how: measures brain activity through electrical charges detected by electrodes on the scalp

function: often used to diagnose epilepsy and sleep disorders

advantages:

• cheap

• non-invasive- anyone can do this

disadvantages:

• very basic

how: a series of X-ray images taken from different angles around a body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues inside the body

function: most often used to search for brain damage (car crash, concussion intenral injuries/bleeding, tumors, etc.)

advantages:

• cheaper than MRIs

• fast

disadvantages:

• does not give a clear image

how: produces detailed images of brain structures using electromagnetic signals in response to magnetic fields

advantages:

• best of the best

disadvantages:

• muy expensive

• invasive- not everyone can use it (claustrophobic, overweight, not for babies, etc.)

how: maps brain activity by measuring changes in blood flow and oxygen levels using multiple MRIs bacl to back to back to back;

advantages:

• best of both worlds because brain imaging + brain activity

disadvantages:

• muy muy muy expensive

• muy muy muy invasive

how: uses radioactive drug (tracer) to show both normal and abnormal metabolic activity

• fluorodeoxyglucose: a radioactive form of glucose commonly used as a tracer in PET scans

• provides color-coded images of brain activity by tracking a radioactively tagged compound

function: can be used to detect different types of cancers, cardiovascular diseases, and neurological disorders

advantages:

• show how well certain parts of your body are working

disadvantages:

• invasive

• radiation exposure

• allergic reactions

• lower resolution

lesioning = a medical procedure that involves creating lesions in the body, such as in the brain or nerves, to study how the body functions

1. cut out parts of the brain because somebody has problems

2. voluntarily harming a person; we do it