PSYB65H3 Lecture Notes - Lecture 1: Cerebral Cortex, Reticular Formation, Brainstem
Document Summary
Pns -> everything else (nerves going to rest of the body) Very little difference between brain + spinal cord. Broken down into 3 major basic components. Back of the brain = most primitive -> as you move forward, it gets more evolved (complex) Hindbrain = medulla (most basic life processes, heartbeat + respiration; worst place to have a stroke) + cerebellum (sensory motor coordination, takes sensory information and used to coordinate the body like balance) Brain stem = basic core of the brain, general + primitive. Anterior = front; posterior = back; lateral = side. When people get drunk, it affects their cerebellum (groggy movements) Cerebellum -> looks like a cauliflower, protrudes out at the back of your brain. Midbrain = primary responsibility -> reticular formation responsible for sleep-wakefulness functions/circadian rhythms damage to the reticular formation = coma; sleep-wakefulness process is gone. How did the brain get there through evolution (phylogenetic development)
