we’re gonna have little activity in this
presentation so you’re gonna have to
bear with me so the first thing I’m
gonna ask you to do is if you are
right-handed would you please stand up
okay take a look around okay now if
you’d be seated if you are left-handed
would you please stand up okay take a
look around now you may be seated
over here you probably recognize this
these are the tools of my torture in
primary and secondary school so I am
left-handed I freely admit that so I’d
come into a classroom sit down at my
right hand a desk open my right handed
binder proceeded to take notes with a
pen a ballpoint pen and a little known
fact you probably weren’t aware of the
fact that pens were designed to be
pulled and not pushed and then anyone
who’s left-handed which it appears may
be two of us one of the things you
recognize is the ink you would you were
writing with or the led if you had a
pencil ends up on the bottom of your
hand and finally there’s this torture
device
scissors the bane of my kindergarten
existence they would end up upside down
and stuck on my thumb almost cost me
another year in kindergarten so my topic
this evening my topic this evening is
laterality sightedness we tend to think
of ourselves as left or right-handed by
virtue of which hand we eat with or
which hand we write with however what
you’re going to discover this evening is
it’s well it’s far more complicated to
than that and in point of fact we do a
number of behaviors in which we favor
the left side or the right side
so through this talk today we’ll
discover how left or right handed you
truly are to do that there are a couple
topics I need to touch upon one very
briefly is how our brain is organized
secondly I’m going to talk about
cultures view of right and left-handed
people and finally I’m going to talk
about lateral
and we’re gonna do some more exercises
and discover how right or left lateral
eyes you truly are as you probably know
we have two hemispheres of the brain a
left hemisphere and a right hemisphere
and those two hemispheres are connected
by a band of nerds referred to as the
corpus callosum the function of those
nerves is really a neural pathway for
the two hemispheres to talk to one
another for there to be communication to
go back back and forth our left
hemisphere it is primarily our logical
hemisphere it is a hemisphere that we’re
math is contained analytical skills are
contained planning is contained and for
me as a communication professor or
verbal and written communication resides
it’s where digital communication is our
right hemisphere is our aesthetic
hemisphere our gestalt hemisphere it is
a hemisphere responsible for form using
for sound for rhythm for perceptions for
feelings for intuition it is again from
a communication perspective it’s our
nonverbal hemisphere it’s our analogic
hemisphere now it’s important to note
that our left hemisphere controls our
right side and our right hemisphere
controls our left side that the two
hemispheres are cross wired
now that information I gave you is kind
of a general conclusion in point of fact
both hemispheres had the capability of
the other just not nearly as refined and
developed further women tend to be less
hemispheric ly specialised than men
meaning they have more the capabilities
in both hemispheres and then there’s the
left-handed people such as me there they
come in a couple different flavors
either there are a mirror opposite of
right-handed people such that language
resides not in the left hemisphere but
in the right and nonverbal abilities was
ID not in the right hemisphere but in
the left or it could be diffused where
all those abilities are housed in both
hemispheres now I say this because in
part
the way our brain is organized kind of
gives a proclivity for us to be more
right-handed than left-handed some
people claim that the right hemisphere
is the more active or the left
hemisphere is the more active hemisphere
now let’s turn to culture and see what
culture says about right handedness and
left-handedness we can turn ative it to
religion first when when Jesus ascended
to heaven didn’t know what side of God
he sat on the right side and Satan the
fallen angel had previous previously
occupied the left side we can also look
to other religions Hindu Muslim Buddhist
the left hand is unclean but then we can
look at language and see how this plays
out on language anyone if anyone knows
French do you know what the the word for
left is in French right gauche which
when we use ghost here what that means
is tacky tasteless over-the-top it’s
certainly not a positive impression now
let’s see who went to Catholic school
and had to take Latin like myself anyone
know what the Latin word for left is
very good sinister again not a very good
label but we can also see it played out
in our common vernacular so you guys
have been breathing good now we’re gonna
find out my snowboarders we have here if
you most snowboarders will snowboard
with their left foot forward the right
foot back but if you’re turned around
which some are such that your left is
back and your front foot is your right
foot does anyone know what style that’s
called right that’s goofy style again
not snowboarder again not very not very
flattering now again this is kind of
like a sing-along you have to play along
with me here if you are skipped over if
you’re not included what are you you’re
left out if an idea comes from nowhere
you have no idea where that came from
comes from left field and if I am
correct I am I am right again we see
this kind of cultural influence that
certainly favors the right side
over the left side this now brings us to
laterality and more more calisthenics
for you in a few minutes
many of our behaviors are asymmetrical
that is to say that it calls from
actually on one side of the body as
opposed to the other side of the body so
for example waving shaking a fist
winking putting an eye on the telescope
crossing one leg over the other or all
