Chapter 6: From Olfaction to Cognition

• Introduction
• The major brain structures
• Striatum 
• involved with movement
• Stimulating the striatum can cause jerky, twitching movements.
• Prof. Delgado and the bulls
• Amygdala
• Controls the hypothalamus
• Hypothalamus links the neural system to the endocrine system.
• Involved in primitive emotion
• "Terminal Man" anecdote
• Hippocampus
• Memory
• Henry anecdote
• Receiving desk anecdote for memory
  
• Thalamo-cortical loops
• Frontal cortex and the thalmus
• Dorso-medial nucleus (DMN)
• Planning and outcomes
• All the systems act in concert
• From Cortext to behavior
• One sensation can trigger multiple thalamo-coritcal messages
• example: smell something
• thalamo-cortical loop
• what is it that you smelled (food)
• what could happen as a result of smelling (eating)
• olfactory cortex/amygdala - hunger
• cortex/hippocampus
• recognize the setting
• combine with stimuli and past outcomes
• Arrive at a predicted outcome to a course of action
• Neocortex
• Early mammals depended on smell and hearing
• Visual systems lagged behind
• Most brain expansion was dominated by random access/associative structures rather than point to point.
• Traditional view is the reverse: expansion was in point to point systems and then the associative areas formed later.