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10 Cards in this Set

  • Front
  • Back
early homo sapiens
.3 mya
flake tool makers
Brain~ 1300 cc
paleomammalian brains add
emotion, attachment, learning
maclean triune brain model
neomammalian
paleomammalian
reptilian
The Reptilian (Lizard) Brain
This brain can:
Hunt, eat, drink
Fight & defend territory
Have sex
Build & defend nests
brain circuit
1. The brain has (somewhat) separate streams of action, thought, and emotion

2. Circuits are always active, and mental states are due to the changing balance of activity

3. Functions are explained by circuits, not by centers
amgdala
Adults who were inhibited in childhood show more amygdala activity in response to novel faces
phineas gage/ prefrontal cortex
Gage’s brain damage was largely restricted to the orbitofrontal cortex, especially on the left
This left-leaning bias helps explain his emotional outbursts, not present in all such patients
Skin Conductance: Responses to Disturbing Scenes
Normal subjects
-jagged waves

Orbitofrontal damage
-almost linear
Descartes’ Errors
1. Mind substance is distinct from body substance
Really: Mind is instantiated in brain, which is body substance
2. Reason is most pure and at its best when totally free of emotion
Really: Reason only functions in the presence of emotion
3. “I think, therefore I am”
Really: I think because I feel what I am
In other words, mind is embodied
Take-Home Lessons
Experience changes the brain
Limbic system evolution enhances learning
Human brains are not just larger, they are different
Association cortex expands most
Patterns of learning and teaching change
Old structures stay embedded in new ones, and connected with them
Feelings are necessary for rational thought