1. Understanding the Brain
The Brain Song

2. The Brain Q & A T/F- People use only 10% of their brain.
T/F- People with larger brains are more intelligence.
T/F- The brain gets better with use.

3. The Nervous System Autonomic Somatic (involuntary) (voluntary)
Central Nervous System & Peripheral Nervous System
(brain & spinal cord) (nerves, organs, muscles)
Autonomic Somatic
(involuntary) (voluntary)
Sympathetic Parasympathetic
(arouses body) (calms body)

6. Ways to Measure the Brain
EEG
CAT (CT) Scan
MRI Scan
PET Scan

7. Electroencephalograph (EEG)
Monitors the electrical activity of the brain- brain waves
Used in clinical diagnosis of various neurological disorders

8. Brain Imaging- CAT Scan
X-ray beam moves all around the patient, scanning from hundreds of different angles.
Portrays only brain structure.
Used to diagnose a wide variety of ailments (head trauma, cancer, tumors).

9. Brain Imaging- PET Scan
examine brain function
monitor chemical processes such as neurotransmitters
Person receives an injection of radioactive substance

10. Brain Imaging- MRI
Similar to CAT scan but better picture due to higher resolution
Uses radio waves to capture picture of the brain
The energy released by different structures generates an image on a computer screen.

11. MRI Machine

12. 3 Main Regions of the Brain

13. Three Main Regions of the Brain
Hindbrain- lower part of brain stem
1. cerebellum
2. pons
3. medulla

14. Three Main Regions of the Brain
Midbrain- upper brainstem (reticular formation)

15. Three Main Regions of the Brain
Forebrain- largest & most complex
limbic system (4. Thalamus, 5. Hypothalamus, 6.Amygdala, 7. Hippocampus) at the center
cerebral cortex & lobes can be seen externally

16. Cerebral Cortex - layer of cells covering the surface of the brain.
It’s divided into 4 Lobes

17. Frontal Lobe Prefrontal Cortex
Personality- how we behave in social settings, impulse control
Plans & decision making
Motor cortex- controls all voluntary movements

18. Phineas Gage example of prefrontal cortex damage

19. Phineas Gage- example of prefrontal cortex damage

20. Parietal Lobe- Process info from body parts
Somatosensory Cortex- sense of touch
Sense of touch, feeling temperature & pain
Phantom Limb syndrome

22. Temporal Lobe
Involves hearing, speaking, understanding written & verbal words

23. Occipital Lobe
Processes visual information
Blind sight