Functional Brain Areas – Brain Anatomy Cortex

Functional Brain Areas – Brain Anatomy Cortex


Hello, my name is Fahrice and this is
animated anatomy. In my previous video I have talked to you about the blood
supply certain brain areas, the brain has areas that are specific for certain
functions. In my upcoming videos i will explain these areas, I will talk about
the cerebrum or the cortex, then i will explain the limbic system and the
cerebellum as well as the brainstem. There are really interesting things here,
for example: if there is a stroke in original association cortex of the brain
a patient knows that a car has four doors at four wheels. He knows that a car has windows and can
have different colors. Then we show him the car and he can even see the car
perfectly. However, he will not be able to recognize
that it is a car you can, for example, show this patient a key he will not be
able to recognize that the object he’s looking at is a key he will grab the key
in his hand and only then he will realize that he was looking at a key. This condition is called visual agnosia.
Now let’s explain these areas, let’s explain this condition in details. In this lesson I will talk about the
areas of the cortex, of course there are 52 areas supporting to the Broadmann’s
map of the brain cortex, however, I don’t think your teacher or professor will not ask you to know all of them, we will just go through some areas of the brain to have
a great functional significance and we will not discuss all 52 areas of
Brodmans map of cortex. Ok we have the primary sensible cortex here on the post
central gyrus, ok, and this cortex here is important for receiving the signal from
receptors over the body. On the medial side of the brain you can still notice
the part of the cortex here. Ok, then we have the primary motor cortex
and it’s in the precentral gyrus here. And you can notice the same functional
area here for me outside the right. The reason why this is called the past
central and this is precentral is because of the central sulcus here, this
is the central sulcus, ok, and the gyrus here is called the postcentral gyrus and here’s the precentral gyrus. Then right here we have the secondary
motor cortex is this cortex is important for writing, playing piano and in such
more complicated movements there are associated with learning through time
and while growing up. The one truly important part of that cortex is here on
this ascending part of the lateral sulcus here. And this part is important for speech
movements if if there’s a stroke or this part of the brain is damaged the patient
will be available to understand what is being told him that he won’t be able to
pronounce the words to articulate words to make sentences and because he won’t
be able to coordinate his mouth movement the tongue movement. Ok and here we have the calcarine
fissure and the cortex around it is the primary visual cortex. It is the cortex
around the calcarine
fissure is important for receiving the signal from
your eyes, however the area that is important for
perception and understanding what is seen and remembering what was seen
before. It is not the primary visual cortex it
is a bit more further from the calcarine
fissure and it is marked as an
area 18 by Broadmann. Now if your primary cortex works fine you will be able to
receive signal from your eyes through the optic tract the nerve, but if your
secondary visual cortex doesn’t work it won’t be able to understand what you see
you won’t be able to understand what is in front of you until you touch
it and its really interesting patients with such problems are not
able to recognize for example a mobile phone for example if they’re looking at
it and however if they take the phone immediately they know what it is ok so this part of the cortex is
important for receiving the auditory signal it is not important for
perception of the signal but just receiving the signal itself. Ok in this gyrus here is called the supramarginal gyrus, and this area is
important for understanding the speech. So here you receive the signal auditory
signal in this area understand that this speech. If there’s a stroke in this part
of the brain or this part of the brain is damaged, patient will be able to
receive the signal in this part of the brain but he won’t be able to understand
what is being told him. Then here we have the angular gyrus, this area is
important for reading words. It’s called the visual speech center. This part is damaged not only affect the
ability to read but it also affects the ability to write and both these last two
parts are usually located in the dominated part of the hemisphere, the
speech recognition area and the visual speech center. they’re both located
usually in the dominant hemisphere of the brain. There are also areas for tertiary motor
functions and sensible centers and very complicated processes like logic
thinking, playing, you know being talented for something whether it’s math or I
don’t know and these areas are hard to
differentiate because they really depend on the individuality of each person
so some person might have parts really really developed, for example,
someone as talented for math or playing piano and so on and in coordinating music with
the speech. It is really it’s really hard to find these areas because some persons
do not have it developed, some have and so on. Now we understand the areas which deal
with speech vision movement and so on. But how about the things that we cannot
see, but we still feel that. Emotions, emotions have their place in our brains
as well they don’t have place in our hearts and that place in our brain is
called the limbic system to watch that video click here, to watch my previous
video click here. If you like my videos and want to purchase my software you can go to my website animatedanatomy.com If you don’t have money to purchase my software, then at least
you can subscribe here for more new content that I release regularly. Thank you.

7 Replies to “Functional Brain Areas – Brain Anatomy Cortex”

  1. ✅ https://www.AnimatedAnatomy.com/ ✅ ◄◄◄ This is my website… You can buy all my lessons here.

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