The past twenty years have seen advancements intechnology that were critical to further understanding concepts incognitive psychology. Two such developments are positron emissiontomography (PET) and magnetic resonance imaging (MRI) scans. These scansallow researchers to “see” the brain in action.

Research how brain scans can diagnose injury and diseaseusing the Internet..Based on your research, answer the following questions:

• How do PET and MRI work?
• If you were showing a person words while having an MRI, what brain areas would probably be active?
• If a brain injury victim is unable to move the right arm, in whicharea of the brain would an MRI scan most likely reveal damage?
• What kind of scan do you think would be best in diagnosing Alzheimer’s disease?
• How do the research tools (equipment and methodology) availabletoday contribute to a greater understanding of “conscious processes andimmediate experience” than was possible using trained introspection andstructuralism?

PETs and MRIs also can diagnose head injuries. Consider the following scenario:

You are working at a Veterans Affairs (VA) hospital andmeet with Allison. Allison is in the US Army and has just returned homefrom a deployment. During her deployment, a bomb was thrown into avehicle in which she was riding. She was not severely injured but wastold that she sustained a mild traumatic brain injury (TBI).

Respond to the following:

• Define TBI for Allison.
• Describe any symptoms that Allison might experience.
• How do you think the army should deal with these injuries? Forexample, if Allison is not obviously physically impaired, should she bedischarged and receive disability pay? Should she be redeployed? IfAllison stays in the army, what kinds of jobs do you think she shouldnot perform?

Write your initial response in 4–5 paragraphs. Apply APA standards to citation of sources.