lateralized behaviors once you perform
their activity on one side versus the
other and here’s one of the things I
find interesting about this from infancy
to about four four months or four years
we go back and forth so for example
sixteen weeks
children will infants will raise both
hands for contact at about twenty four
weeks they will raise the left hand for
contact and then again at twenty eight
weeks they’re back to two hands so
they’ll go back and forth left-right
both until about age four when they
begin to show a preference for the left
side or the right side and then by about
age eight is reified that is a or left
hand or the right handed now what’s so
fascinating to me about this is given
we’re going left right both you would
expect to be 50/50 but as you
demonstrated here and what we see in the
population about ninety percent of the
population is right-handed and only 10%
is left-handed so why well there are
couple explanations as I said before
some people will suggest because the
left hemisphere controlling your right
side is the more active hemisphere we
have a proclivity to a more
right-handedness we certainly cannot
ignore the role of culture in this we
see that there’s a cultural bias against
left-handed now this probably just
illustrates how old I am but in third
grade 1967 or 63 I had a teacher third
grade teacher who tied my left hand down
to on the desk so I couldn’t use it to
write because as she said or pointed out
to me it was the devil’s hand so she was
trying to force me to write with
my right hand needless to say there
weren’t a lot of apples on her desk but
and my parents were very pleased about
that
but it shows you how strong that bias
could be and that was only 1963 so we
see the influence of culture certainly
tools as I pointed out the deaths are
the scissors and almost any power tool I
should not get around because they’re
designed for right-handed people and we
also can ignore training I eat with my
left hand I write with my left hand I do
almost everything left-handed except for
sports which I do all right handed why
because my first coach my father was
right-handed and that’s how he taught me
so training plays a large role in it so
we can’t ignore them the role of the
brain of culture and training and taking
it to one side or the other so now it’s
that time to discover how lateralized
you really are so let’s start with this
I would ask you to wink you don’t know
how weird that look standing up here but
thank you very much okay so let’s show
hands how many people wink with their
right eye left eye both oh you’re
popular okay let’s let’s do what I call
the Dwayne Johnson the rock test raise
an eyebrow how many people can raise
your right eyebrow their left eyebrow
can you do both oh that’s that’s pretty
good I can’t do either I just look like
I I’m I’m surprised in a very painful a
now imagine I was talking very quietly
and you’re having difficulty hearing me
what ear would you cup and turn to hear
what I had to say all right another way
we can get at this is imagine your cell
phone take your cell phone out we don’t
have to do that now but what year would
you pick up two
should be the same one you returned we
can also get to it and still another way
and and this would be the opposite here
if you can imagine someone knocking on
the door softly or you hear a thug
against the wall or you hear a dripping
faucet which ear would you turn it
should be the opposite ear that you
would use for your phone because you’re
trying to identify an environmental
sound I have another test you know again
Oh what you’re using left or right
because these are lateralized behaviors
I’m going to ask you to count on your
hand so one two three four so do that
one two three four nope
know which finger you’re using to count
with and for me it’s my left which would
be consistent with everything I do one
two three four okay now we’re back to
aerobics I need you all it’ll stand up
okay we’re going to do a couple of
things here one as you may or may not be
aware that you are hipped now if we have
to wait in line for a long time one of
the things we will do is rest on a hip
so which hip you rest on now for me it’s
my right now if we had to wait long
enough we would shift over to the other
hip but we’d come back to this hip okay
now imagine you have an itch right it
dead center in the middle of your back
which hand would you put back to scratch
okay so just note that all right now a
magic clasp your hands and know which
hand is holding the other and for me
it’s my right hand is holding my hand
now if you don’t think you do these
behaviors consistently the same way
watch this okay take your hands full put
them together no twitch thumbs on top
okay now take them apart and put them
the other way with the other hand on top
did you have to watch yourself to it
okay watch this one cross your arms okay
know what your arms on top
okay now take take it apart and do it
the other way and you thought you were
left or right-handed this is what I mean
by lateralization you can be seated now
thank you very much you see you’ve seen
an object you see an object up there I
would ask you to point to that object
and keep your hand up there so so point
to that object okay
first note what hand you’re pointing
with and now close one on don’t move it
close one eye and then close the other
eye it should have dramatically moves
with one eye and not the other the eye
it doesn’t move with is your dominant
eye again a lateralized behavior now
when you came here this evening
you were left or right-handed so I
sincerely apologize for introducing yet
another gray area into your very complex
lives but I hope you’ve come away with
an appreciation that you’re not left or
right handed you are more or less left
or right latter eyes
now I have one more activity for you
that would typically deal with outer
eyes I’m going to ask you to clap your
hands really hard and note what’s on top
thank you very much
[Applause]
