(m)
The Cerebrum: The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. The cerebral cortex is divided into four sections, called "lobes": the frontal lobe, parietal lobe, occipital lobe, and temporal lobe. Here is a visual representation of the cortex
What do each of these lobes do?
Frontal Lobe- associated with reasoning, planning, parts of speech, movement, emotions, and problem solving
Parietal Lobe- associated with movement, orientation, recognition, perception of stimuli
Occipital Lobe- associated with visual processing
Temporal Lobe- associated with perception and recognition of auditory stimuli, memory, and speech
Note that the cerebral cortex is highly wrinkled. Essentially this makes the brain more efficient, because it can increase the surface area of the brain and the amount of neurons within it. We will discuss the relevance of the degree of cortical folding (or gyrencephalization) later. (Go here for more information about cortical folding)
A deep furrow divides the cerebrum into two halves, known as the left and right hemispheres. The two hemispheres look mostly symmetrical yet it has been shown that each side functions slightly different than the other. Sometimes the right hemisphere is associated with creativity and the left hemispheres is associated with logic abilities. The corpus callosum is a bundle of axons which connects these two hemispheres.
Nerve cells make up the gray surface of the cerebrum which is a little thicker than your thumb. White nerve fibers underneath carry signals between the nerve cells and other parts of the brain and body.
The neocortex occupies the bulk of the cerebrum. This is a six-layered structure of the cerebral cortex which is only found in mammals. It is thought that the neocortex is a recently evolved structure, and is associated with "higher" information processing by more fully evolved animals (such as humans, primates, dolphins, etc).
2007-03-18 21:02:20
·
answer #1
·
answered by mallimalar_2000 7
·
3⤊
0⤋
Function Of The Cerebrum
2016-09-30 08:14:22
·
answer #2
·
answered by graybill 4
·
0⤊
0⤋
Definition Of Cerebrum
2016-12-11 12:56:01
·
answer #3
·
answered by Anonymous
·
0⤊
0⤋
This Site Might Help You.
RE:
describe the funtions of cerebrum?
2015-08-07 00:39:35
·
answer #4
·
answered by Anonymous
·
0⤊
0⤋
cerebrum = telencephalon
this is basically for language and communication
movement, olfaction, emotion and memory
basically everything
Language and communication
Main article: Language
Speech and language are mainly attributed to parts of the cerebral cortex, which is one portion of the telencephalon. Motor portions of language are attributed to Broca's area within the frontal lobe. Speech comprehension is attributed to Wernicke's area, at the temporal-parietal lobe junction. These two regions are interconnected by a large white matter tract, the arcuate fasciculus. Damage to the Broca's area results in expressive aphasia (non-fluent aphasia) while damage to Wernicke's area results in receptive aphasia (also called fluent aphasia)
Movement
The telencephalon attributes motor function to the body. These functions originate within the primary motor cortex and other frontal lobe motor area. In many cases when this part of the brain is damaged, the brain is unable to send signals to nerves that innervate muscles motoneurons, and can lead to diseases such as Motor Neurone Disease. This kind of damage results in loss of muscular power and precision rather than total paralysis, because there are other, older portions of the brain that also subserve motor function.
Olfaction
Main article: Olfaction
The olfactory bulb is on the underside of the anterior-most portion of the brain. This is a rather large portion of the telencephalon in most mammals. However, in humans, this part of the brain is relatively smaller. Damage to the olfactory bulb results in a loss of the sense of smell.
Memory
Main article: Memory
Memory formation is associated with the hippocampus. This association was originally described after a patient (HM) had both his hippocampuses (left and right) surgically removed to treat severe epilepsy. After surgery, HM had anterograde amnesia, or the inability to form new memories. This problem is also addressed slightly in the film Memento, in which the protagonist has to take pictures of people he has met in order to be able to remember what to do in the days following his accident; so, in that respect, the film is factually accurate.
