Now what are some the other
senses that come to forefront?
Again, we have a lot of different
senses and we highlighted the usual,
the usual suspects, but there are a couple
that I wanted to highlight as well.
One is kinesthetic sense
This is you being
aware of yourself.
Now how do I know right now that I’m
actually standing this way versus this way?
Or how do you know that
when you’re leaning your
arm against on a counter
that is actually there?
So that self-report of being
aware of where you are or what
you’re doing or what you’re
touching is called proprioception.
You can have a muscle
spindle, which is a
mechanoreceptor found in
certain muscle stretch.
as you stretch a muscle, you
need that information to
be sent back, saying, “This
muscle is being stretched.”
So there are a lot of feedback
senses that are happening.
You can have Golgi tendon organs which
monitor tension and certain tendons.
You can have joint capsule
receptors which detect
pressure tension and
movement in the joints.
And you can have the proprioception
which I mentioned already.
So all of these are providing a lot of
feedback towards movement, stance and muscle.
All really, really
important as well.
And a lot of these used to go sort
of undetected or unannounced,
not by your body
but by yourself.
Cognitively speaking, you’re
not aware of the fact that
you’re aware that you are
standing in a certain fashion.
We’re also going to look at something
called your vestibular sense.
This is a really neat thing.
Again, you very rarely
think about this,
but this is your sense of balance
and spatial orientation,
and this helps with coordinating
your movement and balance.
And the only time you’re
actually aware of that,
you have these vestibular
senses when things go awry
when you lose your balance, so
you get really, really dizzy.
That’s when you’re like,
“Okay, something’s wrong.”
So things like, you know,
literally, dizziness or vertigo
are linked to some issues
with your vestibular sense.
So what this does is it coordinates
the cochlea, which is found
in your ear to determine rotational
and translational movement.
So I think we all understand what rotational
means, that would be movement like this
and translational would be
movement along an access this way,
so forward to back, rock, a
rocking motion this way.
So the two components are usually
letting to do different structures.
So the semicircular
canal system is what
mediates and manages the
And the two structures in specific that we
are talking are the utricle and saccule.
And you can see them
here in the diagram.
So what they do is they know how you’re
moving this way, your rotational movement.
Now if you go on a ride, you know, at the
local carnival that spins you around,
that movement tells you that you’re
upside-down or that you’re sitting
backwards, and it moves as you
move because it’s fluid-filled.
The otoliths indicate
So same thing, think of a
long -- the analogy I like
to use is the long tube
partly filled with water,
and as you move that forward and move it
back and stop and go and stop and go,
that liquid is going to move this
way and you get that wave action.
And so that wave action allows you
to indicate linear accelerations.
So all this information is gathered and
is sent to the cerebellum for processing.
That allows you to get that
3D orientation of where am
I in the rotational space
and where am I in the
So you’re getting all
of this information.
So collectively, we term
that the vestibular sense.
So we’ve walked through a whole
bunch of senses quite quickly, but
I hope you appreciate the fact
that we do a have a lot of senses.
We do interact with
All that information gets processed up in
the central nervous system at different
brain regions and allows us to process,
interpret, and respond to that information.