what I've drawn for you here is the
human brain and this is what you would
see if you were looking at someone and
they were standing in profile or if they
were standing sideways in front of you
so this would be the front of their head
so their eyes and their nose and mouth
would be located down here this would be
the back of their head and this would be
the top and then down here would be the
bottom and we refer to this area this
big one right here which is the first
thing that you would see if you were
just looking at the outer portion of the
brain we call this the cerebral cortex
and you might notice something about the
cerebral cortex right away which is that
it looks kind of wrinkly and it actually
is rather than having a smooth surface
it actually has a ton of bumps and folds
and this is actually extremely useful
because it allows the cerebral cortex to
have greater surface area it allows it
to have room for more neurons it gives
it an increased cellular mass we usually
split the cerebral cortex up into four
different hemispheres the first is the
frontal lobe which I'm shading in blue
right here the next area is the parietal
lobe which is back here towards the top
and the back end we also have the
occipital lobe which I'm going to color
in pink and then finally we have the
temporal lobe which I'll draw in violet
right here the frontal lobe is comprised
of two main regions those include the
motor strip or the motor cortex as well
as the prefrontal cortex the motor
cortex or the motor strip is responsible
for our body movements in fact if you
could feel back someone's skull and
electrically stimulate different areas
of the motor cortex you could make
someone's hand twitch or their leg move
just by stimulating that area on their
brain the frontal lobe also contains the
prefrontal cortex and this is the part
of the brain that's responsible for we
refer to as executive functions things
like thinking and problem-solving all
take place in the prefrontal cortex not
only that but it also helps to supervise
and direct all of the other areas of our
brain another part of the frontal lobe
that's worth mentioning is referred to
as Broca's area and this is a part of
the brain that's
associated with speech production let's
move on to this yellowish orange portion
here which we said was the parietal lobe
and this part of the cerebral cortex is
also important for a number of different
tasks one important part of the parietal
lobe is the somatosensory cortex and
this is the part of your brain that's
associated with feeling and by then I
don't mean emotional feeling what I
actually mean is that this part of the
brain receives information from all over
your body about touch and pressure and
temperature and pain so the motor cortex
would help us reach forward and grab a
cup of coffee but the somatosensory
cortex is what would allow us to feel
the pressure of that coffee cup or tell
us how hot it is and you might be
thinking to yourself that these two
things seem like they're intimately
related and they are in fact even though
we say that they're in different lobes
of the brain they're actually right next
to each other so this side of the brain
to this side of the crevice within the
frontal lobe is the motor cortex and
right next to it in the parietal portion
towards the back is the somatosensory
cortex and together they can be thought
about as the sensory motor cortex our
parietal lobe is also responsible for
spatial processing or spatial
manipulation and by that I mean that it
helps you orient yourself in
three-dimensional space but this part of
the brain doesn't only help us
understand where we are in space but it
helps us to understand the space around
us more generally for example if I
wanted to reach out and grab a cup of
coffee that's in front of me I could use
the my prefrontal cortex to plan
movement and my motor cortex to complete
that movement but I also need my primal
cortex to tell me where that coffee cup
is in front of me and without that I
wouldn't actually be able to reach out
and pick it up other things like knowing
how to navigate around your house or
your town that's also what we mean we
talked about spatial manipulation or
spatial processing our occipital lobe
which is in the back of our brain is
responsible for things related to vision
we may see with our eyes that are in the
front of our head but after collecting
that information from the world around
us that information actually gets
transported all the way to the back of
our brain for processing so let's put
vision right here another term that you
might hear in association with the
occipital lobe is the term striate
cortex and this simply refers to the
fact that if you looked at the occipital
lobe under the microscope if you looked
at those cells that they would appear
striped or striated the last lobe of the
brain is the temporal cortex and that's
in violent and this is the part of your
brain that's responsible for auditory
processing as was the case with vision
in our occipital lobe information comes
in through our ears but it is processed
in our brain in our temporal cortex
another important area in the temporal
cortex is what's referred to as
Wernicke's area and when we talked about
the frontal cortex we talked about
Broca's area which we said was
responsible for speech production
well Wernicke's area is responsible for
language reception and language
comprehension before I end this video I
just want to take a moment to point out
that the different lobes of the brain do
a lot more than just the things that
I've listed here however in general
these are the things that you should
think about whenever you think about the
different lobes of the brain