Our Divided Brains
• Corpus collosum – large
bundle of neural fibers
(myelinated axons, or white
matter) connecting the two
LEFT HANDED CLASS IDEAS
**33 million people are left handed
**25% more likely to have accidents, 51% if working with machinery
**What could be done in the classroom that would make it easier for
students who are left handed to take notes or tests.
**What about the mouse on computers? The mouse is actually made for
people who are right handed. How adaptable must a left handed person
become in order not to be frustrated by using a right handed mouse?
**Pick a partner
**Take turns asking/recording answers
**What are the results?
The Limbic System
• Hypothalamus, pituitary, am
ygdala, and hippocampus all
deal with basic
drives, emotions, and
• Hippocampus Memory
• Amygdala Aggression
(fight) and fear (flight)
Hunger, thirst, body
regulates pituitary gland
The Cerebral Cortex
• Frontal (Forehead to top) Motor Cortex
• Parietal (Top to rear) Sensory Cortex
• Occipital (Back) Visual Cortex
• Temporal (Above ears) Auditory Cortex
The Cerebral Cortex
impairment of language, usually caused by left hemisphere damage
either to Broca’s area (impairing speaking) or to Wernicke’s area
an area of the left frontal lobe that directs the muscle movements
involved in speech
an area of the left temporal lobe involved in language comprehension
• Broca Expression
The Frontal Lobe of the brain is located
deep to the Frontal Bone of the skull
Phineas Gage was a railroad worker in the 19th century living in
Cavendish, Vermont. One of his jobs was to set off explosive
charges in large rock in order to break them into smaller pieces. On
one of these instances, the detonation occurred prior to his
expectations, resulting in a 42 inch long, 1.2 inch wide, metal rod to
be blown right up through his skull and out the top. The rod
entered his skull below his left cheek bone and exited after passing
through the anterior frontal lobe of his brain.
Remarkably, Gage never lost consciousness, or quickly regained it
(there is still some debate), suffered little to no pain, and was awake
and alert when he reached a doctor approximately 45 minutes later.
He had a normal pulse and normal vision, and following a short
period of rest, returned to work several days later. However, he was
not unaffected by this accident.
**Have you ever had or do you know someone who has had a
**What kind of physiological or cognitive effects occurred?
**What brain areas can you think of that are affected when a
football player falls and hits the back of their head?
Senses and integrated senses
Spatial awareness and
The Parietal Lobe of the brain
is located deep to the Parietal
Bone of the skull.
Its primary function is the
processing, integration, interpretati
on, etc. of VISION and visual
The Occipital Lobe of the Brain is
located deep to the Occipital Bone of
The Temporal Lobes are located on
the sides of the brain, deep to the
Temporal Bones of the skull.
• The ability of the brain to reorganize neural
pathways based on new experiences
• Persistent functional changes in the brain
represent new knowledge
• Brain injuries
• Over Chapters
One, Two and
• Bring scantron
882-E & #2 pencil
• Unit One Exam on
• Multiple Choice &
• 50 questions