PSYB65 – Lecture 1
➢ Basic Overview of the Human Brain
Nervous System: Central and Peripheral Nervous System
Central Nervous System: Brain & Spinal Cord
• Spinal Cord is continuous with ther brain: hard to distinguish between the two.
• Spinal cord continues into the base of the brain
• Forebrain, Midbrain, and Hindbrain
• Anterior: Forward in the brain
• Posterior: Toward the back
• Thalamus: Relay Centre for info coming in from spinal cord. Forwards
info to frontal part of the brain
• Hypothalamus: Controls life processes in a more complex way. Keeps
species alive over a long period of time – eating behaviour, drinking,
(hunger and thirst are motivating behaviours) territoriality, sex,
reproductive behaviours. 4 F's (feeding, fighting, finding, fucking)
• Limbic System
• tightly interconnected structures involved in emotion
• Cerebral Cortex: most anterior structure in the brain. New cortex.
Massive that it seems like most of the human brain but in fact it's only a
portion. So it's the largest, complex, most evolved part of the human
brain. Gives us intellectual reasoning and ability to store information
• Reticular Formation: Controls Sleep-Wakefulness cycles/Circadian
Rhythms. Damage to this area results in a coma.
• Cerebellum: Sensory-motor integration – receives sensory info and then
sends out a message to move muscles/limbs).Damage to this area may
prevent one from standing upright. Sits on top of the brain-stem.