1. The Nervous System 2 Major Divisions: Central and Peripheral

2. Central Nervous System  Made up of the brain and spinal cord  Interprets info from senses and relays commands back to sense organs, muscles, and organs

3. BRAIN  100 billion neurons  Hindbrain: contains medulla (vital and sensory info), pons (vital and sensory + jaw movement), and cerebellum (motor coordination, memory, balance)  Midbrain: contains reticular formation (arousal, sleep/wake, etc)

5. BRAIN  Forebrain: contains hypothalamus (controls pituitary, feeding, aggression, sex drive, pleasure), thalamus (sensation, movement, emotions, sleep/wake), limbic system (emotions, learning, memory)

6. Brain—Cerebrum  Cerebral Cortex: covering of the cerebrum  75% of the brain’s neurons  Responsible for higher mental functions: reasoning, art, calculations, expression, language

7. Hemispheres  The cerebrum is divided into hemispheres that are connected by the CORPUS CALLOSUM  Each hemisphere is divided into 4 lobes

8. Lobes  Frontal: movement, speech, cognitive processes  Temporal: Hearing, language comprehension, emotions  Parietal: Skin sensations, visual/spatial  Occipital: Vision, visual memory

9. Hemispheric specialization  Each hemisphere functions differently and controls different things  LEFT: Language, speech, verbal memory, calculation, writing, right side movement  RIGHT: Visual/spatial, shape/face recognition, emotions, art visual imagery, left side movement

10. Left/Right Brain  Left/Right Brain video Left/Right Brain  Left/Right Brain demonstration Left/Right Brain