment when we are awake.
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What is the Occipital Lobe? The occipital lobe is located behind the parietal lobe, and it sits on top of the membrane that separates it from the cerebellum, which is below it. As mentioned, its function tends to be most associated with vision.
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The Cerebrum The parietal lobe is a part of the brain positioned above (superior to) the occipital lobe and behind (posterior to) the frontal lobe. The parietal lobe integrates sensory information from different modalities, particularly spatial sense and navigation.
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Prefrontal Cortex The Prefrontal Cortex is that part of the brain located behind our forehead that is responsible for the executive function, meaning that it acts like a conductor communicating, guiding, and coordinating the functions of the different parts of the brain.he Prefrontal Cortex is that part of the brain located behind our forehead that is responsible for the executive function, meaning that it acts like a conductor communicating, guiding, and coordinating the functions of the different parts of the brain.
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OCCIPITAL LOBE Noun. 1. occipital lobe-that part of the cerebral cortex in either hemisphere of the brain lying in the back of the head. occipital cortex. calcarine fissure, calcarine sulcus-a sulcus in the mesial surface of the occipital lobe of the cerebrum.
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- Parietal Lobe-located behind the frontal cortex (and central sulcus); involved in perception of stimuli related to touch, pressure, temperature, and pain.
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- The prefrontal cortex is the most anterior part of the frontal lobe of the brain and is involved in critical thinking and judgment, as well as any behavior that depends on context and requires decision making.
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Occipital lobe The name derives from the overlying occipital bone, which is named from the Latin ob, behind, and caput, the head. Bilateral lesions of the occipital lobe can lead to cortical blindness (See Anton's syndrome).one of the cortical lobes are defined by any internal structural features, but rather by the bones of the head bone that overlie them. Thus, the occipital lobe is defined as the part of the cerebral cortex that lies underneath the occipital bone.
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lobe prefrontal lobe. the part of the brain rostral to the ascending convolution. quadrate lobe. 1. precuneus. 2. a small lobe of the liver, between the gallbladder on the right, and the left lobe. spigelian lobe caudate l. of liver. temporal lobe the lower lateral lobe of the cerebral hemisphere.
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Occipital lobe Occipital lobe. The occipital lobe is located at the rear portion of the skull, behind the parietal and temporal lobes. One of the most important parts of this lobe is the primary visual cortex, a region of the brain that receives input from the retina of the eye.he occipital lobe is located at the rear portion of the skull, behind the parietal and temporal lobes.
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- Home › Definition-Occipital Lobe ›. Occipital Lobe-the posterior lobe of the brain; involved with vision (the occipital cortex is also referred to as the visual cortex).Your name: *.ome › Definition-Occipital Lobe ›. Occipital Lobe-the posterior lobe of the brain; involved with vision (the occipital cortex is also referred to as the visual cortex).
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Physiological Psych 2200 They are positioned at the frontmost region of the cerebral cortex and are involved in movement, decision-making, problem solving, and planning. There are three main divisions of the frontal lobes. They are the prefrontal cortex, the premotor area and the motor area.The prefrontal cortex is responsible for personality expression and the planning of complex cognitive behaviors. The premotor and motor areas of the frontal lobes contain nerves that control the execution of voluntary muscle movement.Function:hey are positioned at the frontmost region of the cerebral cortex and are involved in movement, decision-making, problem solving, and planning. There are three main divisions of the frontal lobes. They are the prefrontal cortex, the premotor area and the motor area.
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frontal lobe Medical Definition of frontal lobe. : the anterior division of each cerebral hemisphere having its lower part in the anterior fossa of the skull and bordered behind by the central sulcus.
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- precentral gyrus-the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area.central gyrus-either of two gyri on either side of the central sulcus.recentral gyrus-the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area.
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Occipital lobe The occipital lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The occipital lobe is the visual processing center of the mammalian brain containing most of the anatomical region of the visual cortex.The primary visual cortex is Brodmann area 17, commonly called V1 (visual one). significant functional aspect of the occipital lobe is that it contains the primary visual cortex. Retinal sensors convey stimuli through the optic tracts to the lateral geniculate bodies, where optic radiations continue to the visual cortex.
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- In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe.The PFC contains Brodmann areas 9, 10, 11, 12, 46, and 47. third definition of the prefrontal cortex is the area of frontal cortex whose electrical stimulation does not lead to observable movements. For example, in 1890 David Ferrier used the term in this sense.
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Occipital Lobe Occipital Lobe. The occipital lobe is located in the posterior part of the cerebral hemispheres: • posterior to the temporal lobe and parietal lobe. • the occipital lobe is partially separated from the parietal lobe by the parietooccipital fissure. • In addition, there is only virtual separation between the temporal lobe and occipital lobe.
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cerebral cortex occipital cortex, occipital lobe-that part of the cerebral cortex in either hemisphere of the brain lying in the back of the head. temporal ccortex, temporal lobe-that part of the cerebral cortex in either hemisphere of the brain lying inside the temples of the head.
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- Definition of OCCIPITAL LOBE. : the posterior lobe of each cerebral hemisphere that bears the visual cortex and has the form of a 3-sided pyramid. ADVERTISEMENT.olfactory lobe, parietal lobe. the posterior lobe of each cerebral hemisphere that bears the visual cortex and has the form of a 3-sided pyramid.