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Lecture

PSYB65 - Lecture 01 - Sep 13, 2010


Department
Psychology
Course Code
PSYB65H3
Professor
Ted Petit

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Midterm + Final
Cumulative on lecture notes
2nd half of the book (new chapters)
General brain structures
The nerves system (slide 1 + 2)
-CNS brain and spinal cord
-PNS all the other nerves
(Slide 4 when you take the human brain out)
-Cortex, Cerebellum
-Human brains, in some sets, are similar to the brains in dogs and rats, in terms of
organization.
Slide 5
-The brain divides into 3 parts; Forebrain, Midbrain, Hindbrain
-Hindbrain brain stamp
Area of the base of the brain (at the back of the brain)
Major areas: Cerebellum and Medulla
Cerebellum sensory motor integration (take sensory input and put together
with motor output)
Allows humans to stand from one leg
Ability to balance, walking appropriately
When damaged, looks like someone who is drunk
Medulla responsible for basic life processes (Heart rate, respiration)
Keep humans alive at the most basic level
Not a place where you want to have a stroke or tumor
Critical life processes carrying on in the Medulla
-Midbrain reticular formation (involves in sleep-wakefullness cycle)
It wakes us up, and puts us back to sleep
When damaged, humans will go into a coma (someone who sleeps the whole
time and the brain wouldnt be able to wake you up)
-Forebrain numbers of critical things that go on here, and they go into different
types of subcategories
Major area: Thalamus and hypothalamus
Thalamus major relay center (to convey and relay information)
Particularly in humans and higher mammals
Relay information to the appropriate cortex
They might not have cortex, so the thalamus might just do some system
analysis
Hypothalamus (anything hyper, feels good part of the brain)
Controls and refers to life functions (thirst, hunger, territoriality, sexual
behaviours, drugs)
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