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Wednesday, October 5

  1. page Brain- The Cerebral Cortex edited ... Deals with language comprehension {wernickes_area.jpg} Wernicke's Area The Cerbral Cortex i…
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    Deals with language comprehension
    {wernickes_area.jpg} Wernicke's Area
    The Cerbral Cortex is composed of six layers. Listed from most superior to most inferior, these layers are;
    molecular layer, -the most superior layer of the cortex. It contains the cell bodies of neuroglial cells.
    external granular layer -very dense and contains small granular cells and small pyramidal cells
    medial pyramidal layer- contains pyramidal cells arranged in row formation. The cell bodies of some association fibers are found here.
    internal granular layer -thin, but its cell structure is the same as that of the external granular layer.
    the ganglionic layer- contains small granular cells, large pyramidal cells as well as the cell bodies of some association fibers. The association fibers that originate here form two large tracts: The Bands of Baillarger and Kaes Bechterew.
    fusiform or multiform layer- function is unknown.
    Brodmann's Classification System
    {Brod2.jpg}
    Studies done by Brodmann in the early part of the twentieth century generated a map of the cortex covering the lobes of each hemisphere. These studies involved electrical probing of the cortices of epileptic patients during surgery. Brodmann numbered the areas that he studied in each lobe and recorded the psychological and behavioral events that accompanied their stimulation.

    
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    7:26 am
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  3. page Brain-Corpus Callosum edited Jaurdyn Corpus Callosum - a thick band of nerve fibers that divides the cerebrum into left and …
    Jaurdyn
    Corpus Callosum - a thick band of nerve fibers that divides the cerebrum into left and right hemispheres. It connects the left and right sides of the brain allowing for communication between both hemispheres. The corpus callosum transfers motor, sensory, and cognitive information between the brain hemispheres.
    Basically- Your brain is divided right down the middle into a right hemisphere and a left hemisphere. These hemispheres are able to communicate through a band of nerve fibers which is the corpus callosum.
    Functions
    Communication Between Brain Hemispheres
    Eye Movement
    Maintaining the Balance of Arousal and Attention
    Tactile Localization
    Location
    Underneath the cerebrum at the center of the brain
    {corpus-callosum.jpg}
    Right and Left Hemispheres
    
    The right side of the brain controls muscles on the left side of the body and the left side of the brain controls muscles on the right side of the {right_and_left.gif} body
    Dominant functions- Each of the hemispheres of the brain are responsible for different functions, the corpus callosum is what links these together in order for proper functioning
    Left Hemisphere
    Right Hemisphere
    Language
    Spacial abilities
    Math
    Face recognition
    Logic
    Visual imagry
    {right_and.gif}

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    7:18 am
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    7:17 am

Tuesday, October 4

  1. page Lobes-Parietal edited ... {http://www.neuroskills.com/images/parietal.jpg} Location and Functions View Parietal lob…
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    {http://www.neuroskills.com/images/parietal.jpg}
    Location and Functions
    View Parietal lobe and over 3,000,000 other topics on Qwiki.
    The parietal lobes are located behind the frontal lobe at the top of the brain.
    Main functions of the parietal lobes include sensation, perception, spatial orientation, integrating sensory input and speech.
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    Damage to the Parietal Lobes
    Damage to the right parietal lobe can cause visuo-spatial deficits like a person having a hard time finding their way around new or familiar places.
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    right parietal lobelobe.
    View Dyscalculia and over 3,000,000 other topics on Qwiki.

    Damage to the right parietal lobe can result in neglecting part of the body or space (contralateral neglect), which can impair many self-care skills such as dressing and washing. Right side damage can also cause difficulty in making things (constructional apraxia), denial of deficits (anosagnosia) and drawing ability.
    Damage to the left parietal lobe can cause a person to lose their ability to understand language (spoken or written).
    Damage to the left parietal lobe can also result in what is called "Gerstmann's Syndrome." It includes right-left confusion, difficulty with writing (agraphia) and difficulty with mathematics (acalculia). It can also produce disorders of language (aphasia) and the inability to perceive objects normally (agnosia).
    View Gerstmann syndrome and over 3,000,000 other topics on Qwiki.
    References
    http://biology.about.com/library/organs/brain/blparietallobe.htm
    (view changes)
    9:15 pm
  2. page Lobes-Parietal edited ... Main functions of the parietal lobes include sensation, perception, spatial orientation, integ…
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    Main functions of the parietal lobes include sensation, perception, spatial orientation, integrating sensory input and speech.
    Some of the sensations picked up by the parietal lobes are touch and pressure while some of the fine sensations picked up by the parietal lobes are judgement of texture, weight, size and shape.
    Damage to the Parietal Lobes
    Damage to the right parietal lobe can cause visuo-spatial deficits like a person having a hard time finding their way around new or familiar places.
    Dyscalculia, which is a difficulty with mathematics, can also be associated with damage to the right parietal lobe
    Damage to the right parietal lobe can result in neglecting part of the body or space (contralateral neglect), which can impair many self-care skills such as dressing and washing. Right side damage can also cause difficulty in making things (constructional apraxia), denial of deficits (anosagnosia) and drawing ability.
    Damage to the left parietal lobe can cause a person to lose their ability to understand language (spoken or written).
    Damage to the left parietal lobe can also result in what is called "Gerstmann's Syndrome." It includes right-left confusion, difficulty with writing (agraphia) and difficulty with mathematics (acalculia). It can also produce disorders of language (aphasia) and the inability to perceive objects normally (agnosia).
    References

    http://biology.about.com/library/organs/brain/blparietallobe.htm
    http://www.waiting.com/brainanatomy.html#anchor2703258
    http://www.neuroskills.com/tbi/bparieta.shtml
    http://www.sciencedaily.com/releases/2007/03/070322132931.htm
    http://www.neuroskills.com/images/parietal.jpg

    (view changes)
    9:04 pm
  3. page Lobes-Parietal edited ... {http://www.neuroskills.com/images/parietal.jpg} Location and Functions The parietal lobe…
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    {http://www.neuroskills.com/images/parietal.jpg}
    Location and Functions
    The parietal lobes are located behind the frontal lobe at the top of the brain.
    Main functions of the parietal lobes include sensation, perception, spatial orientation, integrating sensory input and speech.
    Some of the sensations picked up by the parietal lobes are touch and pressure while some of the fine sensations picked up by the parietal lobes are judgement of texture, weight, size and shape.
    http://biology.about.com/library/organs/brain/blparietallobe.htm

    (view changes)
    8:48 pm

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