The function of this paper is to review, in an unbiased way of brain imaging technologies in investigating the relationship between biology and behaviour.
Brain imaging technologies, with their advantages and disadvantages:
PET scan/Positron Emission Tomography scan
What it is:
A PET scan, or Positron Emission Tomography scan is a scan that detects positrons that are emitted from radioactive materials, and is used to scan bodies containing a radioactive tracer/radiotracer/radiopharmaceutical/radionuclide is either inhaled, injected, or ingested into the body. Brighter spots appear where the concentration of radioactive tracer has …show more content…
The patient may feel discomfort from enduring long periods of time without movement.
A radioactive substance is entered into the body of the patient, which may have harmful side effects, especially if the patient is sensitive to radiation, pregnant, or breastfeeding.
PET scans are very sensitive to picking up any abnormalities such as diabetes, or any other bodily chemical imbalance, which may lead to false diagnoses.
As the patient’s body is exposed to radioactive substances during a PET scan, it can only be done a limited number of times on one patient.
PET scans are very expensive.
Patients may feel claustrophobic, and uncomfortable.
PET scanning equipment is not readily available, and is difficult to find, as the equipment includes a cyclotron, a machine that creates radioisotopes, which is difficult to obtain.
Low resolution, as it can only go down to 5 - 10 cubic millimeters
Case study: Dehaene et al(1996)
Aim: To investigate the areas of cerebral blood flow/most active brain sites during number comparison and multiplication.
Method: The eight participants were divided into three