1. The Brain

2. Accidents Phineas Gage Story Personality changed after the accident.
What does this tell us?
How can biology effect a persons behavior?
Choose #25

4. Electroencephalogram
EEG
Detects brain waves through their electrical output.
Used mainly in sleep research.

5. Computerized Axial Tomography
CAT Scan
CAT(3 Words)
3D X-Ray of the brain.
Good for tumor locating, but tells us nothing about function.

6. Magnetic Resonance Imaging
MRI
More detailed picture of brain using a magnetic field to knock electrons off axis.
Takes many still pictures and turns images into a movie like production.
Let’s play MRI game:
g/educational/medicine/ mri/game/index.html

7. Positron Emission Tomography
PET Scan
Measures how much of a chemical the brain is using (usually glucose consumption).

8. Cerebral Cortex (part or forebrain)
Brain Structures:
Hindbrain
Midbrain
Forebrain
Cerebral Cortex (part or forebrain)

9. Brain Structures: Hindbrain: Medulla Oblongata
Located just above the spinal cord.
Involved in control of
blood pressure
heart rate
breathing.

10. Brain Structures: Hindbrain: Cerebellum
Controls our balance and fine movement skills

11. Brain Structures: Midbrain
Coordinates simple movements with sensory information.
Most important structure in Midbrain is the Reticular Formation: controls arousal and ability to focus our attention.

12. Brain Structures: Forebrain
What makes us human.
Largest part of the brain.
Made up of the Thalamus, Limbic System and Cerebral Cortex.

13. Brain Structures: Forebrain Thalamus
Receives sensory signals from the spinal cord and sends them to other parts of the forebrain.

14. Brain Structures: Forebrain Hypothalamas
Maybe most important structure in the brain.
Controls and regulates
Body temperature
Sexual Arousal
Hunger
Thirst
Endocrine System
#24

15. Brain Structures: Forebrain Hippocampus
Involved in the processing and storage of memories.

16. Brain Structures: Forebrain Amygldala
More involved in volatile emotions like anger.

17. Brain Structures: The Cerebral Cortex
Made up of densely packed neurons we call “gray matter”
Glial Cells: support brain cells.
Wrinkles are called fissures.
If you lay brain out it would be as big as a large Pizza pizza.

18. The Cerebral Cortex is made up of four Lobes.

19. Frontal Lobe
Abstract thought and emotional control.

20. Frontal Lobe The Broca and Wernick
Wernick-Decodes speech
Broca-Commands speech

21. Temporal Lobe
Process sound sensed by our ears.

22. Parietal Lobe
Contain Sensory Cortex: receives incoming touch sensations from rest of the body.

23. Occipital Lobe Deals with vision.
Contains Visual Cortex: interprets messages from our eyes into images we can understand.

24. Hemispheres Left Right
logic
sequential tasks.
spatial
creative tasks.
Left
Right

25. The Corpus Callosum Connects the 2 hemispheres.
What happens if two hemispheres are split?

26. The Man with 2 Brains