Emotion
Main article: Emotion
Emotional functions are attributed to a wide network of telencephalic and other regions grouped together as the limbic system. The amygdala is a nucleus that contributes a great deal to the emotion of fear. This region is part of the Papez circuit, which is the anatomical loop between various brain regions responsible for cortical control of information.
for more information , the website is below
2007-03-18 20:03:15
·
answer #5
·
answered by psygenes 2
·
1⤊
0⤋
The largest portion of the brain, divided into two hemispheres that each contain four lobes. Its functions include speech, memory, vision, personality and muscle control in certain parts of the body.
www.cnn.com/HEALTH/library/BN/00023.html
Initiation and coordination of all voluntary movement take place within the cerebrum.
The large, upper part of the brain, which acts as a master control system and is responsible for initiating thought and motor activity.
2007-03-18 20:05:16
·
answer #6
·
answered by deano 2
·
0⤊
0⤋
The functions of cerebrums are two fold. First the cranium is allowed to dispose of the vesdawyt, which in turn allows the flow of the recycables to the septum, thus producing a varient of the mononuclei to the cerebrum!
2007-03-19 13:27:38
·
answer #7
·
answered by Anonymous
·
0⤊
0⤋
The cerebral cortex is a structure within the vertebrate brain with distinct structural and functional properties. In non-living, preserved brains, the outermost layers of the cerebrum has a grey color, hence the name "grey matter". Grey matter is formed by neurons and their unmyelinated fibers while the white matter below the grey matter of the cortex is formed predominantly by myelinated axons interconnecting different regions of the central nervous system. The human cerebral cortex is 2-4 mm (0.08-0.16 inches) thick and plays a central role in many complex brain functions including memory, attention, perceptual awareness, "thinking", language and consciousness.
The surface of the cerebral cortex is folded in large mammals where more than two thirds of the cortical surface is buried in the grooves, called "sulci". The phylogenetically more ancient part of the cerebral cortex, the hippocampus, is differentiated in five layers of neurons, while the more recent neo-cortex is differentiated in six basic layers. Relative variations in thickness or cell type (among other parametres) allows us to distinguish among different neocortical architectonic fields. The geometry of these fields seems to be related to the anatomy of the cortical folds and, for example, layers in the upper part of the cortical grooves (called gyri) are more clearly differentiated than in its deeper parts
Function:
Determines Intelligence
Personality
Interpretation of Sensory Impulses
Motor Function
Planning and Organization
Touch Sensation
Location:
The cerebrum is located in the anterior portion of the forebrain. It is divided into two hemispheres that are connected by the corpus callosum.
1. Cerebrellum: This part sits atop the spinal column and controls vital functions of the body. It is also responsible for movements learned through repitition.
2. Cerebrum: This part of the brain does several very complex tasks such as holding memories, allowing one to recongnize things, and enabling a person to imagine and think.
3. Frontal Lobes: This part of the brain is located directly behind the forehead and acts as a short term memory storage. It is responsible for scheduling, planning, reasoning, and imagining.
4. Motor Area: This part of the brain helps to control voluntary movements.
5. Broca's Area: This part of the brain allows thoughts to be transformed into words.
6. Parietal Lobes: Control taste, scent, and the texture of food.
7. Sensory Areas: Recieve information about temperature, taste, touch, and movement. Sensory Areas are also responsible for functioning reading and arithmetic
8. Optical Lobes: Used to process images from the eyes and also link information with images in memory.
9. Temporal Lobes: These respond to stimuli such as music, recieve information from the ears, and play a crucial role in forming memories. They also integrate memories and sensations of taste, sound, sight, and touch.
2007-03-18 20:58:34
·
answer #8
·
answered by Rajkiya 2
·
1⤊
0⤋
CEREBRUM:- The main part of our Brain. The main centre of
which have two sensory areas where impulse(information)
is recieves from sense organs(receptors).
It is complex and specialised part of the Brain.
