(Lesson 9 2013) split brain studies

Nothing
on
your
left!
Damage
to
the
right!

From
last
lesson….

Question
1

Charlotte
is
diagnosed
with
Broca’s
aphasia.

a.  Where
is
Broca’s
area
located?
(1
mark)

b.  Describe
two
ways
in
which
her
speech
could
be

impaired.
(2
marks)

Charlotte
is
diagnosed
with
Broca’s
aphasia.

a.
Where
is
Broca’s
area
located?
(1
mark)

Frontal
lobe
in
the
left
hemisphere.

Both
pieces
of
information
were
required.
Students
did
not
need
to
state
that
this
is

so
more
than
95
per
cent
of
the
time.

b.
Describe
two
ways
in
which
her
speech
could
be
impaired.
(2
marks)

Any
two
of:

•
produces
very
little
speech

•
speech
requires
much
concentration
and
effort

•
difficulty
articulating
speech
(pronouncing
words)

•
speech
tends
to
be
slow
and
drawn
out

•
short
words
–
prepositions/conjunctions
tend
to
be
omitted

•
sentences
tend
to
be
very
short
(up
to
four
words)

•
sentences
tend
to
be
made
up
of
verbs
and
nouns
only

•
words
lack
grammatical
endings
(for
example,
–ing).

A
common
error
was
to
list
two
descriptors
of
the
same
difficulty;
for
example,

speech
is
slurred
and
poorly
articulated;
or
words
are
shortened
and
words
lack

grammatical
endings.
Such
responses
received
only
one
mark.

This
lesson…..

  Describe
split-‐brain
studies
including
the
work
of
Roger

Sperry
and
Michael
Gazzaniga

  Describe
spatial
neglect
caused
by
stroke
or
brain

injury

  Explain
the
contribution
of
split-‐brain
studies
to
our

understanding
cognitive
processes

Neglect
syndrome

  Damage
to
the
right
parietal
lobe

  Results
in
the
patient
completely
ignoring
the
left
side

of
their
world,
even
the
left
side
of
their
body.

  Patients
eat
only
the
food
on
the
right
side
of
their

plate,
shave
the
right
side
of
their
face,
wash
the
right

side
of
their
body
etc.

  A
problem
of
attention,
not
blindness!

What
do
you
mean
there’s

something
wrong
with
my

face?

Sounds
cool
until
your
brain
is
cut
in
half

Corpus
Callosum

The
corpus
callosum
forms
a
bridge
that

connects
the
left
and
right
hemispheres.

The
corpus
callosum
enables
communication

between
the
two
hemisperes

Split
Brain
Surgery

  Severing
the
Corpus

Callosum

  Used
to
treat
severe
epilepsy

  Disables
communication

between
the
left
and
right

hemispheres

  Information
from
left
visual
ﬁeld
is

processed
in
the
right
hemisphere

  Information
from
the
right
visual

ﬁeld
is
processed
in
the
left

hemisphere

Split
Brain
Test

  Object
presented
to
left

visual
ﬁeld
(processed
in

right
hemisphere)

  Cannot
name
object

  Can
pick
correct
object
up

  Object
presented
to
right

visual
ﬁeld
(processed
in
left

hemisphere)

  Can
name
object

  Conclusion
–
language

processing
occurs
on
LEFT

(Lesson 9 2013) split brain studies

(Lesson 9 2013) split brain studies

More Related Content

What's hot

Viewers also liked

Similar to (Lesson 9 2013) split brain studies

More from Crystal Delosa

Recently uploaded

(Lesson 9 2013) split brain studies