A.P. Psychology 3-B (E) - Right

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Unit 3-B (E):
Right-Left Differences
in the Brain
Mr. McCormick
A.P. Psychology
Do-Now
(Discussion)
 What
is it mean to be a “right-brain”
vs. “left-brain” dominant person?
 What
does this suggest about the
workings of the brain?
The Brain’s Plasticity

Plasticity:


The brain’s ability to change, especially during
childhood, by reorganizing after damage or by
building new pathways based on experience
Neurogenesis:

The formation of new neurons
The Brain’s Plasticity
 When
 What
is the brain “most plastic?”
are some ways that the
brain’s plasticity can benefit people
with limited senses (e.g. blind or
deaf people)?
The Divided Brain

Lateralization:
The brain’s left and right hemispheres serve different
physiological and cognitive functions
 Most apparent after brain damage
 Left hemisphere: dominant/major
 Right hemisphere: subordinate/minor

The Divided Brain
Why do you think a
higher percentage
(90%) of people are
right-handed?
The Divided Brain

Corpus Callosum:

The large band of neural fibers connecting the two
brain hemispheres and carrying messages between
them
The Divided Brain

Split Brain:

A condition resulting from surgery that isolates the
brain’s two hemispheres by cutting the fibers (mainly
those of the corpus callosum)
Visual Perception of the Split Brain
Testing the Divided Brain
Testing the Divided Brain
The Divided Brain
 What
is Split Brain?
What
are the causes of this
condition?
What
are the effects of this
condition?
Which One is Happier?
Right-Left Differences
in the Intact Brain

Left Brain:








Logical
Sequential
Rational
Analytical
Objective
Looks at parts
Right portion of body
Academic Strengths:


Language (Written/Spoken)
Science & Math

Right Brain:








Random
Intuitive
Holistic
Synthesizing
Subjective (Emotion)
Looks at wholes
Left portion of body
Academic Strengths:


Art & Music
Creativity
Right-Left Differences
in the Intact Brain

Identify the brain hemisphere that is most associated with each of the
following abilities, tasks, and characteristics:

Problem-solving

Artistic Design

Imagination

Construction

Emotion

Practicality

“Masculinity”

“Femininity”
Review

What is plasticity of the brain?



When is the brain typically “most plastic?”
What is a split brain patient?

What are the causes of this condition?

What are the effects of this condition?
Differentiate between the abilities and characteristics
of the brain’s left and right hemispheres.
Homework

Unit 3-B Quiz: “The Brain”

Chapter 4 Outline: “Nature, Nurture, and
Human Diversity”

Unit 3 Project: “3-D Brain Model”
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