2007-03-21 02:25:35
·
answer #9
·
answered by Anonymous
·
0⤊
0⤋
The telencephalon (IPA: /tɛlɛnˈsɛfəlɑn/) is the name for a large region within the brain that is attributed many functions. Many people refer to it as the cerebrum; however, it is technically referred to as the telencephalon.
As a more technical definition, the telencephalon refers to the cerebral hemispheres and other, smaller structures within the brain, although the telencephalon is one of the larger divisions (in terms of number). It is the anterior-most embryological division of the brain that develops from the prosencephalon.
Structure
The telencephalon is composed of the following sub-regions;
1.Limbic system
2.Cerebral cortex or cortices of the cerebral hemispheres.
3.Basal ganglia
4.Olfactory bulb
Composition
The telencephalon comprises what most people think of as the "brain." It lies on top of the brainstem and is the largest and most well-developed of the five major divisions of the brain. The telencephalon is the newest structure in the phylogenetic sense, with mammals having the largest and most well-developed among all species. It emerges from the prosencephalon, the first of three vesicles that form from the embryonic neural tube.
The traditional division first sectioned the telencephalon into four parts. More recent research describes further sub-divisions.
In humans, the telencephalon surrounds older parts of the brain. Limbic, olfactory, and motor systems project fibers from subcortical (deeper) areas of the cerebrum to parts of the brainstem. Cognitive and volitive systems project fibers from cortical areas of the cerebrum to thalamus and to other regions of the brainstem. The neural networks of the telencephalon facilitate complex learned behaviors, such as language.
The cerebrum is the largest part of the brain, and contains white matter and grey matter. Grey matter is highly folded; with respect to function, this is thought to allow a greater number of cells in the same volume due to the increase in its surface area. The telencephalon includes regions of archipalliar, paleopalliar, and neopalliar origin. Profound development of the neopallium, which comprises the cerebral cortex, is unique among humans and Old World monkeys.
Functions
As the telencephalon is a gross division with many subdivisions and sub-regions, it is important to state that this section lists the functions that the telencephalon as a whole serves.
Language
Speech and language are mainly attributed to parts of the cerebral cortex, which is one portion of the telencephalon. Motor portions of language are attributed to Broca's area within the frontal lobe. Speech comprehension is attributed to Wernicke's area, at the temporal-parietal lobe junction. These two regions are interconnected by a large white matter tract, the arcuate fasciculus. Damage to the Broca's area results in expressive aphasia (non-fluent aphasia) while damage to Wernicke's area results in receptive aphasia (also called fluent aphasia)
Movement
The telencephalon attributes motor function to the body. These functions originate within the primary motor cortex and other frontal lobe motor area. In many cases when this part of the brain is damaged, the brain is unable to send signals to nerves that innervate muscles motoneurons, and can lead to diseases such as Motor Neurone Disease. This kind of damage results in loss of muscular power and precision rather than total paralysis, because there are other, older portions of the brain that also subserve motor function.
Olfaction
The olfactory bulb is on the underside of the anterior-most portion of the brain. This is a rather large portion of the telencephalon in most mammals. However, in humans, this part of the brain is relatively smaller. Damage to the olfactory bulb results in a loss of the sense of smell.
Memory
Memory formation is associated with the hippocampus. This association was originally described after a patient (HM) had both his hippocampuses (left and right) surgically removed to treat severe epilepsy. After surgery, HM had anterograde amnesia, or the inability to form new memories. This problem is also addressed slightly in the film Memento, in which the protagonist has to take pictures of people he has met in order to be able to remember what to do in the days following his accident; so, in that respect, the film is factually accurate.
Emotion
Emotional functions are attributed to a wide network of telencephalic and other regions grouped together as the limbic system. The amygdala is a nucleus that contributes a great deal to the emotion of fear. This region is part of the Papez circuit, which is the anatomical loop between various brain regions responsible for cortical control of information.
2007-03-18 20:29:45
·
answer #10
·
answered by Sarah Koshy 2
·
0⤊
0⤋