presentation so you’re gonna have to
bear with me so the first thing I’m
gonna ask you to do is if you are
right-handed would you please stand up
okay take a look around okay now if
you’d be seated if you are left-handed
would you please stand up okay take a
look around now you may be seated
over here you probably recognize this
these are the tools of my torture in
primary and secondary school so I am
left-handed I freely admit that so I’d
come into a classroom sit down at my
right hand a desk open my right handed
binder proceeded to take notes with a
pen a ballpoint pen and a little known
fact you probably weren’t aware of the
fact that pens were designed to be
pulled and not pushed and then anyone
who’s left-handed which it appears may
be two of us one of the things you
recognize is the ink you would you were
writing with or the led if you had a
pencil ends up on the bottom of your
hand and finally there’s this torture
device
scissors the bane of my kindergarten
existence they would end up upside down
and stuck on my thumb almost cost me
another year in kindergarten so my topic
this evening my topic this evening is
laterality sightedness we tend to think
of ourselves as left or right-handed by
virtue of which hand we eat with or
which hand we write with however what
you’re going to discover this evening is
it’s well it’s far more complicated to
than that and in point of fact we do a
number of behaviors in which we favor
the left side or the right side
so through this talk today we’ll
discover how left or right handed you
truly are to do that there are a couple
topics I need to touch upon one very
briefly is how our brain is organized
secondly I’m going to talk about
cultures view of right and left-handed
people and finally I’m going to talk
about lateral
and we’re gonna do some more exercises
and discover how right or left lateral
eyes you truly are as you probably know
we have two hemispheres of the brain a
left hemisphere and a right hemisphere
and those two hemispheres are connected
by a band of nerds referred to as the
corpus callosum the function of those
nerves is really a neural pathway for
the two hemispheres to talk to one
another for there to be communication to
go back back and forth our left
hemisphere it is primarily our logical
hemisphere it is a hemisphere that we’re
math is contained analytical skills are
contained planning is contained and for
me as a communication professor or
verbal and written communication resides
it’s where digital communication is our
right hemisphere is our aesthetic
hemisphere our gestalt hemisphere it is
a hemisphere responsible for form using
for sound for rhythm for perceptions for
feelings for intuition it is again from
a communication perspective it’s our
nonverbal hemisphere it’s our analogic
hemisphere now it’s important to note
that our left hemisphere controls our
right side and our right hemisphere
controls our left side that the two
hemispheres are cross wired
now that information I gave you is kind
of a general conclusion in point of fact
both hemispheres had the capability of
the other just not nearly as refined and
developed further women tend to be less
hemispheric ly specialised than men
meaning they have more the capabilities
in both hemispheres and then there’s the
left-handed people such as me there they
come in a couple different flavors
either there are a mirror opposite of
right-handed people such that language
resides not in the left hemisphere but
in the right and nonverbal abilities was
ID not in the right hemisphere but in
the left or it could be diffused where
all those abilities are housed in both
hemispheres now I say this because in
part
the way our brain is organized kind of
gives a proclivity for us to be more
right-handed than left-handed some
people claim that the right hemisphere
is the more active or the left
hemisphere is the more active hemisphere
now let’s turn to culture and see what
culture says about right handedness and
left-handedness we can turn ative it to
religion first when when Jesus ascended
to heaven didn’t know what side of God
he sat on the right side and Satan the
fallen angel had previous previously
occupied the left side we can also look
to other religions Hindu Muslim Buddhist
the left hand is unclean but then we can
look at language and see how this plays
out on language anyone if anyone knows
French do you know what the the word for
left is in French right gauche which
when we use ghost here what that means
is tacky tasteless over-the-top it’s
certainly not a positive impression now
let’s see who went to Catholic school
and had to take Latin like myself anyone
know what the Latin word for left is
very good sinister again not a very good
label but we can also see it played out
in our common vernacular so you guys
have been breathing good now we’re gonna
find out my snowboarders we have here if
you most snowboarders will snowboard
with their left foot forward the right
foot back but if you’re turned around
which some are such that your left is
back and your front foot is your right
foot does anyone know what style that’s
called right that’s goofy style again
not snowboarder again not very not very
flattering now again this is kind of
like a sing-along you have to play along
with me here if you are skipped over if
you’re not included what are you you’re
left out if an idea comes from nowhere
you have no idea where that came from
comes from left field and if I am
correct I am I am right again we see
this kind of cultural influence that
certainly favors the right side
over the left side this now brings us to
laterality and more more calisthenics
for you in a few minutes
many of our behaviors are asymmetrical
that is to say that it calls from
actually on one side of the body as
opposed to the other side of the body so
for example waving shaking a fist
winking putting an eye on the telescope
crossing one leg over the other or all
lateralized behaviors once you perform
