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Across 1. found in abundance in fruits and vegetables 3. this type of neuroimaging provides an indication of brain activity 5. carries signals to next neuron 6. this approach compares brain functioning of healthy people with those having disorders 9. structural neuroimaging provides detailed images of these features 11. the covering of axons that protects and speeds up signals 15. chemicals that cross the synapse from one neuron to the next 19. refers to functions of the prefrontal and frontal cortex such planning and attention 20. brain cells 21. ____ effect refers to the fact that older adults are motivated to find meaning 22. this system sometimes called the primitive brain is located in the middle of the brain and includes the amygdala and hippocampus 23. neurons covered by myelin that communicate in the brain 24. the "little brain", controls balance and movements, some procedural memories 25. the gap between neurons

Down 2. this approach measures relationship between performance and brain structure 3. molecules that can damage cells including brain cells 4. pictures of the brain are taken in various ways 5. this imaging approach links brain activity with cognitive behavior 7. a bundle of neurons that connects the two hemispheres of the brain 8. these changes allow oder adults to adapt to inevitable decline 10. structure associated with formation of new memories 12. receive signals from other neurons 13. chemical associated with moods, memory, appetite and sleep 14. neurotransmitter whose role includes attention, memory, and movement 15. study of the brain 16. this cortex is the outer covering of the brain, the "wrinkles" 17. these are structures inside the axon that carry info to the terminal branches of the axon 18. a chemical associated with intentional movement, pleasure and rewards, and higher levels of cognitive functioning