Lecture 26: Limbic and Olfactory Systems

Question 1

How is the limbic system currently thought of?

Answer 1

Feeling and reacting brain between the thinking brain and the output mechanisms of the nervous system

Question 2

What happens when cortex, white matter, and basal gangial are cut off from the rest of the brain?

Answer 2

Organism becomes enraged, but when the hypothalamus was also separated the rage disappeared

Question 3

Papez Circuit

Answer 3

1. Outside input to neocortex
2. Cingulate cortex (feelings)
3. Hippocampus
4. Hypothalamus via fornix (emotional expression here)
5. Anterior nucleus of thalamus via mammilothalamic tract
6. Back to cingulate cortex
7. Feedback to neocortex, how emotions influence thinking