their activity on one side versus the
other and here’s one of the things I
find interesting about this from infancy
to about four four months or four years
we go back and forth so for example
sixteen weeks
children will infants will raise both
hands for contact at about twenty four
weeks they will raise the left hand for
contact and then again at twenty eight
weeks they’re back to two hands so
they’ll go back and forth left-right
both until about age four when they
begin to show a preference for the left
side or the right side and then by about
age eight is reified that is a or left
hand or the right handed now what’s so
fascinating to me about this is given
we’re going left right both you would
expect to be 50/50 but as you
demonstrated here and what we see in the
population about ninety percent of the
population is right-handed and only 10%
is left-handed so why well there are
couple explanations as I said before
some people will suggest because the
left hemisphere controlling your right
side is the more active hemisphere we
have a proclivity to a more
right-handedness we certainly cannot
ignore the role of culture in this we
see that there’s a cultural bias against
left-handed now this probably just
illustrates how old I am but in third
grade 1967 or 63 I had a teacher third
grade teacher who tied my left hand down
to on the desk so I couldn’t use it to
write because as she said or pointed out
to me it was the devil’s hand so she was
trying to force me to write with
my right hand needless to say there
weren’t a lot of apples on her desk but
and my parents were very pleased about
that
but it shows you how strong that bias
could be and that was only 1963 so we
see the influence of culture certainly
tools as I pointed out the deaths are
the scissors and almost any power tool I
should not get around because they’re
designed for right-handed people and we
also can ignore training I eat with my
left hand I write with my left hand I do
almost everything left-handed except for
sports which I do all right handed why
because my first coach my father was
right-handed and that’s how he taught me
so training plays a large role in it so
we can’t ignore them the role of the
brain of culture and training and taking
it to one side or the other so now it’s
that time to discover how lateralized
you really are so let’s start with this
I would ask you to wink you don’t know
how weird that look standing up here but
thank you very much okay so let’s show
hands how many people wink with their
right eye left eye both oh you’re
popular okay let’s let’s do what I call
the Dwayne Johnson the rock test raise
an eyebrow how many people can raise
your right eyebrow their left eyebrow
can you do both oh that’s that’s pretty
good I can’t do either I just look like
I I’m I’m surprised in a very painful a
now imagine I was talking very quietly
and you’re having difficulty hearing me
what ear would you cup and turn to hear
what I had to say all right another way
we can get at this is imagine your cell
phone take your cell phone out we don’t
have to do that now but what year would
you pick up two
should be the same one you returned we
can also get to it and still another way
and and this would be the opposite here
if you can imagine someone knocking on
the door softly or you hear a thug
against the wall or you hear a dripping
faucet which ear would you turn it
should be the opposite ear that you
would use for your phone because you’re
trying to identify an environmental
sound I have another test you know again
Oh what you’re using left or right
because these are lateralized behaviors
I’m going to ask you to count on your
hand so one two three four so do that
one two three four nope
know which finger you’re using to count
with and for me it’s my left which would
be consistent with everything I do one
two three four okay now we’re back to
aerobics I need you all it’ll stand up
okay we’re going to do a couple of
things here one as you may or may not be
aware that you are hipped now if we have
to wait in line for a long time one of
the things we will do is rest on a hip
so which hip you rest on now for me it’s
my right now if we had to wait long
enough we would shift over to the other
hip but we’d come back to this hip okay
now imagine you have an itch right it
dead center in the middle of your back
which hand would you put back to scratch
okay so just note that all right now a
magic clasp your hands and know which
hand is holding the other and for me
it’s my right hand is holding my hand
now if you don’t think you do these
behaviors consistently the same way
watch this okay take your hands full put
them together no twitch thumbs on top
okay now take them apart and put them
the other way with the other hand on top
did you have to watch yourself to it
okay watch this one cross your arms okay
know what your arms on top
okay now take take it apart and do it
the other way and you thought you were
left or right-handed this is what I mean
by lateralization you can be seated now
thank you very much you see you’ve seen
an object you see an object up there I
would ask you to point to that object
and keep your hand up there so so point
to that object okay
first note what hand you’re pointing
with and now close one on don’t move it
close one eye and then close the other
eye it should have dramatically moves
with one eye and not the other the eye
it doesn’t move with is your dominant
eye again a lateralized behavior now
when you came here this evening
you were left or right-handed so I
sincerely apologize for introducing yet
another gray area into your very complex
lives but I hope you’ve come away with
an appreciation that you’re not left or
right handed you are more or less left
or right latter eyes
now I have one more activity for you
that would typically deal with outer
eyes I’m going to ask you to clap your
hands really hard and note what’s on top
thank you very much
[Applause]
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